OnStar

See also:

Driving on Grades
Reduce speed and shift to a lower gear before starting down a long or steep downgrade. If the transmission is not shifted down, the brakes might have to be used so much that they would get hot and n ...

Automatic Transmission
If the vehicle is a hybrid, see the hybrid supplement for more information. The vehicle has a Hydra-Matic® 6L80 automatic transmission, and has an electronic shift position indicator within the ins ...

Power Reclining Seatbacks
To adjust a power seatback, if equipped: - Tilt the top of the vertical control rearward to recline. - Tilt the top of the vertical control forward to raise. ...