2022 GMC SIERRA ECU

GMC Sierra/Sierra Denali 1500 Owner Manual (GMNA-Localizing-U.S./
Canada/Mexico-15883563) - 2022 - CRC - 11/19/21
Introduction 5
1. Tow/Haul Mode (On Some Models). SeeDriver Mode Control 0249.
Automatic Transfer Case Control (If
Equipped). See Four-Wheel Drive 0240.
Driver Mode Control 0249 (If Equipped).
2. Air Vents 0201.
3. Head-Up Display (HUD) 0132 (If
Equipped).
4. Turn Signal Lever. See Turn and
Lane-Change Signals 0149.
Windshield Wiper/Washer 0102.
5. Instrument Cluster (Base Level) 0109 or
Instrument Cluster (Uplevel) 0110.
6. Shift Lever. See Automatic Transmission
(Mechanical Shifter) 0231 or
Automatic Transmission (Electronic
Shifter) 0233.
Range Selection Mode. See Manual Mode
(Mechanical Shifter) 0237 or
Manual Mode (Electronic Shifter) 0239.
7. Light Sensor. See Automatic Headlamp
System 0147.
Vehicle Alarm System. See Vehicle
Security 031.
8. Infotainment Controls. See Overview
(Uplevel Radio) 0157 or
Overview (Base Radio) 0156. 9.
Climate Control Systems 0196 (If
Equipped).
Dual Automatic Climate Control System
0 198 (If Equipped).
10. Heated and Ventilated Front Seats 052
(If Equipped).
11. Lane Keep Assist (LKA) 0302 (If
Equipped).
Park Assist Switch (If Equipped). See
Assistance Systems for Parking or Backing
0 283.
Auto Stop Disable Switch (If Equipped).
See Stop/Start System 0225.
Power Release Tailgate (If Equipped). See
Tailgate 023.
Hazard Warning Flashers 0148.
Traction Control/Electronic Stability
Control 0247.
Hill Descent Control Switch (If Equipped).
See Hill Descent Control (HDC) 0249.
Power Assist Steps 030 (If Equipped).
Express Window Down Button (If
Equipped). See Power Windows 040.
Tow/Haul Mode 0240 (On Some
Models). Exhaust Brake (If Equipped). See Duramax
Diesel Supplement.
Power Take-Off (PTO) (If Equipped). See
Duramax Diesel Supplement.
12. Power Outlet (Alternating Current) (If Equipped). See Power Outlets0104.
13. Power Outlet (Direct Current) Power
Outlets 0104.
14. USB Port 0166.
15. Wireless Charging 0106 (If Equipped).
16. Trailer Brake Control Panel (If Equipped). See“Integrated Trailer Brake Control
System” underTowing Equipment 0317.
17. ENGINE START/STOP. See Ignition
Positions 0222.
18. Steering Wheel Controls 0101 (If
Equipped).
Driver Information Center (DIC) Controls.
See Driver Information Center (DIC) (Base
Level) 0128 or
Driver Information Center (DIC) (Uplevel)
0 130.
19. Horn 0102.
20. Hood Release. See Hood0343.
21. Steering Wheel Adjustment 0101 (Out
of View).

GMC Sierra/Sierra Denali 1500 Owner Manual (GMNA-Localizing-U.S./
Canada/Mexico-15883563) - 2022 - CRC - 11/19/21
8 Introduction
1.Head-Up Display (HUD) 0132 (If
Equipped).
2. Air Vents 0201.
3. Turn Signal Lever. See Turn and
Lane-Change Signals 0149.
Windshield Wiper/Washer 0102.
4. Range Selection Mode. See Manual Mode
(Mechanical Shifter) 0237 or
Manual Mode (Electronic Shifter) 0239.
5. Instrument Cluster (Base Level) 0109 or
Instrument Cluster (Uplevel) 0110.
6. Infotainment Controls. See Overview
(Uplevel Radio) 0157 or
Overview (Base Radio) 0156.
7. Infotainment System. See Overview
(Uplevel Radio) 0157 or
Overview (Base Radio) 0156.
8. Light Sensor. See Automatic Headlamp
System 0147.
Vehicle Alarm System. See Vehicle
Security 031.
9. Upper Glove Box. See Glove Box096.
10. Lower Glove Box. See Glove Box096.
11. Upper Glove Box Button. See Glove Box
0 96. 12.
Lane Keep Assist (LKA) 0302.
Auto Stop Disable Switch (If Equipped).
See Stop/Start System 0225.
Power Release Tailgate (If Equipped). See
Tailgate 023.
Hazard Warning Flashers 0148.
Traction Control/Electronic Stability
Control 0247.
Hill Descent Control Switch (If Equipped).
See Hill Descent Control (HDC) 0249.
Power Assist Steps 030 (If Equipped).
Express Window Down Button (If
Equipped). See Power Windows 040.
Tow/Haul Mode 0240 (On Some
Models).
Exhaust Brake (If Equipped). See Duramax
Diesel Supplement.
Power Take-Off (PTO) (If Equipped). See
Duramax Diesel Supplement.
13. USB Port 0166.
14. Climate Control Systems 0196 (If
Equipped).
Dual Automatic Climate Control System
0 198 (If Equipped). Heated and Ventilated Front Seats
052
(If Equipped).
Heated Steering Wheel 0102 (If
Equipped).
15. Front Center Console Storage.
16. Cupholders 096.
17. Shift Lever. See Automatic Transmission
(Mechanical Shifter) 0231 or
Automatic Transmission (Electronic
Shifter) 0233.
18. Trailer Brake Control Panel (If Equipped). See“Integrated Trailer Brake Control
System” underTowing Equipment 0317.
19. ENGINE START/STOP. See Ignition
Positions 0222.
20. Steering Wheel Controls 0101.
Driver Information Center (DIC) Controls.
See Driver Information Center (DIC) (Base
Level) 0128 or
Driver Information Center (DIC) (Uplevel)
0 130.
21. Horn 0102.
22. Steering Wheel Adjustment 0101 (Out
of View).
23. Hood Release. See Hood0343.

