2015 GMC SIERRA Owner's Manual

Black plate (2,1)GMC 2015i Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/
Mexico-8431500) - 2015 - crc - 6/20/14
1-2 In Brief
Instrument Panel

Black plate (3,1)GMC 2015i Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/
Mexico-8431500) - 2015 - crc - 6/20/14
In Brief 1-3
1.Instrument Panel Illumination
Control on page 6-6.
2. Integrated Trailer Brake Control (ITBC) System (If Equipped).
See Towing Equipment on
page 9-78.
3. Exterior Lamp Controls on
page 6-1.
Fog Lamps on page 6-5 (If
Equipped).
4. Air Vents on page 8-4.
5. Turn Signal Lever. See Turn and
Lane-Change Signals on
page 6-4.
Windshield Wiper/Washer on
page 5-3.
6. Favorite Switches (Out of View). See Steering Wheel Controls on
page 5-2.
Volume Switches (Out of View).
See Steering Wheel Controls on
page 5-2.
7. Instrument Cluster on page 5-9. 8.
Hazard Warning Flashers on
page 6-4
9. Shift Lever. See Automatic
Transmission on page 9-33.
Tow/Haul Selector Button (If
Equipped). See Tow/Haul Mode
on page 9-39.
Range Selection Mode (If
Equipped). See Manual Mode on
page 9-36.
10. Light Sensor. See Automatic
Headlamp System on
page 6-3.
11. Infotainment on page 7-1.
12. Electronic Transfer Case Control (If Equipped). See
Four-Wheel Drive on
page 9-40.
13. Parking Brake on page 9-47.
14. Data Link Connector (DLC) (Out of View). See Malfunction
Indicator Lamp on page 5-18. 15.
Cruise Control on page 9-52.
Forward Collision Alert (FCA)
System on page 9-59 (If
Equipped).
16. Steering Wheel Adjustment on
page 5-2 (Out of View).
17. Horn on page 5-3.
18. Hood Release. See Hood on
page 10-4.
19. Steering Wheel Controls on
page 5-2 (If Equipped).
Driver Information Center (DIC)
Controls. See Driver
Information Center (DIC) on
page 5-27.
20. Heated and Cooled Front
Seats on page 3-7 (If
Equipped).
21. Dual Automatic Climate Control
System on page 8-1.

Black plate (4,1)GMC 2015i Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/
Mexico-8431500) - 2015 - crc - 6/20/14
1-4 In Brief
22.gTraction Control/Electronic
Stability Control on page 9-49.
0Pedal Adjust Switch (If
Equipped). See Adjustable
Throttle and Brake Pedal on
page 9-23.
{Cargo Lamp on page 6-6.
XParking Assist Button (If
Equipped). See Assistance
Systems for Parking or Backing
on page 9-56.
@Lane Departure Warning
(LDW) on page 9-61 (If
Equipped).
5Hill Descent Control Switch
(If Equipped). See Hill Descent
Control (HDC) on page 9-51.
qExhaust Brake (If
Equipped). See “Exhaust
Brake” in the Duramax diesel
supplement. Auxiliary Button (If Equipped).
See
Add-On Electrical
Equipment on page 9-88.
23. USB Port. See Infotainment on
page 7-1.
24. Power Outlets on page 5-5.
25. Power Outlet (Alternating Current) (If Equipped). See
Power Outlets on page 5-5.
Initial Drive
Information
Remote Keyless Entry
(RKE) System
The RKE transmitter functions may
work from up to 60 m (197 ft) away
from the vehicle.
K:Press to unlock the driver door.
Press
Kagain within three seconds
to unlock all remaining doors.

Black plate (5,1)GMC 2015i Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/
Mexico-8431500) - 2015 - crc - 6/20/14
In Brief 1-5
Q:Press to lock all doors. Lock
and unlock feedback can be
personalized. See Vehicle
Personalization on page 5-42.
7: Press and release one time to
initiate vehicle locator. Press
7and
hold for at least three seconds to
sound the panic alarm. Press
7
again to cancel the panic alarm.
See Keys on page 2-1 andRemote
Keyless Entry (RKE) System
Operation on page 2-4.
Remote Vehicle Start
If equipped, the engine can be
started from outside of the vehicle.
Starting the Vehicle
1. Aim the RKE transmitter at the vehicle.
2. Press and release
Q.
3. Immediately, press and hold
/
for at least four seconds or until
the turn signal lamps flash. When the vehicle starts, the parking
lamps will turn on and remain on as
long as the engine is running. The
doors will be locked and the climate
control system may come on.
The engine will continue to run for
10 minutes. Repeat the steps for a
10-minute time extension. Remote
start can be extended only once.
Canceling a Remote Start
To cancel a remote start, do one of
the following:
.Aim the RKE transmitter at the
vehicle and press and hold
/
until the parking lamps turn off.
.Turn on the hazard warning
flashers.
.Turn the vehicle on and then off.
See Remote Vehicle Start on
page 2-7.
Door Locks
There are several ways to lock and
unlock the vehicle.
From outside, use the Remote
Keyless Entry (RKE) transmitter or
the key in the driver door.
From inside, use the power door
locks.
From inside, pull the door handle
once to unlock the door. Pull again
to open the door.

