OnStar Services
See also:
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. ...
Driving on Grades
Notice: Do not tow on steep continuous grades
exceeding 6 miles (9.6 km). Extended, higher
than normal engine and transmission temperatures
may result and damage the vehicle. Frequent
stops ar ...
Radio Messages
CAL ERR (Calibration Error): The audio system
has been calibrated for your vehicle from the
factory. If CAL ERR displays, it means that the
radio has not been configured properly for
the vehicle a ...
