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2015 Sierra Denali Owners Manual

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Sierra Denali 2015 gmc.com (U.S.) gmc.gm.ca (Canada) gmc.com.mx (Mexico)
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  • 2k15_gmc_sierra_denali_22993207A.ai

    (Modern Bridge - Level 2 / #23321109)

    Spine = Printer Adjust

    (Image set @ 60% Transparency

    Color = Black

    Date = 11/08/13

    Sierra Denali

    2015

    2015 S

    ierra

    Denali

    gmc.com (U.S.)gmc.gm.ca (Canada)gmc.com.mx (Mexico)

    22993207 A

  • Black plate (1,1)GMC Sierra Denali Owner Manual (GMNA Localizing-U.S/Canada/Mexico-7299750) - 2015 - crc - 6/9/14

    2015 GMC Sierra Denali Owner Manual M

    In Brief . . . . . . . . . . . . . . . . . . . . . . . . 1-1Instrument Panel . . . . . . . . . . . . . . 1-2Initial Drive Information . . . . . . . . 1-4Vehicle Features . . . . . . . . . . . . . 1-16Performance andMaintenance . . . . . . . . . . . . . . . . 1-20

    Keys, Doors, andWindows . . . . . . . . . . . . . . . . . . . . 2-1Keys and Locks . . . . . . . . . . . . . . . 2-1Doors . . . . . . . . . . . . . . . . . . . . . . . . . . 2-9Vehicle Security. . . . . . . . . . . . . . 2-10Exterior Mirrors . . . . . . . . . . . . . . . 2-13Interior Mirrors . . . . . . . . . . . . . . . . 2-17Windows . . . . . . . . . . . . . . . . . . . . . 2-17Roof . . . . . . . . . . . . . . . . . . . . . . . . . . 2-21

    Seats and Restraints . . . . . . . . . 3-1Head Restraints . . . . . . . . . . . . . . . 3-2Front Seats . . . . . . . . . . . . . . . . . . . . 3-3Rear Seats . . . . . . . . . . . . . . . . . . . . 3-8Safety Belts . . . . . . . . . . . . . . . . . . . . 3-9Airbag System . . . . . . . . . . . . . . . . 3-18Child Restraints . . . . . . . . . . . . . . 3-31

    Storage . . . . . . . . . . . . . . . . . . . . . . . 4-1Storage Compartments . . . . . . . . 4-1Additional Storage Features . . . 4-3

    Instruments and Controls . . . . 5-1Controls . . . . . . . . . . . . . . . . . . . . . . . 5-2Warning Lights, Gauges, andIndicators . . . . . . . . . . . . . . . . . . . . 5-8

    Information Displays . . . . . . . . . . 5-27Vehicle Messages . . . . . . . . . . . . 5-31Vehicle Personalization . . . . . . . 5-41Universal Remote System . . . . 5-48

    Lighting . . . . . . . . . . . . . . . . . . . . . . . 6-1Exterior Lighting . . . . . . . . . . . . . . . 6-1Interior Lighting . . . . . . . . . . . . . . . . 6-6Lighting Features . . . . . . . . . . . . . . 6-8

    Infotainment System . . . . . . . . . 7-1Introduction . . . . . . . . . . . . . . . . . . . . 7-1

    Climate Controls . . . . . . . . . . . . . 8-1Climate Control Systems . . . . . . 8-1Air Vents . . . . . . . . . . . . . . . . . . . . . . . 8-5Maintenance . . . . . . . . . . . . . . . . . . . 8-5

    Driving and Operating . . . . . . . . 9-1Driving Information . . . . . . . . . . . . . 9-2Starting and Operating . . . . . . . 9-23Engine Exhaust . . . . . . . . . . . . . . 9-32Automatic Transmission . . . . . . 9-33Drive Systems . . . . . . . . . . . . . . . . 9-38Brakes . . . . . . . . . . . . . . . . . . . . . . . 9-45Ride Control Systems . . . . . . . . 9-48Cruise Control . . . . . . . . . . . . . . . . 9-51Driver Assistance Systems . . . 9-54Fuel . . . . . . . . . . . . . . . . . . . . . . . . . . 9-62Trailer Towing . . . . . . . . . . . . . . . . 9-67Conversions and Add-Ons . . . 9-88

    Vehicle Care . . . . . . . . . . . . . . . . . 10-1General Information . . . . . . . . . . 10-2Vehicle Checks . . . . . . . . . . . . . . . 10-3Headlamp Aiming . . . . . . . . . . . 10-35Bulb Replacement . . . . . . . . . . 10-35Electrical System . . . . . . . . . . . . 10-38Wheels and Tires . . . . . . . . . . . 10-48

  • Black plate (2,1)GMC Sierra Denali Owner Manual (GMNA Localizing-U.S/Canada/Mexico-7299750) - 2015 - crc - 6/9/14

    2015 GMC Sierra Denali Owner Manual M

    Jump Starting . . . . . . . . . . . . . . . 10-84Towing the Vehicle . . . . . . . . . . 10-89Appearance Care . . . . . . . . . . . 10-94

    Service and Maintenance . . . 11-1General Information . . . . . . . . . . 11-1Maintenance Schedule . . . . . . . 11-3Special ApplicationServices . . . . . . . . . . . . . . . . . . . . 11-8

    Additional Maintenanceand Care . . . . . . . . . . . . . . . . . . . . 11-9

    Recommended Fluids,Lubricants, and Parts . . . . . . 11-12

    Maintenance Records . . . . . . . 11-16

    Technical Data . . . . . . . . . . . . . . . 12-1Vehicle Identification . . . . . . . . . 12-1Vehicle Data . . . . . . . . . . . . . . . . . . 12-2

    Customer Information . . . . . . . 13-1Customer Information . . . . . . . . 13-1Reporting Safety Defects . . . . 13-13Vehicle Data Recording andPrivacy. . . . . . . . . . . . . . . . . . . . 13-14

    OnStar . . . . . . . . . . . . . . . . . . . . . . . 14-1OnStar Overview. . . . . . . . . . . . . 14-1OnStar Services . . . . . . . . . . . . . . 14-2OnStar AdditionalInformation . . . . . . . . . . . . . . . . . . 14-6

    Index . . . . . . . . . . . . . . . . . . . . . i-1

  • Black plate (3,1)GMC Sierra Denali Owner Manual (GMNA Localizing-U.S/Canada/Mexico-7299750) - 2015 - crc - 6/9/14

    Introduction iii

    The names, logos, emblems,slogans, vehicle model names, andvehicle body designs appearing inthis manual including, but not limitedto, GM, the GM logo, GMC, theGMC Truck Emblem, SIERRA, andDENALI are trademarks and/orservice marks of General MotorsLLC, its subsidiaries, affiliates,or licensors.

    For vehicles first sold in Canada,substitute the name GeneralMotors of Canada Limited for GMCDivision wherever it appears in thismanual.

    This manual describes features thatmay or may not be on the vehiclebecause of optional equipment thatwas not purchased on the vehicle,model variants, countryspecifications, features/applicationsthat may not be available in yourregion, or changes subsequent tothe printing of this owner manual.

    Refer to the purchasedocumentation relating to yourspecific vehicle to confirm thefeatures.

    If the vehicle has the Duramax

    diesel engine, see the Duramaxdiesel supplement for additional andspecific information on this engine.

    Keep this manual in the vehicle forquick reference.

    Canadian Vehicle Owners

    Propritaires Canadiens

    A French language manual can beobtained from your dealer, atwww.helminc.com, or from:

    On peut obtenir un exemplaire dece guide en franais auprs duconcessionnaire ou l'adressesavant:

    Helm, IncorporatedAttention: Customer Service47911 Halyard DrivePlymouth, MI 48170

    Using this ManualTo quickly locate information aboutthe vehicle, use the Index in theback of the manual. It is analphabetical list of what is in themanual and the page number whereit can be found.

    Litho in U.S.A.Part No. 22993207 B-2 Second Printing 2014 General Motors LLC. All Rights Reserved.

  • Black plate (4,1)GMC Sierra Denali Owner Manual (GMNA Localizing-U.S/Canada/Mexico-7299750) - 2015 - crc - 6/9/14

    iv Introduction

    Danger, Warnings, andCautions

    { DangerText marked{ Danger providesinformation on risk of fatal injury.Disregarding this information mayendanger life.

    { WarningText marked{ Warning providesinformation on risk of accident orinjury. Disregarding thisinformation may lead to injury.

    { CautionText marked{ Caution providesinformation that may indicate ahazard that could result in injuryor death. It could also result inpossible damage to the vehicle.

    A circle with a slash through it is asafety symbol which means DoNot, Do not do this, or Do not letthis happen.

    SymbolsThe vehicle has components andlabels that use symbols instead oftext. Symbols are shown along withthe text describing the operation orinformation relating to a specificcomponent, control, message,gauge, or indicator.

    M : This symbol is shown whenyou need to see your owner manualfor additional instructions orinformation.

    * : This symbol is shown whenyou need to see a service manualfor additional instructions orinformation.

  • Black plate (5,1)GMC Sierra Denali Owner Manual (GMNA Localizing-U.S/Canada/Mexico-7299750) - 2015 - crc - 6/9/14

    Introduction v

    Vehicle Symbol Chart

    Here are some additional symbolsthat may be found on the vehicleand what they mean. For moreinformation on the symbol, refer tothe Index.

