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 vehicle is equipped with the Tire Pressure Monitoring System. If a diagnostics check is needed between e-mails, push OnStar Additional Information , and an Advisor can run a check.

    See also:

    Auto Door Unlock
    This allows selection of which of the doors will automatically unlock when the vehicle is shifted into P (Park). Press SELECT when Auto Door Unlock is highlighted. Turn the Menu knob to selec ...

    Customer Assistance Offices
    Buick encourages customers to call the toll-free number for assistance. However, if a customer wishes to write or e-mail Buick, the letter should be addressed to: United States Buick Customer Assis ...

    Traction Control System (TCS)
    The traction control system limits wheel spin. The system turns on automatically every time the vehicle is started. • To turn off traction control, press and release in front of the shift l ...