See also:

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

Using the “Re-dial” Command
1. Press and hold for two seconds. 2. After the tone, say “Re-dial.” Once connected, the person called will be heard through the audio speakers. ...

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 ...