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
This section of the manual describes how to use safety belts properly. It also
describes some things not to do with safety belts.
WARNING
Do not let anyone ride where a safety belt cannot be wor ...
Your Responsibility
You may need to increase the volume of your
radio to hear the OnStar® advisor. If the light next
to the OnStar® buttons is red, this means that
your system is not functioning properly and should
...
Seat Recall
Press the customization button until SEAT
RECALL: OFF appears in the display. To select
your preference for recall of the driver’s memory
seat, mirrors, and adjustable pedals, if your vehicle
ha ...