Gasoline Specifications
At a minimum, gasoline should meet ASTM specification D 4814 in the United States or CAN/CGSB-3.5 or 3.511 in Canada. Some gasolines contain an octane-enhancing additive called methylcyclopentadienyl manganese tricarbonyl (MMT). We recommend against the use of gasolines containing MMT. See Fuel Additives for additional information.
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Vehicle Storage
Tires age when stored normally mounted on a parked vehicle. Park a vehicle that
will be stored for at least a month in a cool, dry, clean area away from direct
sunlight to slow aging. This area sh ...
Courtesy Transportation Program
To enhance your ownership experience, we and our participating dealers are proud to offer Courtesy Transportation, a customer support program for vehicles with the Bumper-to-Bumper (Base Warranty Cove ...
How OnStar Service Works
Push this blue button to connect to a specially trained OnStar Advisor to verify your account information and to answer questions.
Push this red emergency button to get priority help from specially ...