See also:

Automatic Dimming Mirror
If the vehicle has the automatic dimming mirror, the driver outside mirror automatically adjusts for the glare of headlamps behind you. ...

Three-Way Calling
Three-Way Calling must be supported on the cell phone and enabled by the wireless service carrier to work. 1. While on a call press . 2. Say “Three-way call.” 3. Use the dial or call command ...

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 ...