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 . PRESS BRAKE PEDAL TO RELEASE PARK BRAKE This message is displayed if you attempt to release the elec ...

Drunk Driving
WARNING Drinking and then driving is very dangerous. Your reflexes, perceptions, attentiveness, and judgment can be affected by even a small amount of alcohol. You can have a serious — or even f ...