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 StabiliTrak, press and hold 
until
and
illuminate
and the appropriate DIC message displays. See Vehicle Messages.
- Press 
again to turn on both systems.
For more information, see StabiliTrak® System.
See also:
Starting the Vehicle Messages
PRESS BRAKE TO START VEHICLE
This message is displayed when attempting to start the vehicle without first
pressing the brake pedal.
SERVICE KEYLESS START SYSTEM
This message is displayed if ...
Air Quality Sensor
For vehicles with an air quality
sensor, the climate control system
adjusts to limit some exhaust fumes
from being pulled inside your
vehicle.
Press the AUTO button on the
climate control t ...
Diagnostics
OnStar Vehicle Diagnostics will
perform a vehicle check every
month. It will check the engine,
transmission, antilock brakes, and
major vehicle systems. It also
checks the tire pressures, if ...