Fuel
Use of the recommended fuel is an important part of the proper maintenance of your vehicle.
To help keep your engine clean and maintain optimum vehicle performance, GM recommends the use of gasoline advertised as TOP TIER Detergent Gasoline.
See also:
Fuel Range
This display shows the approximate
distance the vehicle can be driven
without refueling. The fuel range
estimate is based on an average of
the vehicle's fuel economy over
recent driving hist ...
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 ...
Roadside Assistance and OnStar
If you have an active OnStar
subscription, press the Q button and the current GPS location will be sent to
an OnStar Advisor who will assess your problem, contact Roadside Assistance, and
relay y ...