Add-on Electrical Equipment
The OnStar system is integrated into the electrical architecture of the vehicle. Do not add any electrical equipment. See Add-On Electrical Equipment. Added electrical equipment may interfere with the operation of the OnStar system and cause it to not operate.
See also:
Instrument Panel Illumination Control
The instrument panel brightness
knob is located on the instrument
panel next to the steering column.
(Instrument Panel
Brightness): Turn the knob
clockwise or counterclockwise to
brighten ...
Hazard Warning Flashers
(Hazard Warning Flashers):
Press this button located on top of the steering column, to make the front and
rear turn signal lamps flash on and off. This warns others that you are having trouble. ...
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 d ...