Hill Descent Control (Hdc) - GMC Silverado 2022 Manual

Chevrolet/GMC Silverado/Sierra/Sierra Denali 2500 HD/3500 HD Owner
Manual (GMNA-Localizing-MidEast-16504136) - 2023 - CRC - 6/8/22
238 Driving and Operating
If either system fails to turn on or to
activate, a message displays in the Driver
Information Center (DIC), and comes on
and stays on to indicate that the system is
inactive and is not assisting the driver in
maintaining control. The vehicle is safe to
drive, but driving should be adjusted
accordingly.
If comes on and stays on:
1. Stop the vehicle.
2. Turn the engine off and wait 15 seconds.
3. Start the engine.
Drive the vehicle. If comes on and stays
on, the vehicle may need more time to
diagnose the problem. If the condition
persists, see your dealer.
Turning the Systems Off and On
The button for TCS and StabiliTrak/ESC is on
the center stack.
Caution
Do not repeatedly brake or accelerate
heavily when TCS is off. The vehicle
driveline could be damaged.
To turn off only TCS, press and release
The traction off light displays in the
instrument cluster. The appropriate message
will display in the DIC. To turn TCS on again,
press and release . The traction off light
displayed in the instrument cluster will
turn off.
If TCS is limiting wheel spin when
pressed, the system will not turn off until
the wheels stop spinning.
To turn off both TCS and StabiliTrak/ESC,
press and hold until the traction off light
and the StabiliTrak/ESC OFF light
come on and stay on in the instrument
cluster, then release. The appropriate
message will display in the DIC.
To turn TCS and StabiliTrak/ESC on again,
press and release . The traction off light
and the StabiliTrak/ESC OFF light
the instrument cluster turn off.
StabiliTrak/ESC will automatically turn on if
the vehicle exceeds 56 km/h (35 mph).
Traction control will remain off.
The vehicle has a Trailer Sway Control (TSC)
feature and a Hill Start Assist (HSA) feature.
See Trailer Sway Control (TSC) 0 281 or
.
Hill Start Assist (HSA) 0 236.
Adding accessories can affect the vehicle
performance. See Accessories and
Modifications 0 285.

Hill Descent Control (HDC)

If equipped, Hill Descent Control (HDC) sets
and maintains vehicle speed while driving
is
down steep grades in a forward or reverse
gear. The HDC switch is on the center stack.
Press to enable or disable HDC. Vehicle
speed must be below 50 km/h (31 mph).
When enabled, the HDC light displays on
in
the instrument cluster.