Recommended Fuel
Use regular unleaded gasoline with a posted octane rating of 87 or higher. If the octane rating is less than 87, an audible knocking noise, commonly referred to as spark knock, might be heard when driving.
If this occurs, use a gasoline rated at 87 octane or higher as soon as possible. If heavy knocking is heard when using gasoline rated at 87 octane or higher, the engine needs service.
See also:
Additional Factors Affecting System Operation
Safety belts help keep the
passenger in position on the seat
during vehicle maneuvers and
braking, which helps the passenger
sensing system maintain the
passenger airbag status.
See “Safety ...
STABILITRAK
COMPETITIVE MODE
This message displays when the
Competitive Driving Mode is
selected. When in this mode, the
Traction Control System (TCS)
will not be operating and the
TCS/StabiliTrak warning light will
t ...
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 ch ...






