OnStar Services

See also:

Traction Control System (TCS) Warning Light
For vehicles with a Traction Control System (TCS) and StabiliTrak® warning light, this light comes on briefly when the engine is started. If it does not, have the vehicle serviced by you ...

Adding Equipment to the Outsideof Your Vehicle
Things you might add to the outside of your vehicle can affect the airflow around it. This may cause wind noise and affect windshield washer performance. Check with your dealer before adding equip ...

Folding the Seatback
Either side of the seatback can be folded down for more cargo space. Fold a seatback only when the vehicle is not moving. Notice: Folding a rear seat with the safety belts still fastened may ...