GMC Sierra/Sierra Denali 1500 Owner Manual (GMNA-Localizing-U.S./
Canada/Mexico-15883563) - 2022 - CRC - 11/19/21
Introduction 11
1.Air Vents 0201.
2. Head-Up Display (HUD) 0132 (If
Equipped).
3. Turn Signal Lever. See Turn and
Lane-Change Signals 0149.
Windshield Wiper/Washer 0102.
4. Range Selection Mode. See Manual Mode
(Mechanical Shifter) 0237 or
Manual Mode (Electronic Shifter) 0239.
5. Instrument Cluster (Base Level) 0109 or
Instrument Cluster (Uplevel) 0110.
6. Infotainment Controls. See Overview
(Uplevel Radio) 0157 or
Overview (Base Radio) 0156.
7. Infotainment System. See Overview
(Uplevel Radio) 0157 or
Overview (Base Radio) 0156.
8. Light Sensor. See Automatic Headlamp
System 0147.
Vehicle Alarm System. See Vehicle
Security 031.
9. Upper Glove Box Button. See Glove Box
0 96.
10. Upper Glove Box. See Glove Box096.
11. Lower Glove Box. See Glove Box096. 12.
Climate Control Systems 0196 (If
Equipped).
Dual Automatic Climate Control System
0 198 (If Equipped).
Heated and Ventilated Front Seats 052
(If Equipped).
Heated Steering Wheel 0102 (If
Equipped).
13. Lane Keep Assist (LKA) 0302.
Auto Stop Disable Switch (If Equipped).
See Stop/Start System 0225.
Power Release Tailgate (If Equipped). See
Tailgate 023.
Hazard Warning Flashers 0148.
Traction Control/Electronic Stability
Control 0247.
Hill Descent Control Switch (If Equipped).
See Hill Descent Control (HDC) 0249.
Power Assist Steps 030 (If Equipped).
Express Window Down Button (If
Equipped). See Power Windows 040.
Tow/Haul Mode 0240 (On Some
Models).
Exhaust Brake (If Equipped). See Duramax
Diesel Supplement. Power Take-Off (PTO) (If Equipped). See
Duramax Diesel Supplement.
14. Front Center Console Storage.
15. USB Port 0166.
16. Cupholders 096.
17. Trailer Brake Control Panel (If Equipped). See“Integrated Trailer Brake Control
System” underTowing Equipment 0317.
18. Shift Lever. See Automatic Transmission
(Mechanical Shifter) 0231 or
Automatic Transmission (Electronic
Shifter) 0233.
19. ENGINE START/STOP. See Ignition
Positions 0222.
20. Steering Wheel Controls 0101.
Driver Information Center (DIC) Controls.
See Driver Information Center (DIC) (Base
Level) 0128 or
Driver Information Center (DIC) (Uplevel)
0 130.
21. Horn 0102.
22. Hood Release. See Hood0343.
23. Steering Wheel Adjustment 0101 (Out
of View).

