See also:

Sensor
The solar sensor, located on top of the instrument panel near the windshield, monitors the solar heat. The climate control system uses the sensor information to adjust the temperature, fan sp ...

Manual Operation
(Power): Press to turn the fan on or off. (Fan Control): Press to increase or decrease the fan speed. The fan speed setting appears on the main display. Pressing either button cancels auto ...

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 ...