    0 : Adjustable Pedals9 : Airbag Readiness Light! : Antilock Brake System (ABS)g : Audio Steering Wheel Controlsor OnStar (if equipped)

    $ : Brake System Warning Light" : Charging SystemI : Cruise ControlB : Engine Coolant TemperatureO : Exterior Lamps# : Fog Lamps. : Fuel Gauge

    + : Fuses3 : Headlamp High/Low-BeamChanger

    ( : Heated Steering Wheelj : LATCH System ChildRestraints

    * : Malfunction Indicator Lamp: : Oil Pressureg : Outside Power FoldawayMirrors

    O : Power/ : Remote Vehicle Start> : Safety Belt Reminders7 : Tire Pressure Monitor_ : Tow/Haul Moded : Traction Control/StabiliTrak

    M : Windshield Washer Fluid

  • Black plate (6,1)GMC Sierra Denali Owner Manual (GMNA Localizing-U.S/Canada/Mexico-7299750) - 2015 - crc - 6/9/14

    vi Introduction

    2 NOTES

  • Black plate (1,1)GMC Sierra Denali Owner Manual (GMNA Localizing-U.S/Canada/Mexico-7299750) - 2015 - crc - 6/9/14

    In Brief 1-1

    In Brief

    Instrument PanelInstrument Panel . . . . . . . . . . . . . . 1-2

    Initial Drive InformationRemote Keyless Entry (RKE)System . . . . . . . . . . . . . . . . . . . . . . 1-4

    Remote Vehicle Start . . . . . . . . . 1-5Door Locks . . . . . . . . . . . . . . . . . . . 1-5Windows . . . . . . . . . . . . . . . . . . . . . . 1-6Seat Adjustment . . . . . . . . . . . . . . 1-7Memory Features . . . . . . . . . . . . . 1-8Heated and Cooled FrontSeats . . . . . . . . . . . . . . . . . . . . . . . . 1-8

    Head Restraint Adjustment . . . . 1-9Safety Belts . . . . . . . . . . . . . . . . . . . 1-9Passenger Sensing System . . . 1-9Mirror Adjustment . . . . . . . . . . . . 1-10

    Steering WheelAdjustment . . . . . . . . . . . . . . . . . 1-11

    Throttle and Brake PedalAdjustment . . . . . . . . . . . . . . . . . 1-12

    Interior Lighting . . . . . . . . . . . . . . 1-12Exterior Lighting . . . . . . . . . . . . . 1-13Windshield Wiper/Washer . . . . 1-13Climate Controls . . . . . . . . . . . . . 1-14Transmission . . . . . . . . . . . . . . . . 1-15Four-Wheel Drive . . . . . . . . . . . . 1-15

    Vehicle FeaturesInfotainment System . . . . . . . . . 1-16Steering Wheel Controls . . . . . 1-16Cruise Control . . . . . . . . . . . . . . . 1-17Driver InformationCenter (DIC) . . . . . . . . . . . . . . . 1-17

    Forward Collision Alert (FCA)System . . . . . . . . . . . . . . . . . . . . . 1-18

    Lane DepartureWarning (LDW) . . . . . . . . . . . . . 1-18

    Rear VisionCamera (RVC) . . . . . . . . . . . . . 1-18

    Parking Assist . . . . . . . . . . . . . . . 1-18Power Outlets . . . . . . . . . . . . . . . 1-18Universal Remote System . . . 1-19Sunroof . . . . . . . . . . . . . . . . . . . . . . 1-19

    Performance and MaintenanceTraction Control/ElectronicStability Control . . . . . . . . . . . . 1-20

    Tire Pressure Monitor . . . . . . . . 1-20Engine Oil Life System . . . . . . 1-21E85 or FlexFuel . . . . . . . . . . . . . . 1-21Driving for Better FuelEconomy . . . . . . . . . . . . . . . . . . . 1-21

    Roadside AssistanceProgram . . . . . . . . . . . . . . . . . . . . 1-22

    OnStar . . . . . . . . . . . . . . . . . . . . . 1-22

  • Black plate (2,1)GMC Sierra Denali Owner Manual (GMNA Localizing-U.S/Canada/Mexico-7299750) - 2015 - crc - 6/9/14

    1-2 In Brief

    Instrument Panel

  • Black plate (3,1)GMC Sierra Denali Owner Manual (GMNA Localizing-U.S/Canada/Mexico-7299750) - 2015 - crc - 6/9/14

    In Brief 1-3

    1. Instrument Panel IlluminationControl on page 6-6.

    2. Integrated Trailer Brake Control(ITBC) System (If Equipped).See Towing Equipment onpage 9-78.

    3. Exterior Lamp Controls onpage 6-1.

    Fog Lamps on page 6-5 (IfEquipped).

    4. Air Vents on page 8-5.

    5. Turn Signal Lever. See Turn andLane-Change Signals onpage 6-4.

    Windshield Wiper/Washer onpage 5-3.

    6. Favorite Switches (Out of View).See Steering Wheel Controls onpage 5-2.

    Volume Switches (Out of View).See Steering Wheel Controls onpage 5-2.

    7. Instrument Cluster on page 5-9.

    8. Hazard Warning Flashers onpage 6-4

    9. Shift Lever. See AutomaticTransmission on page 9-33.

    Tow/Haul Selector Button (IfEquipped). See Tow/Haul Modeon page 9-37.

    Range Selection Mode (AllisonTransmission and Hydra-Matic

    6-Speed Button) (If Equipped).See Manual Mode on page 9-36.

    10. Light Sensor. See AutomaticHeadlamp System onpage 6-3.

    11. Infotainment on page 7-1.

    12. Electronic Transfer CaseControl (If Equipped). SeeFour-Wheel Drive onpage 9-38.

    Card Holder (If Equipped). SeeInstrument Panel Storage onpage 4-1.

    13. Parking Brake on page 9-46.

    14. Data Link Connector (DLC)(Out of View). See MalfunctionIndicator Lamp on page 5-18.

    15. Cruise Control on page 9-51.

    Forward Collision Alert (FCA)System on page 9-57 (IfEquipped).

    16. Steering Wheel Adjustment onpage 5-2 (Out of View).

    17. Horn on page 5-3.

    18. Hood Release. See Hood onpage 10-4.

    19. Steering Wheel Controls onpage 5-2 (If Equipped).

    Driver Information Center (DIC)Controls. See DriverInformation Center (DIC) onpage 5-27.

    20. Heated and Cooled FrontSeats on page 3-7 (IfEquipped).

    21. Dual Automatic Climate ControlSystem on page 8-1.

  • Black plate (4,1)GMC Sierra Denali Owner Manual (GMNA Localizing-U.S/Canada/Mexico-7299750) - 2015 - crc - 6/9/14

    1-4 In Brief

    22. g Traction Control/ElectronicStability Control on page 9-48.

    0 Pedal Adjust Switch (IfEquipped). See AdjustableThrottle and Brake Pedal onpage 9-24.

    { Cargo Lamp on page 6-6.X Parking Assist Button (IfEquipped). See AssistanceSystems for Parking or Backingon page 9-54.

    @ Lane Departure Warning(LDW) on page 9-60 (IfEquipped).

    5 Hill Descent Control Switch(If Equipped). See Hill DescentControl (HDC) on page 9-50.

    q Exhaust Brake (IfEquipped). See ExhaustBrake in the Duramax dieselsupplement.

    Auxiliary Button (If Equipped).See Add-On ElectricalEquipment on page 9-88.

    23. USB Port. See Infotainment onpage 7-1.

    24. Power Outlets on page 5-5.

    25. Power Outlet (AlternatingCurrent). See Power Outlets onpage 5-5.

    Initial DriveInformation

    Remote Keyless Entry(RKE) SystemThe RKE transmitter functions maywork from up to 60 m (197 ft) awayfrom the vehicle.

    K : Press to unlock the driver door.Press K again within three secondsto unlock all remaining doors.

  • Black plate (5,1)GMC Sierra Denali Owner Manual (GMNA Localizing-U.S/Canada/Mexico-7299750) - 2015 - crc - 6/9/14

    In Brief 1-5

    Q : Press to lock all doors. Lockand unlock feedback can bepersonalized. See VehiclePersonalization on page 5-41.

    7 : Press and release one time toinitiate vehicle locator. Press 7 andhold for at least three seconds tosound the panic alarm. Press 7again to cancel the panic alarm.

    See Keys on page 2-1 and RemoteKeyless Entry (RKE) SystemOperation on page 2-3.

    Remote Vehicle StartIf equipped, the engine can bestarted from outside of the vehicle.

    Starting the Vehicle

    1. Aim the RKE transmitter at thevehicle.

    2. Press and release Q.

    3. Immediately, press and hold /for at least four seconds or untilthe turn signal lamps flash.

    When the vehicle starts, the parkinglamps will turn on and remain on aslong as the engine is running. Thedoors will be locked and the climatecontrol system may come on.

    The engine will continue to run for10 minutes. Repeat the steps for a10-minute time extension. Remotestart can be extended only once.

    Canceling a Remote Start

    To cancel a remote start, do one ofthe following:. Aim the RKE transmitter at the

    vehicle and press and hold/until the parking lamps turn off.

    . Turn on the hazard warningflashers.

    . Turn the vehicle on and then off.

    See Remote Vehicle Start onpage 2-6.

    Door LocksThere are several ways to lock andunlock the vehicle.

    From outside, use the RemoteKeyless Entry (RKE) transmitter orthe key in the driver door.

    From inside, use the power doorlocks.

    From inside, pull the door handleonce to unlock the door. Pull againto open the door.

  • Black plate (6,1)GMC Sierra Denali Owner Manual (GMNA Localizing-U.S/Canada/Mexico-7299750) - 2015 - crc - 6/9/14

    1-6 In Brief

    Power Door Locks

    Crew/Double Cab Premium Trim,Other Models Similar

    Q : Press to lock the doors.K : Press to unlock the doors.See Door Locks on page 2-7 andPower Door Locks on page 2-8.

    Windows

    Power Windows

    Crew/Double Cab Premium TrimShown, Other Models Similar

    The driver door has a switch tocontrol all windows. Eachpassenger door has a switch tocontrol that window. The powerwindows work when the ignition is inON/RUN or ACC/ACCESSORY,or when Retained Accessory Power(RAP) is active. See RetainedAccessory Power (RAP) onpage 9-29.

    Press the switch to lower thewindow. Pull the switch up to raiseit. See Windows on page 2-17 andPower Windows on page 2-18.

    Express Windows

    The express window feature allowsthe windows to be raised andlowered without holding the switch.

    To activate express-down, press theswitch down fully and release.

    The driver window has anexpress-up feature. Pull the switchup fully and release to activate.

  • Black plate (7,1)GMC Sierra Denali Owner Manual (GMNA Localizing-U.S/Canada/Mexico-7299750) - 2015 - crc - 6/9/14

    In Brief 1-7

    Power Sliding Rear Window

    If equipped, the power sliding rearwindow works when the ignition hasbeen turned to ACC/ACCESSORYor ON/RUN, or when RetainedAccessory Power (RAP) is active.See Retained Accessory Power(RAP) on page 9-29.. Press the switch to open the

    window.. Pull the switch down to close the

    window.

    The power sliding rear windowcannot be operated manually.

    Seat Adjustment

    Power Seats

    To adjust a power seat:. Move the seat forward or

    rearward by sliding the controlforward or rearward.

    . Raise or lower the front part ofthe seat cushion by moving thefront of the control up or down.

    . Raise or lower the seat bymoving the rear of the control upor down.

    See Power Seat Adjustment onpage 3-3.

    Lumbar Adjustment

    To adjust the power lumbar support:. Press and hold the control

    forward to increase or rearwardto decrease upper and lowerlumbar support at the same time.

  • Black plate (8,1)GMC Sierra Denali Owner Manual (GMNA Localizing-U.S/Canada/Mexico-7299750) - 2015 - crc - 6/9/14

    1-8 In Brief

    . Press and hold the control up toincrease upper lumbar supportand decrease lower lumbarsupport.

    Press and hold the control downto increase lower lumbar supportand decrease upper lumbarsupport.

