See also:

Buying New Tires
GM has developed and matched specific tires for the vehicle. The original equipment tires installed were designed to meet General Motors Tire Performance Criteria Specification (TPC Spec) system r ...

Testing the Alarm
To test the alarm: 1. Lower the driver window and open the driver door. 2. Press lock on the RKE transmitter. 3. Close the door and wait for the security light to go out. 4. Reach in through the w ...

Transferring Service
Push to request account transfer eligibility information. The Advisor can assist in canceling or removing account information. If OnStar receives information that vehicle ownership has changed, OnSta ...