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:

    Hoses
    Hoses transport fluids and should be regularly inspected to ensure that there are no cracks or leaks. With a multi-point inspection, your dealer can inspect the hoses and advise if replacement is nee ...

    How to Reinstall Engine Air Cleaner/Filter
    1. Install the air cleaner filter into the air cleaner housing. The outer air cleaner filter seal must be fitted properly in the air cleaner housing. 2. Align the air cleaner housing cover tabs to ...

    California Perchlorate Materials Requirements
    Certain types of automotive applications, such as airbag initiators, seat belt pretensioners, and lithium batteries contained in Remote Keyless Entry transmitters, may contain perchlorate material ...