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:

    Engine Coolant Temperature Gauge
    Metric English This gauge shows the engine coolant temperature. If the gauge pointer moves toward the shaded area, the engine is too hot. In eAssist vehicles, the engine coolant warnin ...

    Safety
    All-disc antilock brakes are standard on all Terrazas. Front-wheel-drive models get standard traction control and General Motors' StabiliTrak electronic stability system. Side-impact airbags for t ...

    Single CD (MP3) Player
    To set the time and date: 1. Turn the ignition key to ACC/ACCESSORY or ON/RUN. Press to turn the radio on. 2. Press and the HR, MIN, MM, DD, YYYY (hour, minute, month, day, and year) displ ...