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:

    Trailer Towing
    Three important considerations have to do with weight: • The weight of the trailer • The weight of the trailer tongue • The total weight on the vehicle's tires ...

    Other Rainy Weather Tips
    Besides slowing down, other wet weather driving tips include: ○ Allow extra following distance. ○ Pass with caution. ○ Keep windshield wiping equipment in good shape. ○ Kee ...

    Filling the Tank
    If the vehicle has a diesel engine, see the Duramax diesel supplement for more information. WARNING Fuel vapor burns violently and a fuel fire can cause bad injuries. To help avoid injuries to you ...