OnStar

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Tire Designations
Tire Size The following is an example of a typical passenger vehicle tire size. (A) Passenger (P—Metric) Tire: The United States version of a metric tire sizing system. The letter P as ...

Tire Messages
SERVICE TIRE MONITOR SYSTEM This message displays if there is a problem with the Tire Pressure Monitor System (TPMS). See Tire Pressure Monitor Operation for more information. TIRE LEARNING ACT ...

Lower Anchors
Lower Anchors Lower anchors (A) are metal bars built into the vehicle. There are two lower anchors for each LATCH seating position that will accommodate a child restraint with lower attac ...