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 Messages
APPLY BRAKE BEFORE CRUISE
If this message displays when attempting to activate cruise control, apply
the brake pedal and try again.
CRUISE SET TO XXX
This message displays when the cruise co ...
Architecture and suspension
The story starts with the XLR's backbone, upon which the car's dynamic
capabilities depend. Based on GM's new performance car architecture, this unique
and patented structure comprises steel hydro ...
Radio Menus
Radio menus are available for AM and FM.
Turn the MENU/SELECT knob to open the main radio menu for that frequency. ...