When to Check

Check the tires once a month or more.

Do not forget the spare tire, if the vehicle has one.

SeeFull-Size Spare Tire on page 10‑91 for additional information.

    See also:

    Bluetooth®
    The Bluetooth system allows users with a Bluetooth-enabled cell phone to make and receive hands-free calls using the vehicle audio system and controls. The Bluetooth-enabled cell phone must be pair ...

    Electronic Transfer Case
    The transfer case knob is located next to the steering column. Use the dial to shift into and out of four-wheel drive. ...

    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 v ...