GMC 2012 Canyon Owner's Manual page 226

it may be necessary to turn the TCS
portion of the system off if the
vehicle is stuck in sand, mud, ice,
or snow, and it is necessary to
rock the vehicle to attempt to free
it. If traction control is turned off,
only the brake-traction control
portion of traction control will work.
The engine speed management will
be disabled. In this mode, engine
power is not reduced automatically
and the drive wheels can spin more
freely. This can cause the
brake-traction control to activate
constantly. See
.
The TCS/StabiliTrak light will flash
on the instrument panel cluster
when the TCS system or StabiliTrak
is both on and activated.
The TCS/StabiliTrak button is
located on the instrument panel.
To turn off TCS and StabiliTrak,
press and hold the TCS/StabiliTrak
button until the TRAC OFF and
STAB SYS OFF messages come on
the DIC and the StabiliTrak Off light
comes on the instrument panel. To
turn TCS and StabiliTrak back on,
press and release the TCS/
StabiliTrak button.
When the TCS or StabiliTrak system
is turned off, the StabiliTrak Off light
and the appropriate TRAC OFF or
STAB SYS OFF message will be
displayed on the DIC. The vehicle
will still have brake-traction control
when TCS or StabiliTrak is off, but
will not be able to use the engine
speed management system. The
TCS/StabiliTrak light flashes when
either system is actively working.
See
for more information.
Vehicles with a limited-slip rear axle
can give more traction on snow,
mud, ice, sand or gravel. It works
like a standard axle most of the
time, but when traction is low, this
feature allows the drive wheel with
the most traction to move the
vehicle.