For 1990-2009 cars

# EFI DIAGNOSIS CHARTS REVISION INFORMATION

EFI CHART 8E, TCC DIAGNOSIS. THE CHART IS SPLIT AT THE TOP BY TRANSMISSION USAGE RATHER THAN ENGINE. CADILLAC EXISTING CHART IS OK. OLDSMOBILE AND BUICK COPY IS FOR 125C TRANSMISSION ONLY.

EFI CHART 5 (PAGE 1 OF 2), FUEL SYSTEM DIAGNOSIS. THE 2.0L ENGINE DOES NOT USE A FUEL PUMP TEST LEAD IN THE ALCL. OTHER CHANGES ARE SHOWN WITH (*).

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.