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:
Hitches
Use the correct hitch equipment.
See your dealer or a hitch dealer for
assistance.
• The rear bumper on the vehicle
is not intended for hitches. Do
not attach rental hitches or other
bumpe ...
Your Responsibility
Increase the volume of the radio if the OnStar Advisor cannot be heard.
If the light next to the OnStar buttons is red, the system may not be functioning properly. Push and request a vehicle diagnos ...
Hazard Warning Flashers
The hazard warning flashers let you warn others that
you have a problem.
The hazard warning flasher button is located in the
center of the instrument panel above the radio.
: Press to make the ...