    See Lumbar Adjustment onpage 3-3.

    Reclining Seatbacks

    To adjust the seatback:. Tilt the top of the control

    rearward to recline.. Tilt the top of the control forward

    to raise.

    See Reclining Seatbacks onpage 3-4.

    Memory Features

    The SET, "1," "2," andB (Exit)buttons on the driver door are usedto manually save and recall memorysettings for the driver seat, outsidemirrors, and adjustable pedals.

    See Memory Seats on page 3-5 andVehicle Personalization onpage 5-41.

    Heated and Cooled FrontSeats

    The buttons are on the center stack.To operate, the engine must berunning.

  • Black plate (9,1)GMC Sierra Denali Owner Manual (GMNA Localizing-U.S/Canada/Mexico-7299750) - 2015 - crc - 6/9/14

    In Brief 1-9

    PressI to heat the driver orpassenger seatback only.

    Press J to heat the driver orpassenger seat cushion andseatback.

    PressA to cool the driver orpassenger seat.

    See Heated and Cooled Front Seatson page 3-7.

    Head RestraintAdjustmentDo not drive until the head restraintsfor all occupants are installed andadjusted properly.

    To achieve a comfortable seatingposition, change the seatbackrecline angle as little as necessarywhile keeping the seat and the headrestraint height in the properposition.

    See Head Restraints on page 3-2and Power Seat Adjustment onpage 3-3.

    Safety Belts

    Refer to the following sections forimportant information on how to usesafety belts properly.. Safety Belts on page 3-9.. How to Wear Safety Belts

    Properly on page 3-10.. Lap-Shoulder Belt on page 3-11.. Lower Anchors and Tethers for

    Children (LATCH System) onpage 3-39.

    Passenger SensingSystem

    United States

    Canada and Mexico

    The passenger sensing system (ifequipped) turns off the frontoutboard passenger frontal airbagunder certain conditions. No otherairbag is affected by the passengersensing system. See PassengerSensing System on page 3-25.

  • Black plate (10,1)GMC Sierra Denali Owner Manual (GMNA Localizing-U.S/Canada/Mexico-7299750) - 2015 - crc - 6/9/14

    1-10 In Brief

    The passenger airbag statusindicator lights on the on theoverhead console are visible whenthe vehicle is started. SeePassenger Airbag Status Indicatoron page 5-17.

    Mirror AdjustmentUsing hood-mounted air deflectorsand add-on convex mirrorattachments could decrease mirrorperformance.

    Exterior Mirrors

    Power Mirrors

    Base Power Mirrors

    1. Press (1) or (2) to select thedriver side or passenger sidemirror.

    2. Press the arrows on the controlpad to move the mirror up,down, right or left.

    3. Adjust each outside mirror sothat a little of the vehicle and thearea behind it can be seen.

    Keep the selector switch in thecenter position when not adjustingeither outside mirror.

    Uplevel with Power FoldingMirrors

    1. Press (1) or (3) to select thedriver or passenger side mirror.

    2. Press the arrows on the controlpad to move the mirror up,down, right, or left.

    3. Adjust each outside mirror sothat a little of the vehicle and thearea behind it can be seen.

  • Black plate (11,1)GMC Sierra Denali Owner Manual (GMNA Localizing-U.S/Canada/Mexico-7299750) - 2015 - crc - 6/9/14

    In Brief 1-11

    4. Press either (1) or (3) again todeselect the mirror.

    See Power Mirrors on page 2-13.

    If equipped with power foldingmirrors:

    1. Press (2) to fold the mirrors outto the driving position.

    2. Press (2) again to fold themirrors in to the folded position.

    See Folding Mirrors on page 2-14.

    The mirrors may also include amemory function that works with thememory seats. See Memory Seatson page 3-5.

    Interior Mirror

    Adjustment

    Adjust the mirror for a clear view ofthe area behind the vehicle.

    Automatic Dimming RearviewMirror

    The automatic dimming mirror willautomatically reduce the glare fromthe headlamps from behind. Thedimming feature comes on when thevehicle is started.

    See Automatic Dimming RearviewMirror on page 2-17.

    Steering WheelAdjustment

    To adjust the tilt and telescopingsteering wheel:

    1. Push the lever (1) down to movethe steering wheel forward orrearward. Lift the lever up to lockthe wheel in place.

    2. Pull the lever (2) toward you andrelease, to move the steeringwheel up or down.

    The ignition may need to be set tothe ACC/ACCESSORY or ON/RUNposition to disengage the tilt andtelescoping steering column andallow easier adjustment.

    Do not adjust the steering wheelwhile driving.

  • Black plate (12,1)GMC Sierra Denali Owner Manual (GMNA Localizing-U.S/Canada/Mexico-7299750) - 2015 - crc - 6/9/14

    1-12 In Brief

    Throttle and Brake PedalAdjustmentIf equipped, the position of thethrottle and brake pedals can bechanged.

    The switch used to adjust thepedals is on the center stack, belowthe climate controls.

    Lift the switch up to move thepedals closer to your body. Pressthe switch down to move thepedals away.

    See Adjustable Throttle and BrakePedal on page 9-24.

    Interior LightingDome Lamps

    There are dome lamps in theoverhead console and the headliner,if equipped.

    To change the dome lamp settings,press the following:

    OFF: Turns the lamps off, evenwhen a door is open.

    DOOR: The lamps come onautomatically when a door isopened.

    ON: Turns all dome lamps on.

    Reading Lamps

    There are reading lamps in theoverhead console and the headliner,if equipped. To operate, the ignitionmust be in the ACC/ACCESSORYor ON/RUN position or usingRetained Accessory Power (RAP).

  • Black plate (13,1)GMC Sierra Denali Owner Manual (GMNA Localizing-U.S/Canada/Mexico-7299750) - 2015 - crc - 6/9/14

    In Brief 1-13

    Pressm orn next to each readinglamp to turn it on or off.

    For more information about interiorlighting, see Instrument PanelIllumination Control on page 6-6.

    Exterior Lighting

    The exterior lamp control is on theinstrument panel to the left of thesteering wheel.

    O : Turns off the automaticheadlamps and Daytime RunningLamps (DRL). Turn the headlampcontrol to the off position again toturn the automatic headlamps orDRL back on.

    For vehicles first sold in Canada, offwill only work when the vehicle is inP (Park).

    AUTO: Automatically turns on theheadlamps at normal brightness,together with the following:. Parking Lamps. Instrument Panel Lights. Taillamps. License Plate Lamps. Roof Marker Lamps (If

    Equipped). Front/Rear Sidemarker Lamps

    ; : Turns on the parking lampsincluding all lamps, except theheadlamps.

    5 : Turns on the headlampstogether with the parking lamps andinstrument panel lights.

    See:. Exterior Lamp Controls on

    page 6-1.. Daytime Running Lamps (DRL)

    on page 6-3.. Fog Lamps on page 6-5.

    Windshield Wiper/Washer

    The windshield wiper control is onthe turn signal lever.

    The windshield wipers are controlledby turning the band withz on it.

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    1-14 In Brief

    1 : Fast wipes.w : Slow wipes.

    3 INT: Turn the band up for morefrequent wipes or down for lessfrequent wipes.

    OFF: Turns the windshieldwipers off.

    8 : For a single wipe, turn to8,then release. For several wipes,hold the band on8 longer.L m : Push the paddle at the top ofthe lever to spray washer fluid onthe windshield.

    See Windshield Wiper/Washer onpage 5-3.

    Climate ControlsThe heating, cooling, and ventilation in the vehicle can be controlled withthis system.

    1. Driver Temperature Control

    2. A/C (Air Conditioning)

    3. Air Delivery Mode Controls

    4. Fan Control

    5. Defrost

    6. Passenger Temperature Control

    7. AUTO (Automatic Operation)

    8. Air Recirculation

    9. Power Button

    10. Rear Window Defogger

    11. SYNC (SynchronizedTemperature)

    See Dual Automatic Climate ControlSystem on page 8-1.

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    In Brief 1-15

    Transmission

    Range Selection Mode

    The Range Selection Mode buttonis on the shift lever.

    To enable Range Selection:

    1. Move the shift lever toM (Manual Mode). The currentrange will appear next to the M.This is the highest possiblerange with all lower gearsaccessible. As an example,when 5 (Fifth) gear is selected,1 (First) through 5 (Fifth) gearsare available.

    2. Press the plus/minus buttons toselect the range of gears forcurrent driving conditions. SeeManual Mode on page 9-36.

    While using Range Selection Mode,cruise control and the Tow/Haulmode can be used.

    Grade Braking is not available whenRange Selection Mode is active.See Tow/Haul Mode on page 9-37.

    Four-Wheel DriveIf the vehicle has Four-Wheel Drive,the engine's driving power can besent to all four wheels for extratraction.

    Transfer Case Controls

    The vehicle will have one of twostyles of transfer case controls. Usethese controls to shift into and out ofthe different four-wheel drivemodes.

    Electronic Transfer Case

    This transfer case knob is to the leftof the steering column.

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    1-16 In Brief

    Automatic Transfer Case

    This transfer case knob is to the leftof the steering column.

    The different drive options that maybe available are described following.

    2 m (Two-Wheel Drive High): Thissetting is used for driving in moststreet and highway situations.

    AUTO (Automatic Four-WheelDrive): This setting is ideal for usewhen road surface tractionconditions are variable.

    Do not use AUTO mode to park ona steep grade with poor tractionsuch as ice, snow, mud or gravel. InAUTO mode only the rear wheelswill hold the vehicle from slidingwhen parked. If parking on a steepgrade, use 4 m to keep all fourwheels engaged.

    4 m (Four-Wheel Drive High): Usethis setting when extra traction isneeded, such as on snowy or icyroads or in most off-road situations.

    N (Neutral): Shift to this settingonly when towing the vehicle. SeeRecreational Vehicle Towing onpage 10-89 or Trailer Towing onpage 9-70.

    4 n (Four-Wheel Drive Low): Thissetting sends maximum power to allfour wheels. Choose Four-WheelDrive Low when driving in deepsand, mud, or snow, and whileclimbing or descending steep hills.

    See Four-Wheel Drive onpage 9-38.

    Vehicle Features

    Infotainment SystemSee the infotainment manual forinformation on the radio, audioplayers, phone, navigation system,and voice or speech recognition.It also includes information onsettings.

    Steering Wheel ControlsThe infotainment system can beoperated by using the steeringwheel controls. See "SteeringWheel Controls" in the infotainmentmanual.

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    In Brief 1-17

    Cruise Control

    5 : Press to turn the system on oroff. A white indicator comes on inthe instrument cluster when cruisecontrol is on and turns off whencruise control is off.

    + RES: If there is a set speed inmemory, press briefly to resume tothat speed or press and hold toaccelerate. If cruise control isalready active, use to increasevehicle speed.