GMC Sierra/Sierra Denali 1500 Owner Manual (GMNA-Localizing-U.S./
Canada/Mexico-15883563) - 2022 - CRC - 11/19/21
Keys, Doors, and Windows 13
Keys, Doors, and
Windows
Keys and Locks
Keys . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
Remote Keyless Entry (RKE) System . . . . 14
Remote Keyless Entry (RKE) SystemOperation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
Remote Vehicle Start . . . . . . . . . . . . . . . . . . . 20
Door Locks . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
Power Door Locks . . . . . . . . . . . . . . . . . . . . . . . 22
Delayed Locking . . . . . . . . . . . . . . . . . . . . . . . . 22
Automatic Door Locks . . . . . . . . . . . . . . . . . . 22
Lockout Protection . . . . . . . . . . . . . . . . . . . . . . 22
Safety Locks . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
Doors
Tailgate . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
Transporting Items That Can Catch Fire . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30
Power Assist Steps . . . . . . . . . . . . . . . . . . . . . 30
Vehicle Security
Vehicle Security . . . . . . . . . . . . . . . . . . . . . . . . . 31
Vehicle Alarm System . . . . . . . . . . . . . . . . . . . 31
Steering Column Lock . . . . . . . . . . . . . . . . . . . 32
Immobilizer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32
Immobilizer Operation . . . . . . . . . . . . . . . . . . 32
Exterior Mirrors
Convex Mirrors . . . . . . . . . . . . . . . . . . . . . . . . . 33
Manual Mirrors . . . . . . . . . . . . . . . . . . . . . . . . . 33
Trailer-Tow Mirrors . . . . . . . . . . . . . . . . . . . . . 34
Power Mirrors . . . . . . . . . . . . . . . . . . . . . . . . . . 35
Folding Mirrors . . . . . . . . . . . . . . . . . . . . . . . . . 35
Heated Mirrors . . . . . . . . . . . . . . . . . . . . . . . . . 36
Automatic Dimming Mirror . . . . . . . . . . . . . 36
Blind Spot Mirrors . . . . . . . . . . . . . . . . . . . . . . 36
Reverse Tilt Mirrors . . . . . . . . . . . . . . . . . . . . . 37
Interior Mirrors
Interior Rearview Mirrors . . . . . . . . . . . . . . . 37
Manual Rearview Mirror . . . . . . . . . . . . . . . . 37
Automatic Dimming Rearview Mirror . . . 37
Rear Camera Mirror . . . . . . . . . . . . . . . . . . . . . 37
Windows
Windows . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40
Manual Windows . . . . . . . . . . . . . . . . . . . . . . 40
Power Windows . . . . . . . . . . . . . . . . . . . . . . . . 40
Rear Windows . . . . . . . . . . . . . . . . . . . . . . . . . . 42
Sun Visors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42
Roof
Sunroof . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43
Keys and Locks
Keys
{Warning
Leaving children in a vehicle with a
Remote Keyless Entry (RKE) transmitter is
dangerous and children or others could
be seriously injured or killed. They could
operate the power windows or other
controls or make the vehicle move. The
windows will function with the RKE
transmitter in the vehicle, and children or
others could be caught in the path of a
closing window. Do not leave children in
a vehicle with an RKE transmitter.

GMC Sierra/Sierra Denali 1500 Owner Manual (GMNA-Localizing-U.S./
Canada/Mexico-15883563) - 2022 - CRC - 11/19/21
Keys, Doors, and Windows 23
The safety lock is on the inside edge of the
rear doors. To use the safety lock:1. Move the lever down to the lock position.
2. Close the door.
3. Do the same for the other rear door.
To open a rear door when the safety lock
is on: 1. Unlock the door by activating the inside handle, by pressing the power door
unlock switch, or by using the Remote
Keyless Entry (RKE) transmitter.
2. Open the door from the outside. When the safety lock is enabled, adults and
older children will not be able to open the
rear door from the inside. Cancel the safety
locks to enable the doors to open from the
inside.
To cancel the safety lock:
1. Unlock the door and open it from the outside.
2. Move the lever up to unlock. Do the same for the other door.Doors
Tailgate
Manual Tailgate
{Warning
It is extremely dangerous to ride on the
tailgate, even when the vehicle is
operated at low speeds. People riding on
the tailgate can easily lose their balance
and fall in response to vehicle maneuvers.
Falling from a moving vehicle may result
in serious injuries or death. Do not allow
people to ride on the tailgate. Be sure
everyone in your vehicle is in a seat and
using a seat belt properly. Use the key to unlock the tailgate.
Open the tailgate by lifting up on its handle
while pulling the tailgate down.
To shut the tailgate, firmly push it upward
until it latches.
After closing the tailgate, pull it back to be
sure it is latched securely.
Some tailgates have an electric latch. If the
battery is disconnected or has low voltage,
the tailgate will not open. The tailgate will
resume operation when the battery is
reconnected or recharged.
Power Release Tailgate
{Warning
Make sure there is no one in the way of
the power tailgate as it is opening and
closing, and keep hands away from the
tailgate hinges when in use. You or
others could be injured if caught in the
path of the power tailgate or tailgate
hinges.

