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:
Steering Wheel Controls
Steering Wheel Controls
For vehicles with audio steering wheel controls, some audio controls can be adjusted at the steering wheel.
Press to interact with the available Bluetooth, OnStar, or navig ...
Heated Steering Wheel
(Heated Steering Wheel): For vehicles
with a heated steering wheel, press to turn it on or off. A light on the button
displays when the feature is turned on. The steering wheel takes about thre ...
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 ...