    SET : Press briefly to set thespeed and activate cruise control.If cruise control is already active,use to decrease vehicle speed.

    * : Press to disengage cruisecontrol without erasing the setspeed from memory.

    See Cruise Control on page 9-51.

    Driver InformationCenter (DIC)The DIC display is in the instrumentcluster. It shows the status of manyvehicle systems.

    w orx : Press to move up ordown in a list.

    o or p : Press to move betweenthe interactive display zones in thecluster.

    V : Press to open a menu or selecta menu item. Press and hold toreset values on certain screens.

    See Driver Information Center (DIC)on page 5-27.

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    1-18 In Brief

    Forward Collision Alert(FCA) SystemIf equipped, FCA may help avoid orreduce the harm caused byfront-end crashes. FCA provides agreen indicator,V, when a vehicleis detected ahead. This indicatordisplays amber if you follow anothervehicle much too closely. Whenapproaching a vehicle ahead tooquickly, FCA provides a red flashingalert on the windshield and rapidlybeeps or pulses the driver seat.

    See Forward Collision Alert (FCA)System on page 9-57.

    Lane DepartureWarning (LDW)If equipped, LDW is intended to helpavoid unintentional lane departuresat speeds of 56 km/h (35 mph) orgreater. LDW uses a camera sensorto detect the lane markings. TheLDW indicator, @, appears green ifa lane marking is detected. If thevehicle departs the lane, the

    indicator will change to amber andflash. In addition, the driver seat willpulse or beeps will sound.

    See Lane Departure Warning (LDW)on page 9-60.

    Rear VisionCamera (RVC)If equipped, the RVC displays aview of the area behind the vehicle,on the center stack display, whenthe vehicle is shifted intoR (Reverse).

    See Assistance Systems for Parkingor Backing on page 9-54.

    Parking AssistIf equipped, Rear Parking Assist(RPA) uses sensors on the rearbumper to assist with parking andavoiding objects while inR (Reverse). It operates at speedsless than 8 km/h (5 mph). RPA maydisplay a warning triangle on theRear Vision Camera screen and agraphic on the instrument cluster to

    provide the object distance. Inaddition, multiple beeps or seatpulses may occur if very close to anobject.

    The vehicle may also have the FrontParking Assist system.

    See Assistance Systems for Parkingor Backing on page 9-54.

    Power OutletsAccessory power outlets can beused to plug in electrical equipment,such as a cell phone, MP3player, etc.

    The vehicle may have up to fouraccessory power outlets.

    Vehicles with a Center Console. One or two in front of the

    cupholders on the centerconsole.

    . One inside the center console.

    . One on the rear of the centerconsole.

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    In Brief 1-19

    Vehicles with Bench Seats. One on the center stack below

    the climate control system.. One or two in the storage area

    on the bench seat.

    Lift the cover to access and replacewhen not in use.

    See Power Outlets on page 5-5.

    Universal Remote System

    If equipped with the UniversalRemote system, these buttons willbe in the front overhead console.

    This system provides a way toreplace up to three remote controltransmitters used to activatedevices such as garage dooropeners, security systems, andhome automation devices.

    See Universal Remote System onpage 5-48.

    Sunroof

    If equipped, the sunroof onlyoperates when the ignition is inACC/ACCESSORY or ON/RUN,or when Retained Accessory Power(RAP) is active. See RetainedAccessory Power (RAP) onpage 9-29.

    Vent: From the closed position,press the rear of the TILT switch tovent the sunroof.

    Manual-Open/Manual-Close: Toopen the sunroof, press and holdthe rear of the SLIDE switch untilthe sunroof reaches the desiredposition. Press and hold the front ofthe SLIDE switch to close it.

    Express-Open/Express-Close: Toexpress-open the sunroof, fullypress and release the rear of theSLIDE switch until the sunroofreaches the desired position. Toexpress-close the sunroof, fullypress and release the front of theSLIDE switch. Press the switchagain to stop it.

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    1-20 In Brief

    When the sunroof is opened, an airdeflector will automatically raise.The air deflector will retract whenthe sunroof is closed.

    The sunroof also has a sunshadethat can be pulled forward to blockthe rays of the sun. Open and closethe sunshade manually.

    If an object is in the path of thesunroof while it is closing, theanti-pinch feature will detect theobject and stop the sunroof.

    See Sunroof on page 2-21.

    Performance andMaintenance

    Traction Control/Electronic StabilityControlThe vehicle has a traction controlsystem that limits wheel spin andthe StabiliTrak system that assistswith directional control of the vehiclein difficult driving conditions. Bothsystems come on automaticallywhen the vehicle is started andbegins to move.. To turn off traction control, press

    and release g on the centerstack. The traction off light idisplays in the instrumentcluster. The appropriate DriverInformation Center (DIC)message displays. See RideControl System Messages onpage 5-35.

    . To turn off both traction controland StabiliTrak, press andhold g until i and g illuminatein the instrument cluster and theappropriate DIC messagedisplays. See Ride ControlSystem Messages on page 5-35.

    . Press and release g again toturn on both systems.

    . StabiliTrak will automatically turnon if the vehicle exceeds56 km/h (35 mph). Tractioncontrol will remain off.

    See Traction Control/ElectronicStability Control on page 9-48.

    Tire Pressure MonitorThis vehicle may have a TirePressure Monitor System (TPMS).

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    In Brief 1-21

    The low tire pressure warning lightalerts to a significant loss inpressure of one of the vehicle'stires. If the warning light comes on,stop as soon as possible and inflatethe tires to the recommendedpressure shown on the Tire andLoading Information label. SeeVehicle Load Limits on page 9-15.The warning light will remain on untilthe tire pressure is corrected.

    The low tire pressure warning lightmay come on in cool weather whenthe vehicle is first started, and thenturn off as the vehicle is driven. Thismay be an early indicator that thetire pressures are getting low andthe tires need to be inflated to theproper pressure.

    The TPMS does not replace normalmonthly tire maintenance. Maintainthe correct tire pressures.

    See Tire Pressure Monitor Systemon page 10-58.

    Engine Oil Life SystemThe engine oil life system calculatesengine oil life based on vehicle useand displays a DIC message whenit is necessary to change the engineoil and filter. The oil life systemshould be reset to 100% onlyfollowing an oil change.

    Resetting the Oil Life System

    1. Display OIL LIFE REMAININGon the DIC. See DriverInformation Center (DIC) onpage 5-27.

    2. Press and hold V for severalseconds. The oil life will changeto 100%.

    The oil life system can also be resetas follows:

    1. Turn the ignition to ON/RUN withthe engine off.

    2. Fully press the accelerator pedalslowly three times withinfive seconds.

    3. Display the OIL LIFEREMAINING on the DIC. If thedisplay shows 100%, the systemis reset.

    See Engine Oil Life System onpage 10-11.

    E85 or FlexFuelVehicles with a yellow fuel cap canuse either unleaded gasoline orethanol fuel containing up to 85%ethanol (E85). See E85 or FlexFuelon page 9-64. For all other vehicles,use only the unleaded gasolinedescribed under Fuel on page 9-62.

    Driving for Better FuelEconomyDriving habits can affect fuelmileage. Here are some driving tipsto get the best fuel economypossible.. Avoid fast starts and accelerate

    smoothly.. Brake gradually and avoid

    abrupt stops.

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    1-22 In Brief

    . Avoid idling the engine for longperiods of time.

    . When road and weatherconditions are appropriate, usecruise control.

    . Always follow posted speedlimits or drive more slowly whenconditions require.

    . Keep vehicle tires properlyinflated.

    . Combine several trips into asingle trip.

    . Replace the vehicle's tires withthe same TPC Spec numbermolded into the tire's sidewallnear the size.

    . Follow recommended scheduledmaintenance.

    Roadside AssistanceProgramU.S.: 1-888-881-3302

    TTY Users (U.S. Only):1-888-889-2438

    Canada: 1-800-268-6800

    New GMC owners are automaticallyenrolled in the Roadside AssistanceProgram.

    See Roadside Assistance Programon page 13-5.

    OnStar

    This vehicle may be equipped with acomprehensive, in-vehicle systemthat can connect to a live OnStarAdvisor for Emergency, Security,Navigation, Connection, andDiagnostic Services. OnStarservices may require a paidsubscription. See OnStar Overviewon page 14-1.

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    Keys, Doors, and Windows 2-1

    Keys, Doors, andWindows

    Keys and LocksKeys . . . . . . . . . . . . . . . . . . . . . . . . . . 2-1Remote Keyless Entry (RKE)System . . . . . . . . . . . . . . . . . . . . . . 2-3

    Remote Keyless Entry (RKE)System Operation . . . . . . . . . . . 2-3

    Remote Vehicle Start . . . . . . . . . 2-6Door Locks . . . . . . . . . . . . . . . . . . . 2-7Power Door Locks . . . . . . . . . . . . 2-8Delayed Locking . . . . . . . . . . . . . . 2-8Automatic Door Locks . . . . . . . . . 2-8Lockout Protection . . . . . . . . . . . . 2-8Safety Locks . . . . . . . . . . . . . . . . . . 2-8

    DoorsTailgate . . . . . . . . . . . . . . . . . . . . . . . 2-9

    Vehicle SecurityVehicle Security . . . . . . . . . . . . . . 2-10Vehicle Alarm System . . . . . . . 2-10Immobilizer . . . . . . . . . . . . . . . . . . 2-11Immobilizer Operation . . . . . . . 2-12

    Exterior MirrorsConvex Mirrors . . . . . . . . . . . . . . 2-13Power Mirrors . . . . . . . . . . . . . . . . 2-13Folding Mirrors . . . . . . . . . . . . . . . 2-14Heated Mirrors . . . . . . . . . . . . . . . 2-15Automatic Dimming Mirror . . . 2-15Blind Spot Mirrors . . . . . . . . . . . 2-15Reverse Tilt Mirrors . . . . . . . . . . 2-17

    Interior MirrorsInterior Rearview Mirrors . . . . . 2-17Automatic Dimming RearviewMirror . . . . . . . . . . . . . . . . . . . . . . . 2-17

    WindowsWindows . . . . . . . . . . . . . . . . . . . . . 2-17Power Windows . . . . . . . . . . . . . 2-18Rear Windows . . . . . . . . . . . . . . . 2-20Sun Visors . . . . . . . . . . . . . . . . . . . 2-20

    RoofSunroof . . . . . . . . . . . . . . . . . . . . . . 2-21

    Keys and Locks

    Keys

    { WarningLeaving children in a vehicle withthe ignition key is dangerous andchildren or others could beseriously injured or killed. Theycould operate the power windowsor other controls or make thevehicle move. The windows willfunction with the keys in theignition, and children or otherscould be caught in the path of aclosing window. Do not leavechildren in a vehicle with theignition key.

