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 Advisor can run a check., and an Advisor can run a check.

    See also:

    Front Turn Signal/Parking/Side Marker Lamps (Base and Up-Level)
    To replace the front turn signal, parking lamp, or sidemarker lamp: 1. For the driver side bulb, remove the windshield washer bottle filler neck by firmly pulling it straight up and out of the bottle ...

    Engine Coolant Temperature Warning Light
    This light comes on briefly while starting the vehicle. If it does not, have the vehicle serviced by the dealer/retailer. If the system is working normally the indicator light goes off. Noti ...

    Fuel Gauge
    When the ignition is on, the fuel gauge tells you about how much fuel you have left in your tank. An arrow on the fuel gauge indicates the side of the vehicle the fuel door is on. When the fue ...