See also:

Tire Pressure
If the vehicle is a hybrid, see the hybrid supplement for more information. Tires need the correct amount of air pressure to operate effectively. Notice: Neither tire underinflation nor overinflatio ...

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 ...

Keyless Locking
The doors lock after several seconds if all doors are closed and at least one keyless access transmitter has been removed from the interior of the vehicle. To customize if the doors automat ...