OnStar Services

See also:

When to Add Engine Oil
If the oil is below the L mark for the L6 engine or the cross-hatched area at the tip of the dipstick for the V8 engine, you will need to add at least one quart/liter of oil. But you must use the ...

Remote Vehicle Start
If available, this feature allows the engine to be started from outside the vehicle. The button will be on the RKE transmitter if the vehicle has remote start. Laws in some local communitie ...

California Fuel Requirements
If the vehicle is certified to meet California Emissions Standards, it is designed to operate on fuels that meet California specifications. See the underhood emission control label. If this fuel i ...