See also:

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 the v ...

Theft-Deterrent Feature
TheftLock® is designed to discourage theft of the vehicle's radio by learning a portion of the Vehicle Identification Number (VIN). The radio does not operate if it is stolen or moved to a di ...

Steering Wheel Adjustment
To adjust the steering wheel: 1. Pull the lever down. 2. Move the steering wheel up or down. 3. Pull or push the steering wheel closer or away from you. 4. Pull the lever up to lock the stee ...