See also:

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 ...

Transferring Service
Push to request account transfer eligibility information. The Advisor can assist in canceling or removing account information. If OnStar receives information that vehicle ownership has chan ...

Driving at Night
Night driving is more dangerous than day driving because some drivers are likely to be impaired—by alcohol or drugs, with night vision problems, or by fatigue. Night driving tips include: • ...