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:
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 ...
Connecting a USB Storage Device or iPod®
The USB Port, located on the instrument panel or in the center console, can be
used to control an iPod or a USB storage device.
To avoid connection problems, extension cords are not recommended. Us ...
Diagnostics
OnStar Vehicle Diagnostics will perform a vehicle check every month. It will
check the engine, transmission, antilock brakes, and major vehicle systems. It also
checks the tire pressures, if the v ...