See also:

Returning the Seatback to the Upright Position
To return the seatback to the upright position: 1. Open the liftgate to access the controls for the seat. 2. Raise the seatback to the upright position. WARNING If either seatback is not lock ...

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 ...

Jump Starting
For more information about the vehicle battery, see Battery  . If the vehicle is a hybrid, see the hybrid supplement for more information. If the vehicle's battery has run down, you may wan ...