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:

    Removing the Spare Tire and Tools
    To access the spare tire and tools: 1. Open the trunk. See Trunk . 2. Lift the load floor. A. Retainer Nut B. Tool Bag Tether C. Tool Bag D. Spare Tire 3. Turn the retainer nut (A) counter ...

    Passenger Safety Belt Reminder Light
    When the vehicle is started, this light flashes and a chime may come on to remind front passengers to fasten their safety belt. Then the light stays on solid until the belt is buckled. Fo ...

    Rainsense™ II Wipers
    If the vehicle has this feature, the moisture sensor is mounted on the interior of the windshield beside the rearview mirror and is used to automatically operate the wipers. This system operates ...