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:

    Anti-theft Alarm System
    This vehicle may have a content theft-deterrent alarm system. This is the security light. To arm the theft-deterrent system: 1. Open the door. 2. Lock the door with the Remote Keyless Entry (RKE ...

    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 ...

    Coverage
    Services are provided up to 5 years/160 000 km (100,000 mi), whichever comes first. In the U.S., anyone driving the vehicle is covered. In Canada, a person driving the vehicle without permission from ...