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 ...

Exterior Lamps Off Reminder
A warning chime sounds if the driver door is opened while the ignition is off and the exterior lamps are on. ...

Fuel Gauge
When the ignition is on, the fuel gauge tells you about how much fuel you have left in your tank. An arrow on the fuel gauge indicates the side of the vehicle the fuel door is on. When the fue ...