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:

    Tire Sealant
    Read and follow the safe handling instructions on the label adhered to the compressor. Check the tire sealant expiration date on the sealant canister. The sealant canister should be replaced ...

    Verify Minutes and Expiration
    Push and say “minutes” then “verify” to check how many minutes remain and their expiration date. ...

    Selective Ride Control
    The vehicle may have a ride control system called Selective Ride Control. The system provides the following performance benefits: • Reduced Impact Harshness • Improved Road Isolation • ...