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    2-2 Keys, Doors, and Windows

    The key is used for the ignition andall door locks.

    Programming Keys

    Follow these procedures to programup to eight keys to the vehicle.

    Programming with aRecognized Key

    To program a new key:

    1. Insert the original, alreadyprogrammed key in the ignitionand turn the key to the ON/RUNposition.

    2. Turn the key to LOCK/OFF, andremove the key.

    3. Insert the new key to beprogrammed and turn it to theON/RUN position withinfive seconds.

    The security light will turn offonce the key has beenprogrammed.

    4. Repeat Steps 13 if additionalkeys are to be programmed.

    If a key is lost or damaged, see yourdealer to have a new key made.

    Programming without aRecognized Key

    Program a new key to the vehiclewhen a recognized key is notavailable. Canadian regulationsrequire that owners see their dealer.

    If there are no currently recognizedkeys available, follow this procedureto program the first key.

    This procedure will takeapproximately 30 minutes tocomplete for the first key. Thevehicle must be off and all of thekeys you wish to program must bewith you.

    1. Insert the new vehicle key intothe ignition.

    2. Turn to ON/RUN. The securitylight will come on.

    3. Wait 10 minutes until thesecurity light turns off.

    4. Turn the ignition to LOCK/OFF.

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    Keys, Doors, and Windows 2-3

    5. Repeat Steps 24 two moretimes. After the third time, turn toON/RUN; the key is learned andall previously known keys will nolonger work with the vehicle.

    Remaining keys can be learned byfollowing the procedure inProgramming with aRecognized Key.

    The key has a bar-coded key tagthat the dealer or qualified locksmithcan use to make new keys. Storethis information in a safe place, notin the vehicle.

    See your dealer if a replacementkey or additional key is needed.

    If it becomes difficult to turn a key,inspect the key blade for debris.Periodically clean with a brushor pick.

    With an active OnStar subscription,an OnStar Advisor may remotelyunlock the vehicle. See OnStarOverview on page 14-1.

    Remote Keyless Entry(RKE) SystemSee Radio Frequency Statement onpage 13-12.

    If there is a decrease in the RKEoperating range:. Check the distance. The

    transmitter may be too far fromthe vehicle.

    . Check the location. Othervehicles or objects may beblocking the signal.

    . Check the transmitter's battery.See Battery Replacement laterin this section.

    . If the transmitter is still notworking correctly, see yourdealer or a qualified technicianfor service.

    Remote Keyless Entry(RKE) System OperationThe RKE transmitter functions maywork up to 60 m (197 ft) away fromthe vehicle.

    Other conditions can affect theperformance of the transmitter. SeeRemote Keyless Entry (RKE)System on page 2-3.

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    2-4 Keys, Doors, and Windows

    With Remote Start (withoutRemote Start Similar)

    / (Remote Vehicle Start):If equipped,/ is used to start theengine from outside the vehicleusing the RKE transmitter. SeeRemote Vehicle Start on page 2-6.

    Q (Lock): Press to lock all doors.If enabled through the DriverInformation Center (DIC), the turnsignal lamps flash once to indicatelocking has occurred. If enabledthrough the DIC, the horn chirps

    when Q is pressed again withinthree seconds. See VehiclePersonalization on page 5-41.

    Pressing Q arms the contenttheft-deterrent system. See VehicleAlarm System on page 2-10.

    If equipped with auto mirror folding,pressing and holding Q forone second will fold the mirrors. Theauto mirror folding feature will notoperate unless it is enabled. SeeVehicle Personalization onpage 5-41.

    K (Unlock): Press once to unlockonly the driver door. If K is pressedagain within three seconds, allremaining doors unlock. The interiorlamps may come on and stay on for20 seconds or until the ignition isturned on.

    If enabled through the DIC, the turnsignal lamps flash twice to indicateunlocking has occurred. See VehiclePersonalization on page 5-41.If enabled through the DIC, the

    exterior lamps may turn on. SeeVehicle Personalization onpage 5-41.

    Pressing K on the RKE transmitterdisarms the content theft-deterrentsystem. See Vehicle Alarm Systemon page 2-10.

    If equipped with auto mirror folding,pressing and holding K forone second will unfold the mirrors.The auto mirror folding feature willnot operate unless it is enabled.See Vehicle Personalization onpage 5-41.

    7 (Vehicle Locator/PanicAlarm): Press and release onetime to initiate vehicle locator. Theturn signal lamps flash and the hornsounds three times.

    Press and hold 7 for at leastthree seconds to sound the panicalarm. The turn signal lamps flashand the horn sounds repeatedly for30 seconds. The alarm turns offwhen the ignition is moved to ON/

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    Keys, Doors, and Windows 2-5

    RUN or 7 is pressed again. Theignition must be in LOCK/OFF forthe panic alarm to work.

    Programming Transmitters tothe Vehicle

    Only RKE transmitters programmedto this vehicle will work. If atransmitter is lost or stolen, areplacement can be purchased andprogrammed through your dealer.Each vehicle can have up toeight transmitters programmed to it.See your dealer for transmitterprogramming.

    Battery Replacement

    Replace the battery in thetransmitter soon if the REPLACEBATTERY IN REMOTE KEYmessage displays in the DIC.

    { CautionWhen replacing the battery, donot touch any of the circuitry onthe transmitter. Static from yourbody could damage thetransmitter.

    To replace the battery:

    1. Separate and remove the backcover of the transmitter with aflat, thin object, such as a coin.

    2. Press and slide the battery downtoward the pocket of thetransmitter in the direction of thekey ring. Do not use a metalobject.

    3. Remove the battery.

    4. Insert the new battery, positiveside facing up. Replace with aCR2032 or equivalent battery.

    5. Push together the transmitterback cover top side first, andthen the bottom toward thekey ring.

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    2-6 Keys, Doors, and Windows

    Remote Vehicle StartIf equipped with the remote startfeature, the climate control systemwill come on when the vehicle isstarted remotely depending on theoutside temperature.

    The rear defog and heated andcooled seats, if equipped, may alsocome on. See Heated and CooledFront Seats on page 3-7 andVehicle Personalization onpage 5-41.

    Laws in some communities mayrestrict the use of remote starters.Check local regulations for anyrequirements on remote starting ofvehicles.

    Do not use remote start if thevehicle is low on fuel.

    The vehicle cannot be remotestarted if:. The key is in the ignition (Key

    Access) or the transmitter is inthe vehicle (Keyless Access)

    . The hood is not closed.

    . There is an emission controlsystem malfunction and themalfunction indicator lamp is on.

    The engine will turn off during aremote vehicle start if:. The coolant temperature gets

    too high.. The oil pressure gets low.

    The RKE transmitter range may bereduced while the vehicle is running.

    Other conditions can affect theperformance of the transmitter. SeeRemote Keyless Entry (RKE)System on page 2-3 or VehiclePersonalization on page 5-41.

    Starting the Engine Using RemoteStart

    1. Press and release Q.

    2. Immediately press and hold /until the turn signal lamps flashor for at least four seconds.

    When the vehicle starts, theparking lamps will turn on. Thedoors will be locked and theclimate control system maycome on.

    The engine will continue to runfor 10 minutes. Repeat the stepsfor 10-minute time extension.

    Place the ignition in ON/RUN/START to operate the vehicle.

    Extending Engine Run Time

    The engine run time can beextended by 10 minutes, for a totalof 20 minutes, if during the first10 minutes Steps 12 are repeatedwhile the engine is still running.

    A maximum of two remote starts,or a single start with an extension,is allowed between ignition cycles.

    The vehicle's ignition must beturned on and then back off to useremote start again.

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    Keys, Doors, and Windows 2-7

    Canceling a Remote Start

    To cancel a remote start, do one ofthe following:

    . Press and hold/ until theparking lamps turn off.

    . Turn on the hazard warningflashers.

    . Turn the ignition on and then off.

    Door Locks

    { WarningUnlocked doors can bedangerous.

    . Passengers, especiallychildren, can easily open thedoors and fall out of a movingvehicle. When a door islocked, the handle will notopen it. The chance of beingthrown out of the vehicle in acrash is increased if thedoors are not locked. So, all

    (Continued)

    Warning (Continued)

    passengers should wearsafety belts properly and thedoors should be lockedwhenever the vehicle isdriven.

    . Young children who get intounlocked vehicles may beunable to get out. A child canbe overcome by extreme heatand can suffer permanentinjuries or even death fromheat stroke. Always lock thevehicle whenever leaving it.

    . Outsiders can easily enterthrough an unlocked doorwhen you slow down or stopthe vehicle. Locking the doorscan help prevent this fromhappening.

    There are several ways to lock andunlock the vehicle.

    From outside, use the RemoteKeyless Entry (RKE) transmitter orthe key in the driver door.

    From inside, use the power doorlocks. See Power Door Locks onpage 2-8.

    From inside, pull the door handleonce to unlock the door. Pull thehandle again to open the door.

    See Vehicle Alarm System onpage 2-10.

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    2-8 Keys, Doors, and Windows

    Power Door Locks

    Crew/Double Cab Premium TrimShown, Other Models Similar

    Q : Press to lock the doors.K : Press to unlock the doors.

    Delayed LockingIf equipped, when locking the doorswith the power lock switch and adoor open, the doors will lockfive seconds after the last door isclosed. Three chimes signal thatdelayed locking is in use.

    Pressing the power lock switchtwice overrides the delayed lockingfeature and immediately locks alldoors.

    This feature will not operate if thekey is in the ignition.

    Turn delayed locking on or off usingvehicle personalization. See VehiclePersonalization on page 5-41.

    Automatic Door LocksThe doors will lock automaticallywhen all doors are closed, theignition is on, and the shift lever ismoved out of P (Park).

    To unlock the doors:

    . Press K on a door.

    . Shift the transmission intoP (Park).

    Lockout ProtectionIf the driver side power door lockswitch is pressed when the driverdoor is open and the key is in theignition, all of the doors will lock andthen the driver door will unlock.

    This feature may be turned off andon through vehicle personalization.See Vehicle Personalization onpage 5-41.

    Safety LocksThe rear door safety locks preventpassengers from opening the reardoors from inside the vehicle.

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    Keys, Doors, and Windows 2-9

    Crew/Double Cab PremiumShown, Others Similar

    Press { to activate the safety lockson the rear doors. The indicator lightcomes on when activated. Thevehicle must be on, in ACC/ACCESSORY, or in RetainedAccessory Power (RAP). SeeRetained Accessory Power (RAP)on page 9-29.

    If the indicator light flashes, thefeature may not be working properly.

