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:
Cruise Control
Cruise Control Shown with Heated Steering Wheel Button (If Equipped)
The cruise control buttons are located on the left side of the steering wheel.
: Press to turn the system on or off.
The indi ...
Listing Stored Numbers
The list command will list all stored
numbers and name tags.
Using the “List” Command
1. Press and hold for
two seconds. For vehicles with a
navigation system say “Hands
Free” after the ton ...
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 ...