GMC Sierra/Sierra Denali 1500 Owner Manual (GMNA-Localizing-U.S./
Canada/Mexico-15883563) - 2022 - CRC - 11/19/21
24 Keys, Doors, and Windows
Caution
To avoid damage to the tailgate, make
sure the area behind the tailgate is clear
before opening it.
In the case of a dead battery, the tailgate
can be opened manually. Contact your
dealer or Roadside Assistance.
If equipped, to lock or unlock the tailgate,
use the RKE transmitter or the key. See
Remote Keyless Entry (RKE) System
Operation 014.
The vehicle must be in P (Park).
To open the tailgate:
.Pressxtwice quickly on the RKE
transmitter until the tailgate moves.
.Press5on the center stack.
.Press the touch pad on the tailgate
handle after unlocking all doors. Use the
top of the tailgate to pull against if assistance is required. If equipped with
Keyless Access, a locked tailgate can be
opened if the RKE transmitter is within
1 m (3 ft).
To close the tailgate, firmly push it upward
until it latches. Pull it back to be sure it is
latched securely.
Power Tailgate
{Warning
Make sure there is no one in the way of
the power tailgate as it is opening and
closing, and keep hands away from the
tailgate hinges when in use. You or
others could be injured if caught in the
path of the power tailgate or tailgate
hinges.
Caution
To avoid damage to the tailgate, make
sure the area behind the tailgate is clear
before opening it.
If equipped with a power open/close
tailgate, the tailgate can be opened or
closed in several ways. To open the tailgate,
do one of the following:

GMC Sierra/Sierra Denali 1500 Owner Manual (GMNA-Localizing-U.S./
Canada/Mexico-15883563) - 2022 - CRC - 11/19/21
Keys, Doors, and Windows 27
.Pressxtwice quickly on the RKE
transmitter until the tailgate moves. See
Remote Keyless Entry (RKE) System
Operation 014. If equipped with Keyless
Access, the tailgate can be opened if the
RKE transmitter is within 1 m (3 ft)..Press5on the center stack.
.Press the lower touch pad on the tailgate
handle after unlocking all doors. Use the
top of the tailgate to pull against if
assistance is required.
To close the primary tailgate, firmly push it
upward until it latches. Pull it back to be
sure it is latched securely.
To open the inner tailgate, press the upper
touch pad on the tailgate handle after
unlocking all doors. Pull the top of the
tailgate to open.

GMC Sierra/Sierra Denali 1500 Owner Manual (GMNA-Localizing-U.S./
Canada/Mexico-15883563) - 2022 - CRC - 11/19/21
28 Keys, Doors, and Windows
Caution
Do not open the inner tailgate with the
primary tailgate open if there is a hitch
ball or trailer attached. This may damage
the tailgate.
To close the inner tailgate with the primary
tailgate closed, firmly push or pull it upward
until it latches. Pull it back to be sure it is
latched securely.
To close the inner tailgate with the primary
tailgate open:
.Hold the primary tailgate and firmly close
the inner tailgate.
.Raise the inner tailgate so it meets the
primary tailgate and close together at the
same time.
When using the tailgate step as a load stop,
the load must be secured as the load could
shift. See Cargo Tie-Downs 098.
MultiPro Inner Tailgate Enable/Disable
The MultiPro inner tailgate may be equipped
with an enable/disable feature to prevent
the inner tailgate from being opened when
a hitch or other equipment is installed that
could damage the inner tailgate.
To disable the inner tailgate from opening:
ensure that the remote key is within
1 meter (3 ft) of the rear bumper and then
hold the upper touchpad on the tailgate
handle for three seconds. The tail lamps will
flash to alert you that the inner gate has
been disabled. The inner and outer tailgate
can still be operated like a traditional
tailgate, but the inner gate will not be able
to be opened alone. To enable the inner tailgate function, hold
the upper touchpad on the handle for
3 seconds until the tail lamps flash. The
inner tailgate can now be opened separately
from the outer tailgate.
Tailgate Step
{Warning
To avoid personal injury, keep hands
away from the hinges when operating
the tailgate step.
With the primary and inner tailgates open,
the tailgate step can be lowered to access
the pickup bed.
Using the Step
Caution
When using the tailgate as a step, the
load rating is 170 kg (375 lb), which
includes a person and cargo. Overloading
the tailgate step can cause damage to
the tailgate system.