2024 CHEVROLET SILVERADO ECU

Chevrolet Silverado 2500 HD/3500 HD Owner Manual (GMNA-Localizing-U.
S./Canada/Mexico-16908339) - 2024 - CRC - 12/5/22
6 Introduction
1. Tow/Haul Mode (On Some Models). SeeDriver Mode Control 0232.
Automatic Transfer Case Control (If
Equipped). See Four-Wheel Drive 0221.
Driver Mode Control 0232 (If Equipped).
2. Air Vents 0190.
3. Turn Signal Lever. See Turn and
Lane-Change Signals 0142.
Windshield Wiper/Washer 0101.
4. Head-Up Display (HUD) 0130 (If
Equipped).
5. Instrument Cluster (Base Level) 0107 or
Instrument Cluster (Uplevel) 0108.
6. Shift Lever. See Automatic Transmission
0 218.
Range Selection Mode. See Manual Mode
0 220.
7. Light Sensor. See Automatic Headlamp
System 0140.
Vehicle Alarm System. See Vehicle
Security 029.
8. Infotainment Controls. See Overview
(Uplevel Radio) 0150 or
Overview (Base Radio) 0149.
9. Upper Glove Box. See Glove Box094.
10. Lower Glove Box. See Glove Box094. 11.
Climate Control Systems 0185 (If
Equipped).
Dual Automatic Climate Control System
0 187 (If Equipped).
12. Park Assist Switch (If Equipped). See Assistance Systems for Parking or Backing
0247.
Traction Control/Electronic Stability
Control 0230.
Hazard Warning Flashers 0141.
Hill Descent Control Switch (If Equipped).
See Hill Descent Control (HDC) 0231.
Power Assist Steps 028 (If Equipped).
Power Release Tailgate (If Equipped). See
Tailgate 021.
Express Window Down Button (If
Equipped). See Power Windows 039.
Tow/Haul Mode 0221 (On Some
Models).
Exhaust Brake (If Equipped). See Duramax
Diesel Supplement.
Power Take-Off (PTO) (If Equipped). See
Duramax Diesel Supplement.
13. Power Outlet (Alternating Current) (If Equipped). See Power Outlets0102.
14. Power Outlet (Direct Current). See Power
Outlets 0102. 15.
USB Port 0158.
16. Trailer Brake Control Panel (If Equipped). See“Integrated Trailer Brake Control
System” underTowing Equipment 0278.
17. ENGINE START/STOP. See Ignition
Positions 0211.
18. Steering Wheel Controls 0151.
Driver Information Center (DIC) Controls.
See Driver Information Center (DIC) (Base
Level) 0126 or
Driver Information Center (DIC) (Uplevel)
0 128.
19. Horn 0101.
20. Hood Release. See Hood0305.
21. Steering Wheel Adjustment 0100 (Out
of View).
22. Cruise Control 0233.
Adaptive Cruise Control (Camera) 0235
(If Equipped).
Forward Collision Alert (FCA) System
0 257 (If Equipped).
Heated Steering Wheel 0100 (If
Equipped).
23. Data Link Connector (DLC) (Out of View). SeeMalfunction Indicator Lamp (Check
Engine Light) 0117.
24. Electric Parking Brake 0228.

