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 ...

Brake System Messages
BRAKE FLUID LOW This message is displayed when the brake fluid level is low. See Brake Fluid. BRAKES OVERHEATED This message is displayed when the brakes are becoming overheated. You may ...

Dome Lamps
The dome lamps are located in the overhead console. They come on when any door is opened and turn off after all the doors are closed. Turn the instrument panel brightness knob located below the dome ...