Tire Inspection

We recommend that the tires, including the spare tire, if the vehicle has one, be inspected for signs of wear or damage at least once a month.

Replace the tire if:

► The indicators at three or more places around the tire can be seen.

► There is cord or fabric showing through the tire's rubber.

► The tread or sidewall is cracked, cut, or snagged deep enough to show cord or fabric.

► The tire has a bump, bulge, or split.

► The tire has a puncture, cut, or other damage that cannot be repaired well because of the size or location of the damage.

    See also:

    Warranty
    OnStar equipment may be warranted as part of the new-vehicle limited warranty. The manufacturer of the vehicle furnishes detailed warranty information. ...

    Speedometer and Odometer
    The speedometer shows the vehicle speed in both miles per hour (mph) and kilometers per hour (km/h). The odometer shows how far the vehicle has been driven, in either miles or kilometers. This ...

    Volume Control
    VOL/ (Volume/Power): Turn to adjust the volume. (Phone/Mute): For vehicles with OnStar®, press and hold to mute the infotainment system. Press and hold again, or turn the VOL/ knob t ...