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 veh ...

OnStar Additional Information

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 owne ...

See also:

Unlocking the vehicle
WARNING To prevent accidental or unauthorized operation, never leave the Smart Key unattended in the vehicle. Never leave children or animals unattended in the vehicle. The vehicle can be ...

Headlamp Aiming
Headlamp aim has been preset at the factory and should need no further adjustment. However, if your vehicle is damaged in a crash, the headlamp aim may be affected. Aim adjustment to the low-beam h ...

Driving with a Trailer
WARNING When towing a trailer, exhaust gases may collect at the rear of the vehicle and enter if the liftgate, trunk/hatch, or rear-most window is open. Engine exhaust contains Carbon Monoxide ...