GMC Chevrolet Silverado 2500HD 2021 Owner's Manual page 244

Driver Information Center (DIC). Both
traction control and StabiliTrak/ESC are
automatically disabled in this condition.
The indicator light for both systems is in the
instrument cluster. This light will:
Flash when TCS is limiting wheel spin.
Flash when StabiliTrak/ESC is activated.
Turn on and stay on when either system
is not working.
If either system fails to turn on or to
activate, a message displays in the Driver
Information Center (DIC), and
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
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.
Do not repeatedly brake or accelerate
heavily when TCS is off. The vehicle
comes on
driveline could be damaged.
To turn off only TCS, press and release
The traction off light
instrument cluster. The appropriate message
will display in the DIC. To turn TCS on again,
press and release
displayed in the instrument cluster will
turn off.
comes on and stays
Caution
.
displays in the
. The traction off light
Driving and Operating
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) 0 285 or
Hill Start Assist (HSA) 0 242.
Adding accessories can affect the vehicle
performance. See Accessories and
Modifications 0 302.
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