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 the battery is discharged or disconnected.

    See also:

    Turn Signals When Towing a Trailer
    The turn signal indicators on the instrument panel flash whenever signaling a turn or lane change. Properly hooked up, the trailer lamps also flash, telling other drivers the vehicle is turning, ...

    Tire Rotation and Required Services Every 12 000 km/ 7,500 mi
    Rotate the tires, if recommended for the vehicle, and perform the following services. See Tire Rotation  . Check engine oil level and oil life percentage. If needed, change engine oil an ...

    Playing a CD
    Selecting a CD Track Tracks can be selected using the seek buttons, TUNE/TONE knob, or MENU/SELECT knob. To use the seek buttons: Press to go to the start of the current track, if more than ...