Chevrolet Silverado 2500 HD/3500 HD Owner Manual (GMNA-Localizing-U.
S./Canada/Mexico-16908339) - 2024 - CRC - 12/5/22
Introduction 9
1.Head-Up Display (HUD) 0130 (If
Equipped).
2. Air Vents 0190.
3. Turn Signal Lever. See Turn and
Lane-Change Signals 0142.
Windshield Wiper/Washer 0101.
4. Instrument Cluster (Base Level) 0107 or
Instrument Cluster (Uplevel) 0108.
5. Shift Lever. See Automatic Transmission
0 218.
Range Selection Mode. See Manual Mode
0 220.
6. Infotainment System. See Overview
(Uplevel Radio) 0150 or
Overview (Base Radio) 0149.
7. Light Sensor. See Automatic Headlamp
System 0140.
Vehicle Alarm System. See Vehicle
Security 029.
8. Upper Glove Box. See Glove Box094.
9. Lower Glove Box. See Glove Box094.
10. Upper Glove Box Button. See Glove Box
0 94.
11. Power Release Tailgate (If Equipped). See Tailgate 021.
Hazard Warning Flashers 0141. Traction Control/Electronic Stability
Control
0230.
Hill Descent Control Switch (If Equipped).
See Hill Descent Control (HDC) 0231.
Power Assist Steps 028 (If Equipped).
Express Window Down Button (If
Equipped). See Power Windows 039.
Tow/Haul Mode 0221 (On Some
Models).
Exhaust Brake (If Equipped). See Duramax
Diesel Supplement.
Power Take-Off (PTO) (If Equipped). See
Duramax Diesel Supplement.
12. USB Port 0158.
13. Climate Control Systems 0185 (If
Equipped).
Dual Automatic Climate Control System
0 187 (If Equipped).
Heated and Ventilated Front Seats 050
(If Equipped).
14. Front Center Console Storage.
15. Cupholders 094.
16. Trailer Brake Control Panel (If Equipped). See“Integrated Trailer Brake Control
System” underTowing Equipment 0278. 17. ENGINE START/STOP. See
Ignition
Positions 0211.
18. Steering Wheel Controls 0151.
Driver Information Center (DIC) Controls.
See Driver Information Center (DIC) (Base
Level) 0126 or
Driver Information Center (DIC) (Uplevel)
0 128.
19. Horn 0101.
20. Steering Wheel Adjustment 0100 (Out
of View).
21. Hood Release. See Hood0305.
22. Cruise Control 0233.
Adaptive Cruise Control (Camera) 0235
(If Equipped).
Forward Collision Alert (FCA) System
0 257 (If Equipped).
Heated Steering Wheel 0100 (If
Equipped).
23. Fog Lamps 0142 (If Equipped).
Instrument Panel Illumination Control
0 144.
Exterior Cargo Lamps 0144.
Exterior Lamp Controls 0138.
Task Lighting 0143 (If Equipped).

Chevrolet Silverado 2500 HD/3500 HD Owner Manual (GMNA-Localizing-U.
S./Canada/Mexico-16908339) - 2024 - CRC - 12/5/22
Keys, Doors, and Windows 11
Keys, Doors, and
Windows
Keys and Locks
Keys . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
Remote Key . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
Remote Key Operation . . . . . . . . . . . . . . . . . . 12
Remote Vehicle Start . . . . . . . . . . . . . . . . . . . 18
Door Locks . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
Power Door Locks . . . . . . . . . . . . . . . . . . . . . . 20
Delayed Locking . . . . . . . . . . . . . . . . . . . . . . . . 20
Automatic Door Locks . . . . . . . . . . . . . . . . . . 20
Lockout Protection . . . . . . . . . . . . . . . . . . . . . 20
Safety Locks . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
Doors
Tailgate . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
Transporting Items That CanCatch Fire . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
Power Assist Steps . . . . . . . . . . . . . . . . . . . . . 28
Vehicle Security
Vehicle Security . . . . . . . . . . . . . . . . . . . . . . . . 29
Vehicle Alarm System . . . . . . . . . . . . . . . . . . 29
Steering Column Lock . . . . . . . . . . . . . . . . . . 30
Immobilizer . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30
Immobilizer Operation . . . . . . . . . . . . . . . . . . 30
Exterior Mirrors
Convex Mirrors . . . . . . . . . . . . . . . . . . . . . . . . . 31 Manual Mirrors . . . . . . . . . . . . . . . . . . . . . . . . . 31
Trailer-Tow Mirrors . . . . . . . . . . . . . . . . . . . . . 32
Power Mirrors . . . . . . . . . . . . . . . . . . . . . . . . . . 32
Folding Mirrors . . . . . . . . . . . . . . . . . . . . . . . . . 33
Heated Mirrors . . . . . . . . . . . . . . . . . . . . . . . . . 34
Automatic Dimming Mirror . . . . . . . . . . . . . 34
Blind Spot Mirrors . . . . . . . . . . . . . . . . . . . . . . 34
Reverse Tilt Mirrors . . . . . . . . . . . . . . . . . . . . . 35
Interior Mirrors
Interior Rearview Mirrors . . . . . . . . . . . . . . . 35
Manual Rearview Mirror . . . . . . . . . . . . . . . . 35
Automatic Dimming Rearview Mirror . . . 35
Rear Camera Mirror . . . . . . . . . . . . . . . . . . . . . 35
Truck Bed Camera Rearview Mirror . . . . . 38
Windows
Windows . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38
Power Windows . . . . . . . . . . . . . . . . . . . . . . . . 39
Rear Windows . . . . . . . . . . . . . . . . . . . . . . . . . . 41
Sun Visors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41
Roof
Sunroof . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41
Keys and Locks
Keys
{Warning
Leaving children in a vehicle with a
remote key 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 remote key 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 a remote key.