    Doors

    Tailgate

    { WarningIt is extremely dangerous to rideon the tailgate, even when thevehicle is operated at low speeds.People riding on the tailgate caneasily lose their balance and fallin response to vehiclemaneuvers. Falling from a movingvehicle may result in seriousinjuries or death. Do not allowpeople to ride on the tailgate. Besure everyone in your vehicle is ina seat and using a safety beltproperly.

    On vehicles with a lock on thetailgate, use the key to lock orunlock the tailgate.

    Open the tailgate by lifting up on itshandle while pulling thetailgate down.

    To shut the tailgate, firmly push itupward until it latches.

    After closing the tailgate, pull it backto be sure it latches securely.

    Tailgate Removal

    The tailgate can be removed toallow for different loading situations.Assistance may be needed with theremoval to avoid damage to thevehicle.

    On vehicles with a Rear VisionCamera, it must be disconnectedbefore removing the tailgate. SeeDriver Assistance Systems onpage 9-54.

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    2-10 Keys, Doors, and Windows

    To remove the tailgate:

    1. Raise the tailgate and support itfirmly. Pull out and hold thecable retaining clip (1). Push thecable (3) up and off of thebolt (2). Repeat on theother side.

    2. With the tailgate about halfwayopen, lift the right edge of thetailgate from the lower pivot.

    On vehicles with the tailgateassist feature, raise the tailgatenearly all the way to the closedposition prior to removing theleft edge.

    3. Move the tailgate to the right andaway to release the left edge.

    Reverse this procedure to reinstallthe tailgate. Make sure the tailgateis secure.

    Vehicle SecurityThis vehicle has theft-deterrentfeatures; however, they do not makethe vehicle impossible to steal.

    Vehicle Alarm System

    If equipped with the anti-theft alarmsystem, the indicator light, on theinstrument panel near thewindshield, indicates the status ofthe system.

    Off: Alarm system is disarmed.

    On Solid: Vehicle is securedduring the delay to arm the system.

    Fast Flash: Vehicle is unsecured.A door or the hood is open.

  • Black plate (11,1)GMC Sierra Denali Owner Manual (GMNA Localizing-U.S/Canada/Mexico-7299750) - 2015 - crc - 6/9/14

    Keys, Doors, and Windows 2-11

    Slow Flash: Alarm system isarmed.

    Arming the Alarm System

    1. Turn off the vehicle.

    2. Lock the vehicle with one of thefollowing:. Use the Remote Keyless

    Entry (RKE) transmitter.

    . With a door open, press Qon the interior of the door.

    3. After 30 seconds the alarmsystem will arm, and theindicator light will begin to slowlyflash indicating the alarm systemis operating. Pressing Q on theRKE transmitter a second timewill bypass the 30-second delayand immediately arm the alarmsystem.

    The theft-deterrent alarm system willnot arm if the doors are locked withthe key.

    If the driver door is opened withoutfirst unlocking the RKE transmitter,the horn will chirp and the lights willflash to indicate pre-alarm. If thevehicle is not started, or the door isnot unlocked by pressing K on theRKE transmitter during the10-second pre-alarm, the alarm willbe activated.

    If a door or the hood is openedwithout first disarming the system,the turn signals will flash and thehorn will sound for about30 seconds. The alarm system willthen re-arm to monitor for the nextunauthorized event.

    Disarming the Alarm System

    To disarm the alarm system or turnoff the alarm if it has been activated:

    . Press K on the RKE transmitter.

    . Start the vehicle.

    To avoid setting off the alarm byaccident:. Lock the vehicle after all

    occupants have left the vehicleand all doors are closed.

    . Always unlock a door with theRKE transmitter.

    Unlocking the driver door with thekey will not disarm the system orturn off the alarm.

    How to Detect a TamperCondition

    If K is pressed on the RKEtransmitter and the horn chirps threetimes, an alarm occurred previouslywhile the alarm system was armed.

    ImmobilizerSee Radio Frequency Statement onpage 13-12.

  • Black plate (12,1)GMC Sierra Denali Owner Manual (GMNA Localizing-U.S/Canada/Mexico-7299750) - 2015 - crc - 6/9/14

    2-12 Keys, Doors, and Windows

    Immobilizer Operation

    This vehicle has a passivetheft-deterrent system.

    The system does not have to bemanually armed or disarmed.

    The vehicle is automaticallyimmobilized when the vehicle isturned off.

    The system is automaticallydisarmed when the key is turned toON/RUN, ACC/ACCESSORY,or START from the LOCK/OFFposition.

    The security light, in the instrumentcluster, comes on if there is aproblem with arming or disarmingthe theft-deterrent system.

    When trying to start the vehicle, thesecurity light comes on briefly whenthe ignition is turned on.

    If the engine does not start and thesecurity light stays on, there is aproblem with the system. Turn theignition off and try again.

    If the engine still does not start, andthe key appears to be undamaged,try another ignition key. It may benecessary to check the fuse. SeeFuses on page 10-39. If the enginestill does not start with the other key,the vehicle needs service. If thevehicle does start, the first key maybe faulty. See your dealer.

    It is possible for the immobilizersystem to learn new or replacementkeys. Up to eight keys can beprogrammed for the vehicle. Toprogram additional keys, see Keyson page 2-1. To program additionaltransmitters, see Remote KeylessEntry (RKE) System Operation onpage 2-3.

    Do not leave the key or device thatdisarms or deactivates the vehicletheft system in the vehicle.

    See your dealer to get a new keyblank cut exactly as the ignition keythat operates the system.

  • Black plate (13,1)GMC Sierra Denali Owner Manual (GMNA Localizing-U.S/Canada/Mexico-7299750) - 2015 - crc - 6/9/14

    Keys, Doors, and Windows 2-13

    Exterior Mirrors

    Convex Mirrors

    { WarningA convex mirror can make things,like other vehicles, look fartheraway than they really are. If youcut too sharply into the right lane,you could hit a vehicle on theright. Check the inside mirror orglance over your shoulder beforechanging lanes.

    The passenger side mirror is convexshaped. A convex mirror's surface iscurved so more can be seen fromthe driver seat.

    Power MirrorsUsing hood-mounted air deflectorsand add-on convex mirrorattachments could decrease mirrorperformance.

    Base Power Mirrors

    The power mirror controls are on thedriver door.

    1. Press (1) or (2) to select thedriver or passenger side mirror.

    2. Press one of the four arrows onthe control pad to move themirror in the desired direction.

    3. Adjust each outside mirror sothat a little of the vehicle and thearea behind it can be seen.

    4. Move the selector switch to thecenter position when notadjusting either outside mirror.

    Crew/Double Cab PremiumShown, Other Models Similar

    1. Press (1) or (2) to select thedriver or passenger side mirror.

    2. Press one of the four arrows onthe control pad while theindicator light on button (1) or (2)is illuminated, to move the mirrorin the desired direction.

    3. Adjust each outside mirror sothat a little of the vehicle and thearea behind it can be seen.

    4. Press either (1) or (2) again todeselect the mirror.

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    2-14 Keys, Doors, and Windows

    If you do not deselect the mirror, thefeature will turn off after aboutone minute.

    The mirrors may include a memoryfunction that works with the memoryseats. See Memory Seats onpage 3-5.

    Folding Mirrors

    Crew/Double Cab PremiumShown, Other Models Similar

    Power Folding

    If equipped with power foldingmirrors:

    1. Press (2) to fold the mirrors outto the driving position.

    2. Press (2) again to fold themirrors in to the folded position.

    The mirrors may also include amemory function that works with thememory seats. See Memory Seatson page 3-5.

    Resetting the Power FoldingMirrors

    Reset the power folding mirrors if:. The mirrors are accidentally

    obstructed while folding.. They are accidentally manually

    folded/unfolded.. The mirrors will not stay in the

    unfolded position.. The mirrors vibrate at normal

    driving speeds.

    Fold and unfold the mirrors threetimes using the mirror controls toreset them to their normal position.A popping noise may be heard. Thissound is normal after a manualfolding operation.

  • Black plate (15,1)GMC Sierra Denali Owner Manual (GMNA Localizing-U.S/Canada/Mexico-7299750) - 2015 - crc - 6/9/14

    Keys, Doors, and Windows 2-15

    Manual Folding

    If equipped, push the mirror towardthe vehicle to fold. Push the mirroroutward to return to its originalposition.

    Manually fold the mirrors inward toprevent damage when goingthrough an automatic car wash.

    Auto Mirror Folding

    If equipped, with the ignition off,press and hold Q on the RKEtransmitter for approximatelyone second to automatically fold theexterior mirrors. Press and hold Kon the RKE transmitter forapproximately one second to unfold.See Remote Keyless Entry (RKE)System Operation on page 2-3.

    This feature is turned on or offthrough vehicle personalization. SeeVehicle Personalization onpage 5-41.

    Turn Signal Indicator

    If equipped, indicator lights on themirror flash in the direction of theturn or lane change.

    Heated MirrorsIf equipped with heated mirrors:

    1 (Rear Window Defogger):Press to heat the mirrors. If thevehicle has towing mirrors, only theupper glass of the mirror is heated.The lower convex part of the towingmirrors is not heated.

    See Rear Window Defogger underDual Automatic Climate ControlSystem on page 8-1.

    Automatic DimmingMirrorIf equipped, the driver outside mirrorautomatically adjusts for the glare ofthe headlamps from behind. Thisfeature comes on when the vehicleis started.

    Blind Spot MirrorsIf equipped, there is a small convexmirror built into the upper and outercorner of the driver outside rearviewmirror. It can show objects that maybe in the vehicle's blind zone.

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    2-16 Keys, Doors, and Windows

    Driving with the Blind SpotMirror

    Actual Mirror View

    1. When the approaching vehicle isa long distance away, the imagein the main mirror is small andnear the inboard edge of themirror.

    2. As the vehicle gets closer, theimage in the main mirror getslarger and moves outboard.

    3. As the vehicle enters the blindzone, the image transitions fromthe main mirror to the blind spotmirror.

    4. When the vehicle is in the blindzone, the image only appears inthe blind spot mirror.

    Using the Outside Mirror withthe Blind Spot Mirror

    1. Set the main mirror so that theside of the vehicle can just beseen and the blind spot mirrorhas an unobstructed view.

    2. When checking for traffic orbefore changing a lane, look atthe main driver/passenger sidemirror to observe traffic in theadjacent lane, behind yourvehicle. Check the blind spotmirror for a vehicle in the blindzone. Then, glance over yourshoulder to double check beforemoving slowly into theadjacent lane.

