See also:

If No Steam Is Coming from the Engine Compartment
If an engine overheat warning is displayed but no steam can be seen or heard, the problem might not be too serious. Sometimes the engine can get a little too hot when the vehicle: • Climb ...

Power Lumbar
Your vehicle has power lumbar on the driver’s and front passenger’s seats. The seatback lumbar support can be adjusted by moving the control located on the outboard side of the seat cushi ...

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 chan ...