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:

    Buying New Tires
    GM has developed and matched specific tires for the vehicle. The original equipment tires installed were designed to meet General Motors Tire Performance Criteria Specification (TPC Spec) system rati ...

    Passing
    Passing another vehicle on a two-lane road can be dangerous. To reduce the risk of danger while passing: • Look down the road, to the sides, and to crossroads for situations that might affect a ...

    Power Steering
    If power steering assist is lost because the engine stops or the system is not functioning, the vehicle can be steered but it will take more effort. ...