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 an Advisor can run a check., and an Advisor can run a check.

    See also:

    Add-On Equipment
    When you carry removable items, you may need to put a limit on how many people you can carry inside your vehicle. Be sure to weigh your vehicle before you buy and install the new equipment. Notic ...

    Service Vehicle Messages
    SERVICE AC SYSTEM This message is displayed if there is a problem with the air conditioning system. Take the vehicle to your dealer for service. SERVICE POWER STEERING This message is displa ...

    Chime Volume
    This feature allows you to select the volume level of the chime. Press the customization button until Chime Volume appears on the DIC display. Press the set/reset button once to access the se ...