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:

    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 vehic ...

    Pairing
    A Bluetooth enabled cell phone must be paired to the Bluetooth system and then connected to the vehicle before it can be used. See the cell phone manufacturer's user guide for Bluetooth functions befo ...

    Battery
    Refer to the replacement number on the original battery label when a new battery is needed. WARNING Battery posts, terminals, and related accessories contain lead and lead compounds, chemicals k ...