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:

    Instantaneous Economy and Active Fuel Management™ Indicator
    If the vehicle has this display, press the trip/fuel button until INST ECON V8 displays. This display shows the current fuel economy at a particular moment and will change frequently as driving condit ...

    Features
    For most shoppers, the key feature will be the standard third-row seat. It has adequate room for children, but adults will not find it accommodating for more than a short trip. An optional second- ...

    Listing Stored Numbers
    The list command will list all stored numbers and name tags. Using the “List” Command 1. Press and hold for two seconds. 2. Say “Directory.” 3. Say “Hands-Free Calling.” 4. Say “List ...