OnStar Services

See also:

Tire Terminology and Definitions
Air Pressure: The amount of air inside the tire pressing outward on each square inch of the tire. Air pressure is expressed in pounds per square inch (psi) or kilopascal (kPa). Accessory Weight: ...

Owner Checks and Services
At Each Fuel Stop Check the engine oil level. See Engine Oil . Once a Month Check the tire inflation pressures. See Tire Pressure . Inspect the tires for wear. See Tire Inspection . Che ...

Shifting Out of Park (P)
Your vehicle has an automatic transmission shift lock control system. You have to fully apply the regular brakes first and then press the shift lever button before you can shift from PARK (P) when ...