See also:

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 ...

Ending a Call
Press to end a call. ...

Auto Fan Speed
This will allow you to select the automatic fan speed. This feature sets the climate control fan speed to maintain the interior temperature. Press the MENU/SELECT knob when Auto Fan Speed is highl ...