See also:

Power Seat Adjustment
To adjust a power seat, if equipped: - Move the seat forward or rearward by sliding the horizontal control forward or rearward. - Raise or lower the front or rear part of the seat cushion ...

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 ...

Customer Assistance Offices (Mexico)
To contact the Customer Assistance Center (CAC), use the phone numbers listed in this section. Customer assistance is available Monday through Friday, 08:00 to 20:00 hours, and Saturdays from ...