OnStar Services
See also:
StabiliTrak® System
The StabiliTrak system assists with directional control of the vehicle in
difficult driving conditions.
The system is on when the vehicle is started.
- To turn off both Traction Control and Sta ...
Manual Operation
(Power): Press to turn the climate control system on or off.
(Fan Control): Press to increase or decrease the fan speed. Pressing
either button cancels automatic operation and the system goes into ...
Hill Start Assist (HSA)
Non-hybrid vehicles with StabiliTrak have a Hill Start Assist (HSA) feature,
which may be useful when the vehicle is stopped on a grade. This feature is designed
to prevent the vehicle from rollin ...






