See also:

When the System Does Not Seem To Work Properly
The rear vision camera system might not work properly or display a clear image if: • The RVC is turned off. See “Turning the Rear Camera System On or Off” earlier in this section. • It is d ...

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 vehic ...

Parking Brake
Set the parking brake by holding the regular brake pedal down, then pushing down the parking brake pedal. If the ignition is on, the brake system warning light will come on. See Brake System Warni ...