See also:

Battery Power Protection
The battery saver feature is designed to protect the vehicle's battery. If some interior lamps are left on and the ignition is turned off, the battery rundown protection system automatically tu ...

Transmission
Automatic Transmission P: Park R: Reverse N: Neutral D: Drive Manual Mode Move the selector lever from D (Drive) to the left. Press the shift lever forward (+) to upshift or rearward (&# ...

TTY Users
OnStar has the ability to communicate to the deaf, hard-of-hearing, or speech-impaired customers while in the vehicle. The available dealer-installed TTY system can provide in-vehicle acce ...