Retrieve My Number

1. Push “OnStar ready.” 2. Say “My Number.” System responds: “Your OnStar Hands-Free Calling number is.”. System responds:

“OnStar ready.” 2. Say “My Number.” System responds: “Your OnStar Hands-Free Calling number is.”

    See also:

    Maintenance Replacement Parts
    Replacement parts identified below by name, part number, or specification can be obtained from your dealer. If your vehicle has a diesel engine, see the Duramax diesel supplement for more informa ...

    Maintenance when Trailer Towing
    The vehicle needs service more often when pulling a trailer. See Maintenance Schedule on page 11‑3. Things that are especially important in trailer operation are automatic transmission fluid, en ...

    Vehicle and Power Issues
    OnStar services require a vehicle electrical system, wireless service, and GPS satellite technologies to be available and operating for features to function properly. These systems may not operate if ...