GMC Sierra Owner's Manual page 250

the vehicle on the intended path. Trailer
Sway Control (TSC) is also on automatically
when the vehicle is started. See Trailer Sway
Control (TSC) 0 292.
If cruise control is being used and traction
control or StabiliTrak/ESC begins to limit
wheel spin, cruise control will disengage.
Cruise control may be turned back on when
road conditions allow.
Both systems come on automatically when
the vehicle is started and begins to move.
The systems may be heard or felt while
they are operating or while performing
diagnostic checks. This is normal and does
not mean there is a problem with the
vehicle.
It is recommended to leave both systems on
for normal driving conditions, but it may be
necessary to turn TCS off if the vehicle gets
stuck in sand, mud, ice, or snow. See If the
Vehicle Is Stuck 0 222 and Turning the
Systems Off and On later in this section.
When the transfer case (if equipped) is in
Four-Wheel Drive Low, the stability system
is automatically disabled, comes on, and
the appropriate message will appear on the
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.
Driving and Operating
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.
249
comes on and stays
Caution
.
displays in the
. The traction off light