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:
Malfunction Indicator Lamp
A computer system called OBD II (On-Board Diagnostics-Second Generation) monitors operation of the fuel, ignition, and emission control systems. It makes sure that emissions are at acceptable levels f ...
Power Lumbar
On vehicles equipped with either a two-way or four-way
lumbar, the control is located on the outboard side of
the seats.
For a detailed operation description see Power Lumbar . ...
OnStar Steering Wheel Controls
This vehicle may have a Talk/Mute button that can be used to interact with OnStar Hands-Free calling.
See Steering Wheel Controls for more information.
On some vehicles, the Talk button can be ...