OnStar Services

See also:

When to Add Engine Oil
If the oil is below the cross-hatched area at the tip of the dipstick, add 1 L (1 qt) of the recommended oil and then recheck the level. See “Selecting the Right Engine Oil” in this section for ...

Headphones
A. Battery Cover B. Channel 1 or 2 Switch C. Power Button D. Volume Control E. Power Indicator Light RSE includes two 2-channel wireless headphones. Channel 1 is dedicated to the DVD player, ...

Starting the Engine
If the vehicle has a diesel engine, see the Duramax diesel supplement for more information. If the vehicle is a hybrid, see the hybrid supplement for more information. Notice: Do not try to shift to ...