See also:

Exterior Mirrors
Exterior Mirrors Vehicles with outside power mirrors and foldaway mirrors have controls located on the driver door. 1. Press (A) or (B) to select the driver or passenger side mirror. 2. Press t ...

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 vehic ...

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 access to all of ...