For 1990-2009 cars

# AIR/FUEL MIXTURE ADJUSTMENT REVISED INFORMATION

THIS BULLETIN ILLUSTRATES THE AIR/FUEL MIXTURE ADJUSTMENT SETTINGS FOR ALL 1982 VARAJET, DUALJET, AND QUADRAJET MODEL CARBURETORS. REFER TO ACTUAL BULLETIN TO VIEW ILLUSTRATIONS AND CHARTS.

General Motors bulletins are intended for use by professional technicians, not a "do-it-yourselfer". They are written to inform those technicians of conditions that may occur on some vehicles, or to provide information that could assist in the proper service of a vehicle. Properly trained technicians have the equipment, tools, safety instructions and know-how to do a job properly and safely. If a condition is described, do not assume that the bulletin applies to your vehicle, or that your vehicle will have that condition. See a General Motors dealer servicing your brand of General Motors vehicle for information on whether your vehicle may benefit from the information.