Chevrolet Silverado 2500 HD/3500 HD Owner Manual (GMNA-Localizing-U.
S./Canada/Mexico-16908339) - 2024 - CRC - 12/5/22
Keys, Doors, and Windows 21
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 key.
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.

Chevrolet Silverado 2500 HD/3500 HD Owner Manual (GMNA-Localizing-U.
S./Canada/Mexico-16908339) - 2024 - CRC - 12/5/22
22 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 remote key or the key. See Remote
Key Operation 012.
The vehicle must be in P (Park).
To open the tailgate:
.Pressxtwice quickly on the remote
key 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 remote key 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:

Chevrolet Silverado 2500 HD/3500 HD Owner Manual (GMNA-Localizing-U.
S./Canada/Mexico-16908339) - 2024 - CRC - 12/5/22
Keys, Doors, and Windows 25
To open the primary tailgate:
.Pressxtwice quickly on the remote
key until the tailgate moves. See Remote
Key Operation 012. If equipped with
Keyless Access, the tailgate can be
opened if the remote key 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.

Chevrolet Silverado 2500 HD/3500 HD Owner Manual (GMNA-Localizing-U.
S./Canada/Mexico-16908339) - 2024 - CRC - 12/5/22
26 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 097.
MultiFlex Inner Tailgate Enable/Disable
The MultiFlex 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 seven 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
seven seconds until the tail lamps flash. The
inner tailgate can now be opened separately
from the outer tailgate.
Tailgate Step (Step Mode)
{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.

Chevrolet Silverado 2500 HD/3500 HD Owner Manual (GMNA-Localizing-U.
S./Canada/Mexico-16908339) - 2024 - CRC - 12/5/22
28 Keys, Doors, and Windows
Alternate Method
When applying any load to the tailgate,
distribute the weight evenly across the
width of the tailgate. This applies to all
tailgate types.
.Use a load-distributing member (1).
.Secure the ramp to the bumper (2).
Transporting Items That Can
Catch Fire
{Warning
To avoid personal injury and/or vehicle
damage when transporting items that
can catch fire, such as leaves, mulch, hay,
or cardboard, in the truck bed:
.Make sure items are securely
contained inside the truck bed. Never
allow them to hang over the sides or
fall in between the truck bed and
the cab.
.Never place items between the cab
and the truck bed. They could touch
hot exhaust parts and ignite.
{Warning
Keep cigarettes, sparks, and other ignition
sources away from the area between the
bed of the truck and cab. They could fall
onto the fuel system below and start a
fire. You or others could be injured and/
or the vehicle damaged.
Power Assist Steps
{Warning
To avoid personal injury or property
damage, before entering or exiting the
vehicle, be sure the power assist step is
fully extended. Do not step on the power
assist step while it is moving. Never place
hands or other body parts between the
extended power assist step and the
vehicle.
If equipped, the power assist steps will
deploy when the door is opened and
automatically retract three seconds after the
door is closed. The power assist steps will
retract immediately if the vehicle starts
moving. Check the step position before
exiting the vehicle.
Disable the power assist steps before jacking
or placing any object under the vehicle.
Too much ice buildup may prevent
deployment of the power assist steps. If this
happens, disable the power assist steps,
clear the ice, then enable the assist steps
and confirm normal function prior to use.