  • Black plate (17,1)GMC Sierra Denali Owner Manual (GMNA Localizing-U.S/Canada/Mexico-7299750) - 2015 - crc - 6/9/14

    Keys, Doors, and Windows 2-17

    Reverse Tilt MirrorsIf equipped with memory seats, thepassenger and/or driver mirror tiltsto a preselected position when thevehicle is in R (Reverse). Thisfeature allows the driver to view thecurb when parallel parking. Themirror(s) return to the originalposition when the vehicle is shiftedout of R (Reverse), the ignition isturned off, or the vehicle is driven inR (Reverse) above a predeterminedspeed.

    Turn this feature on or off throughvehicle personalization. See VehiclePersonalization on page 5-41.

    Interior Mirrors

    Interior Rearview MirrorsAdjust the rearview mirror for a clearview of the area behind yourvehicle.

    If equipped with OnStar, the vehiclemay have three control buttons atthe bottom of the mirror. See yourdealer for more information aboutOnStar and how to subscribe to it.See OnStar Overview on page 14-1.

    Do not spray glass cleaner directlyon the mirror. Use a soft toweldampened with water.

    Automatic DimmingRearview MirrorThe mirror will automatically reducethe glare of the headlamps frombehind. The dimming feature comeson each time the vehicle is started.

    Windows

    { WarningNever leave a child, a helplessadult, or a pet alone in a vehicle,especially with the windowsclosed in warm or hot weather.They can be overcome by theextreme heat and sufferpermanent injuries or even deathfrom heat stroke.

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    2-18 Keys, Doors, and Windows

    The vehicle aerodynamics aredesigned to improve fuel economyperformance. This may result in apulsing sound when either rearwindow is down and the frontwindows are up. To reduce thesound, open either a front windowor the sunroof, if equipped.

    Power Windows

    { WarningChildren could be seriouslyinjured or killed if caught in thepath of a closing window. Neverleave keys in a vehicle withchildren. When there are childrenin the rear seat, use the windowlockout button to preventoperation of the windows. SeeKeys on page 2-1.

    Crew/Double Cab Premium TrimShown, Other Models Similar

    The driver door has a switch tocontrol all windows. Eachpassenger door has a switch tocontrol that window.

    The power windows:. Can be operated with the

    ignition in ON/RUN or ACC/ACCESSORY.

    . Can be operated in RetainedAccessory Power (RAP). SeeRetained Accessory Power(RAP) on page 9-29.

    . Will stop operation when anydoor is opened.

    Press the switch down to lower thewindow, and pull up the front of theswitch to raise the window.

    Express-Down Windows

    The express-down feature allowsthe window to be lowered withoutholding the switch. Press thewindow switch fully and release it toactivate the express-down feature.The express-down feature can becanceled at any time by brieflypressing the switch.

    Express-Up Window

    The driver window express-upfeature allows the window to beraised without holding the switch.Pull the window switch up fully andrelease it to activate the express-upfeature. The express-up feature canbe canceled at any time by brieflypulling the switch.

  • Black plate (19,1)GMC Sierra Denali Owner Manual (GMNA Localizing-U.S/Canada/Mexico-7299750) - 2015 - crc - 6/9/14

    Keys, Doors, and Windows 2-19

    Programming the PowerWindows

    If the battery on the vehicle hasbeen recharged or disconnected,or is not working, the driver powerwindow will need to bereprogrammed for the express-upfeature to work.

    To reprogram the power windows:

    1. Close all doors.

    2. Place the ignition in ACC/ACCESSORY or ON/RUN/START.

    3. From any open position, pull thepower window switch up until thewindow is fully closed.

    4. Hold the switch up forapproximately two seconds afterthe window is fully closed.

    The window is now reprogrammed.

    Express Window Anti-PinchFeature

    If any object is in the path of thewindow when express-up is active,the window stops at the obstacleand auto-reverses to a presetfactory position. Weather conditionssuch as severe icing also cause thewindow to auto-reverse. Thewindow returns to normal operationonce the obstacle or condition isremoved.

    Express Window Anti-PinchOverride

    { WarningIf express override is activated,the window will not reverseautomatically. You or others couldbe injured and the window couldbe damaged. Before you useexpress override, make sure thatall people and obstructions areclear of the window path.

    The anti-pinch feature can beoverridden in a supervised mode.Hold the window switch in thepartially or fully pulled up position.The window rises for as long as theswitch is held. Once the switch isreleased, the express mode isreactivated.

    In this mode, the window can stillclose on an object in its path. Usecare when using the override mode.

  • Black plate (20,1)GMC Sierra Denali Owner Manual (GMNA Localizing-U.S/Canada/Mexico-7299750) - 2015 - crc - 6/9/14

    2-20 Keys, Doors, and Windows

    Window Lockout

    Crew/Double Cab PremiumShown, Other Models Similar

    Z (Window Lockout): The driverdoor power window switch has alockout feature. This featureprevents the rear windows fromoperating, except from the driverposition. Press the switch to engageor disengage the lockout feature. Anindicator light on the switch willcome on when the lockout feature isengaged, and will go off whendisengaged.

    Rear Windows

    Power Sliding Rear Window

    If equipped, the power sliding rearwindow works when the ignition hasbeen turned to ACC/ACCESSORYor ON/RUN, or when RetainedAccessory Power (RAP) is active.See Retained Accessory Power(RAP) on page 9-29.. Press the switch to open the

    window.. Pull the switch to close the

    window.

    The power sliding rear windowcannot be operated manually.

    Sun Visors

    Pull the sun visor down to blockglare. If equipped, detach the sunvisor from the center mount to pivotto the side window or to extendalong the rod.

  • Black plate (21,1)GMC Sierra Denali Owner Manual (GMNA Localizing-U.S/Canada/Mexico-7299750) - 2015 - crc - 6/9/14

    Keys, Doors, and Windows 2-21

    Roof

    Sunroof

    If equipped, the sunroof operateswhen the ignition is in ACC/ACCESSORY or ON/RUN, or whenRetained Accessory Power (RAP) isactive. See Retained AccessoryPower (RAP) on page 9-29.

    Vent: From the closed position,press the rear of the TILT switch tovent the sunroof.

    Manual-Open/Manual-Close: Toopen the sunroof, press and holdthe rear of the SLIDE switch untilthe sunroof reaches the desiredposition. Press and hold the front ofthe SLIDE switch to close it

    Express-Open/Express-Close: Toexpress-open the sunroof, fullypress and release the rear of theSLIDE switch until the sunroofreaches the desired position. Toexpress-close the sunroof, fullypress and release the front of theSLIDE switch. Press the switchagain to stop it.

    When the sunroof is opened, an airdeflector will automatically raise.The air deflector will retract whenthe sunroof is closed.

    The sunroof also has a sunshade,which can be pulled forward to blocksun rays. The sunshade must beopened and closed manually.

    If an object is in the path of thesunroof while it is closing, theanti-pinch feature will detect theobject and stop the sunroof.

    Dirt and debris may collect on thesunroof seal or in the track. Thiscould cause an issue with sunroofoperation or noise. It could also plugthe water drainage system.Periodically open the sunroof andremove any obstacles or loosedebris. Wipe the sunroof seal androof sealing area using a cleancloth, mild soap, and water. Do notremove grease from the sunrooftracks.

    If water is seen dripping into thewater drainage system, this isnormal.

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    2-22 Keys, Doors, and Windows

    2 NOTES

  • Black plate (1,1)GMC Sierra Denali Owner Manual (GMNA Localizing-U.S/Canada/Mexico-7299750) - 2015 - crc - 6/9/14

    Seats and Restraints 3-1

    Seats andRestraints

    Head RestraintsHead Restraints . . . . . . . . . . . . . . . 3-2

    Front SeatsPower Seat Adjustment . . . . . . . 3-3Lumbar Adjustment . . . . . . . . . . . 3-3Reclining Seatbacks . . . . . . . . . . 3-4Memory Seats . . . . . . . . . . . . . . . . 3-5Heated and Cooled FrontSeats . . . . . . . . . . . . . . . . . . . . . . . . 3-7

    Rear SeatsRear Seats . . . . . . . . . . . . . . . . . . . . 3-8

    Safety BeltsSafety Belts . . . . . . . . . . . . . . . . . . . 3-9How to Wear Safety BeltsProperly . . . . . . . . . . . . . . . . . . . . 3-10

    Lap-Shoulder Belt . . . . . . . . . . . . 3-11

    Safety Belt Use DuringPregnancy . . . . . . . . . . . . . . . . . . 3-16

    Safety Belt Extender . . . . . . . . . 3-16Safety System Check . . . . . . . . 3-17Safety Belt Care . . . . . . . . . . . . . 3-17Replacing Safety Belt SystemParts after a Crash . . . . . . . . . 3-17

    Airbag SystemAirbag System . . . . . . . . . . . . . . . 3-18Where Are the Airbags? . . . . . 3-19When Should an AirbagInflate? . . . . . . . . . . . . . . . . . . . . . 3-21

    What Makes an AirbagInflate? . . . . . . . . . . . . . . . . . . . . . 3-23

    How Does an AirbagRestrain? . . . . . . . . . . . . . . . . . . . 3-23

    What Will You See after anAirbag Inflates? . . . . . . . . . . . . 3-23

    Passenger SensingSystem . . . . . . . . . . . . . . . . . . . . . 3-25

    Servicing the Airbag-EquippedVehicle . . . . . . . . . . . . . . . . . . . . . 3-29

    Adding Equipment to theAirbag-Equipped Vehicle . . . 3-29

    Airbag System Check . . . . . . . . 3-30Replacing Airbag SystemParts after a Crash . . . . . . . . . 3-31

    Child RestraintsOlder Children . . . . . . . . . . . . . . . 3-31Infants and YoungChildren . . . . . . . . . . . . . . . . . . . . 3-33

    Child Restraint Systems . . . . . 3-36Where to Put the Restraint . . . 3-38Lower Anchors and Tethersfor Children (LATCHSystem) . . . . . . . . . . . . . . . . . . . . 3-39

    Replacing LATCH SystemParts After a Crash . . . . . . . . . 3-46

    Securing Child Restraints(Rear Seat) . . . . . . . . . . . . . . . . . 3-46

    Securing Child Restraints(Front Passenger Seat) . . . . 3-48

  • Black plate (2,1)GMC Sierra Denali Owner Manual (GMNA Localizing-U.S/Canada/Mexico-7299750) - 2015 - crc - 6/9/14

    3-2 Seats and Restraints

    Head RestraintsFront Seats

    The vehicles front seats haveadjustable head restraints in theoutboard seating positions.

    { WarningWith head restraints that are notinstalled and adjusted properly,there is a greater chance thatoccupants will suffer a neck/spinal injury in a crash. Do notdrive until the head restraints forall occupants are installed andadjusted properly.

    Adjust the head restraint so that thetop of the restraint is at the sameheight as the top of the occupant'shead. This position reduces thechance of a neck injury in a crash.

