Gasoline Octane
Use regular unleaded gasoline with a posted octane rating of 87 or higher. If the octane rating is less than 87, you may notice an audible knocking noise when you drive, commonly referred to as spark knock. If this occurs, use a gasoline rated at 87 octane or higher as soon as possible.
If you are using gasoline rated at 87 octane or higher and you hear heavy knocking, your engine needs service.
See also:
OnStar Steering Wheel Controls
This vehicle may have a Talk/Mute button that can be
used to interact with OnStar hands-free calling. See
Audio Steering Wheel Controls for more
information.
On some vehicles, the mute button c ...
System Identification
If the vehicle has the tire sealant
and compressor kit shown above,
see the operating instructions that
follow.
If the vehicle has the tire sealant
and compressor kit shown above,
follo ...
Multi-Band Antenna
The multi-band antenna is on the roof of the vehicle. The antenna is used for
the AM-FM radio, OnStar, the XM Satellite Radio Service System, and GPS (Global
Positioning System), if the vehicle ha ...
