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:
Vehicle and Power Issues
OnStar services require a vehicle
electrical system, wireless service,
and GPS satellite technologies to be
available and operating for features
to function properly. These systems
may not o ...
Safety Belts
Refer to the following sections for important information on how to use
safety belts properly:
- Safety Belts
- How to Wear Safety Belts Properly
- Lap-Shoulder Belt
- Lower Anchors and Tet ...
Heated Steering Wheel
: Press to turn the heated steering
wheel on or off. A light on the button displays when the feature is turned on.
The steering wheel takes about three minutes to start heating. ...