    The height of the head restraint canbe adjusted. Pull the head restraintup to raise it. Try to move the headrestraint to make sure that it islocked in place.

    To lower the head restraint, pressthe button, located on the top of theseatback, and push the restraintdown. Try to move the headrestraint after the button is releasedto make sure that it is locked inplace.

  • Black plate (3,1)GMC Sierra Denali Owner Manual (GMNA Localizing-U.S/Canada/Mexico-7299750) - 2015 - crc - 6/9/14

    Seats and Restraints 3-3

    The head restraints adjust forwardand rearward. To adjust the headrestraint forward, grasp the headrestraint and pull forward to thedesired locking position. To adjustthe head restraint rearward, graspthe head restraint and pull forwardfully until the mechanism releasesand allows the head restraint toreturn to the full rear position.

    The front seat outboard headrestraints are not removable.

    Rear Seats

    The rear seat has adjustableheadrests in the outboard seatingpositions.

    The height of the headrest can beadjusted. Pull the headrest up toraise it. To lower the headrest, pushthe headrest down.

    If you are installing a child restraintin the rear seat, see Securing aChild Restraint Designed for theLATCH System under LowerAnchors and Tethers for Children(LATCH System) on page 3-39.

    Front Seats

    Power Seat Adjustment

    To adjust a power seat:. Move the seat forward or

    rearward by sliding the controlforward or rearward.

    . Raise or lower the front part ofthe seat cushion by moving thefront of the control up or down.

    . Raise or lower the seat bymoving the rear of the control upor down.

    To adjust the setback, see RecliningSeatbacks on page 3-4.

    To adjust the lumbar support, seeLumbar Adjustment on page 3-3.

    Some vehicles are equipped with afeature that activates a vibratingpulse alert in the driver seat to helpthe driver avoid crashes. See DriverAssistance Systems on page 9-54.

    Lumbar Adjustment

  • Black plate (4,1)GMC Sierra Denali Owner Manual (GMNA Localizing-U.S/Canada/Mexico-7299750) - 2015 - crc - 6/9/14

    3-4 Seats and Restraints

    To adjust the power lumbar support:. Press and hold the control

    forward to increase or rearwardto decrease upper and lowerlumbar support at the same time.

    . Press and hold the control up toincrease upper lumbar supportand decrease lower lumbarsupport.

    Press and hold the control downto increase lower lumbar supportand decrease upper lumbarsupport.

    Reclining Seatbacks

    To adjust the seatback:. Tilt the top of the control

    rearward to recline.. Tilt the top of the control forward

    to raise.

    { WarningSitting in a reclined position whenthe vehicle is in motion can bedangerous. Even when buckledup, the safety belts cannot dotheir job.

    The shoulder belt will not beagainst your body. Instead, it willbe in front of you. In a crash, youcould go into it, receiving neck orother injuries.

    The lap belt could go up overyour abdomen. The belt forceswould be there, not at your pelvicbones. This could cause seriousinternal injuries.

    For proper protection when thevehicle is in motion, have theseatback upright. Then sit wellback in the seat and wear thesafety belt properly.

  • Black plate (5,1)GMC Sierra Denali Owner Manual (GMNA Localizing-U.S/Canada/Mexico-7299750) - 2015 - crc - 6/9/14

    Seats and Restraints 3-5

    Do not have a seatback reclined ifthe vehicle is moving.

    Memory Seats

    The SET, "1," "2," andB (Exit)buttons on the driver door are usedto manually save and recall memorysettings for the driver seat, outsidemirrors, and adjustable pedals.

    Storing Memory Positions

    To save positions to the 1 and 2buttons:

    1. Adjust the driver seat, outsidemirrors, and adjustable pedals tothe desired driving positions.

    2. Press and release SET, thenimmediately press and hold 1until a beep sounds.

    3. Repeat Steps 1 and 2 for asecond driver using 2.

    To save positions to theB (Exit)button and easy exit features:

    1. Adjust the driver seat, adjustablepedals, and the outside mirrorson some vehicles to the desiredpositions for getting out of thevehicle.

    2. Press and release SET, thenimmediately press and holdBuntil a beep sounds.

    Manually Recalling MemoryPositions

    If the vehicle is OFF or not inP (Park), press and hold "1," "2," orB to manually recall the previouslystored memory positions. Releasing"1, "2," orB before the storedpositions are reached stops therecall.

  • Black plate (6,1)GMC Sierra Denali Owner Manual (GMNA Localizing-U.S/Canada/Mexico-7299750) - 2015 - crc - 6/9/14

    3-6 Seats and Restraints

    If the vehicle is ON and in P (Park),press and release 1, 2, orB tomanually recall the previouslystored memory positions. Placingthe ignition in OFF/LOCK before thestored positions are reached stopsthe recall.

    If something has blocked the driverseat and/or adjustable pedals whilerecalling a memory position, therecall may stop. Remove theobstruction; then press and hold theappropriate manual control for thememory item that is not recalling fortwo seconds. Try recalling thememory position again by pressingthe appropriate memory button.If the memory position is still notrecalling, see your dealer forservice.

    Automatically Recalling MemoryPositions (Auto Memory Recall)

    The Auto (Automatic) MemoryRecall feature automatically recallsthe current drivers previously stored1 or 2 position when entering thevehicle.

    If the Auto Memory Recall feature isenabled in the vehiclepersonalization menu, memory 1or 2 positions are recalled in thefollowing ways:

    . Press K on the RKE transmitterand open the driver door.

    . Press K on the RKE transmitterwhen the driver door isalready open.

    See Vehicle Personalization onpage 5-41.

    To stop recall movement, press oneof the memory, power mirror orpower seat controls; or press theadjustable pedal control.

    If something has blocked the driverseat and/or the adjustable pedalswhile recalling a memory position,the recall may stop. Remove theobstruction; then press and hold theappropriate manual control for thememory item that is not recalling fortwo seconds. Try recalling thememory position again by openingthe driver door and pressing K on

    the RKE transmitter. If the memoryposition is still not recalling, seeyour dealer for service.

    Easy Exit Recall

    If programmed on in the vehiclepersonalization menu, the easy exitfeature automatically moves thedriver seat, adjustable pedals, andoutside mirrors on some vehicles tothe memory positions saved to theB (Exit) button. See StoringMemory Positions listed previously.See also Vehicle Personalization onpage 5-41.

    Easy exit recall automaticallyactivates when one of the followingoccurs:. The vehicle is turned off and the

    driver door is opened within ashort time.

    . The vehicle is turned off with thedriver door open.

    If something has blocked the driverseat and/or adjustable pedals whilerecalling the exit position, the recallmay stop. Remove the obstruction;

  • Black plate (7,1)GMC Sierra Denali Owner Manual (GMNA Localizing-U.S/Canada/Mexico-7299750) - 2015 - crc - 6/9/14

    Seats and Restraints 3-7

    then press and hold the appropriatemanual control for the exit featurenot recalling for two seconds. Tryrecalling the exit position again.If the exit position is still notrecalling, see your dealer forservice.

    Heated and Cooled FrontSeats

    { WarningIf you cannot feel temperaturechange or pain to the skin, theseat heater may cause burns. Toreduce the risk of burns, peoplewith such a condition should usecare when using the seat heater,especially for long periods oftime. Do not place anything onthe seat that insulates againstheat, such as a blanket, cushion,cover, or similar item. This maycause the seat heater to

    (Continued)

    Warning (Continued)

    overheat. An overheated seatheater may cause a burn or maydamage the seat.

    The buttons are on the center stack.To operate, the engine must berunning.

    PressI to heat the driver orpassenger seatback only.

    Press J to heat the driver orpassenger seat cushion andseatback.

    PressA to cool the driver orpassenger seat.

    The indicator light on the buttoncomes on when this feature is on.

    Press the button once for thehighest setting. With each press ofthe button, the seat will change tothe next lower setting, and then tothe off setting. The indicator lightsnext to the buttons indicate three forthe highest setting and one for thelowest. If the heated seats are onhigh, their level may automaticallybe lowered.

    Remote Start Heated and CooledSeats

    During a remote start, the heated orcooled seats can be turned onautomatically. When it is coldoutside, the heated seats turn on,and when it is hot outside thecooled seats turn on. The heated orcooled seats are canceled when the

  • Black plate (8,1)GMC Sierra Denali Owner Manual (GMNA Localizing-U.S/Canada/Mexico-7299750) - 2015 - crc - 6/9/14

    3-8 Seats and Restraints

    ignition is turned on. Press theheated or cooled seat button to usethe heated or cooled seats after thevehicle is started.

    The heated or cooled seat indicatorlights do not turn on during a remotestart.

    The temperature performance of anunoccupied seat may be reduced.This is normal.

    The heated or cooled seats will notturn on during a remote start unlessthey are enabled in the vehiclepersonalization menu. See RemoteVehicle Start on page 2-6 andVehicle Personalization onpage 5-41.

    Rear SeatsFolding Rear Seat

    Either side of the rear seat can befolded for added cargo space.

    { CautionFolding a rear seat with the safetybelts still fastened may causedamage to the seat or the safetybelts. Always unbuckle the safetybelts and return them to theirnormal stowed position beforefolding a rear seat.

    Make sure that nothing is on theseat cushion.

    To fold the seat, slowly pull the seatcushion up.

    To return the seat to the normalseating position, slowly pull the seatcushion down.

    Make sure the safety belts are nottwisted or caught in the seatcushion.

  • Black plate (9,1)GMC Sierra Denali Owner Manual (GMNA Localizing-U.S/Canada/Mexico-7299750) - 2015 - crc - 6/9/14

    Seats and Restraints 3-9

    { WarningA safety belt that is improperlyrouted, not properly attached,or twisted will not provide theprotection needed in a crash. Theperson wearing the belt could beseriously injured. After raising therear seatback, always check to besure that the safety belts areproperly routed and attached, andare not twisted.

    Safety BeltsThis section of the manualdescribes how to use safety beltsproperly. It also describes somethings not to do with safety belts.

    { WarningDo not let anyone ride where asafety belt cannot be wornproperly. In a crash, if you or yourpassenger(s) are not wearingsafety belts, injuries can be muchworse than if you are wearingsafety belts. You can be seriouslyinjured or killed by hitting thingsinside the vehicle harder or bybeing ejected from the vehicle. Inaddition, anyone who is notbuckled up can strike otherpassengers in the vehicle.

    (Continued)

    Warning (Continued)

    It is extremely dangerous to ridein a cargo area, inside or outsideof a vehicle. In a collision,passengers riding in these areasare more likely to be seriouslyinjured or killed. Do not allowpassengers to ride in any area ofthe vehicle that is not equippedwith seats and safety belts.

    Always wear a safety belt, andcheck that all passenger(s) arerestrained properly too.

    This vehicle has indicators as areminder to buckle the sa


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