See also:

Towing
Consult your dealer or a professional towing service if you need to have your disabled vehicle towed. If you want to tow your vehicle behind another vehicle for recreational purposes (such as behi ...

How to Check
Use a good quality pocket-type gauge to check tire pressure. Proper tire inflation cannot be determined by looking at the tire. Check the tire inflation pressure when the tires are cold, meaning t ...

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 ...