Hill Descent; Control (Hdc) - GMC Sierra 2014 Owner's Manual

9-56 Driving and Operating
Turning the Systems Off
and On
The button for TCS and StabiliTrak
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 button. The traction
off light displays in the instrument
cluster. The appropriate message
will display in the DIC. See Ride
Control System Messages on
page 5-39. 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
the button is pressed, the system
will not turn off until the wheels stop
spinning.
To turn off both TCS and StabiliTrak,
press and hold the button until
the traction off light and the
StabiliTrak OFF light
and stay on in the instrument
cluster, then release. The
appropriate message will display in
the DIC. See Ride Control System
Messages on page 5-39.
To turn TCS and StabiliTrak on
again, press and release the
button. The traction off light
the StabiliTrak OFF light
instrument cluster turn off.
StabiliTrak will automatically turn on
button. The
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) on
page 9-97 or Hill Start Assist (HSA)
on page 9-54.
Adding accessories can affect the
vehicle performance. See
come on
Accessories and Modifications on
page 10-3.

Hill Descent

Control (HDC)

If equipped, HDC can be used
when driving downhill. It sets and
maintains vehicle speed while
and
descending a very steep incline in a
forward or reverse gear.
in the
The HDC switch is on the center
stack, below the climate controls.