See also:

Total Weight on the Vehicle's Tires
Be sure the vehicle's tires are inflated to the inflation pressures found on the Certification label on the driver door or see Vehicle Load Limits   for more information. Make sure n ...

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 ...

Door Locks (Sedan and Wagon)
WARNING! Unlocked doors can be dangerous. - Passengers, especially children, can easily open the doors and fall out of a moving vehicle. When a door is locked, the handle will not open i ...