Locking Rear Axle; Cruise Control - GMC 2012 Sierra Owner's Manual

9-58 Driving and Operating
Non-hybrid vehicles with StabiliTrak
have a Trailer Sway Control (TSC)
feature. See Trailer Sway Control
(TSC) on page 9 105.
Non-hybrid vehicles with StabiliTrak
have a Hill Start Assist (HSA)
feature. See Hill Start Assist (HSA)
on page 9 54.
Adding non dealer accessories can
affect the vehicle's performance.
See Accessories and Modifications
on page 10 3.

Locking Rear Axle

Vehicles with a locking 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 will
allow the rear wheel with the most
traction to move the vehicle.

Cruise Control

WARNING
Cruise control can be dangerous
where you cannot drive safely at
a steady speed. So, do not use
the cruise control on winding
roads or in heavy traffic.
Cruise control can be dangerous
on slippery roads. On such roads,
fast changes in tire traction can
cause excessive wheel slip, and
you could lose control. Do not use
cruise control on slippery roads.
For vehicles with cruise control, a
speed of about 40 km/h (25 mph)
or more can be maintained
without keeping your foot on the
accelerator. Cruise control does not
work at speeds below about 40 km/h
(25 mph).
I n f o r ma t i o n P r o v i d e d b y :
When the brakes are applied, cruise
control is turned off.
For vehicles with an Allison or
Hydra Matic 6 speed automatic
transmission, see Grade Braking
under Tow/Haul Mode on page 9 39
for an explanation of how cruise
control interacts with the Range
Selection Mode, tow/haul and grade
braking systems.
For vehicles with the StabiliTrak
system that begins to limit wheel
spin while you are using cruise
control, the cruise control will
automatically disengage. See
®
StabiliTrak System on page 9 55.
When road conditions allow the
cruise control to be safely used
again, it can be turned back on.