Black plate (6,1)GMC 2015i Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/
Mexico-8431500) - 2015 - crc - 6/20/14
1-6 In Brief
Power Door Locks
Crew/Double Cab Premium TrimShown, Other Models Similar
Q: Press to lock the doors.
K: Press to unlock the doors.
See Door Locks on page 2-8 and
Power Door Locks on page 2-9.
Windows
Power Windows
Crew/Double Cab Premium Trim
Shown, Other Models Similar
The driver door has a switch to
control all windows. Each
passenger door has a switch to
control that window. The power
windows work when the ignition is in
ON/RUN or ACC/ACCESSORY,
or when Retained Accessory Power
(RAP) is active. See Retained
Accessory Power (RAP) on
page 9-29. Press the switch to lower the
window. Pull the switch up to raise
it. See
Windows on page 2-19 and
Power Windows on page 2-19.
Express Windows
The express window feature allows
the windows to be raised and
lowered without holding the switch.
To activate express-down, press the
switch down fully and release.
The driver window has an
express-up feature. Pull the switch
up fully and release to activate.

Black plate (7,1)GMC 2015i Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/
Mexico-8431500) - 2015 - crc - 6/20/14
In Brief 1-7
Power Sliding Rear Window
If equipped, the power sliding rear
window works when the ignition has
been turned to ACC/ACCESSORY
or ON/RUN, or when Retained
Accessory Power (RAP) is active.
SeeRetained 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 window
cannot be operated manually.
Seat Adjustment
Power Seats
To adjust a power seat:
.Move the seat forward or
rearward by sliding the control
forward or rearward.
.Raise or lower the front part of
the seat cushion by moving the
front of the control up or down.
.Raise or lower the seat by
moving the rear of the control up
or down. See
Power Seat Adjustment on
page 3-3.
Lumbar Adjustment
To adjust the power lumbar support:
.Press and hold the control
forward to increase or rearward
to decrease upper and lower
lumbar support at the same time.

Black plate (8,1)GMC 2015i Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/
Mexico-8431500) - 2015 - crc - 6/20/14
1-8 In Brief
.Press and hold the control up to
increase upper lumbar support
and decrease lower lumbar
support.
Press and hold the control down
to increase lower lumbar support
and decrease upper lumbar
support.
See Lumbar Adjustment on
page 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 on
page 3-4.
Memory Features
The SET, "1," "2," andB(Exit)
buttons on the driver door are used
to manually save and recall memory
settings for the driver seat, outside
mirrors, and adjustable pedals.
See Memory Seats on page 3-5 and
Vehicle Personalization on
page 5-42.
Heated and Cooled Front
Seats
The buttons are on the center stack.
To operate, the engine must be
running.

Black plate (9,1)GMC 2015i Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/
Mexico-8431500) - 2015 - crc - 6/20/14
In Brief 1-9
PressIto heat the driver or
passenger seatback only.
Press
Jto heat the driver or
passenger seat cushion and
seatback.
Press
Ato cool the driver or
passenger seat.
See Heated and Cooled Front Seats
on page 3-7.
Head Restraint
Adjustment
Do not drive until the head restraints
for all occupants are installed and
adjusted properly.
To achieve a comfortable seating
position, change the seatback
recline angle as little as necessary
while keeping the seat and the head
restraint height in the proper
position.
See Head Restraints on page 3-2
and Power Seat Adjustment on
page 3-3.
Safety Belts
Refer to the following sections for
important information on how to use
safety belts properly.
.Safety Belts on page 3-10.
.How to Wear Safety Belts
Properly on page 3-11.
.Lap-Shoulder Belt on page 3-12.
.Lower Anchors and Tethers for
Children (LATCH System) on
page 3-38.
Passenger Sensing
System
United States
Canada and Mexico
The passenger sensing system (if
equipped) turns off the front
outboard passenger frontal airbag
under certain conditions. No other
airbag is affected by the passenger
sensing system. See Passenger
Sensing System on page 3-24.