Some technicians may be experiencing difficulty in using the OTC Monitor 85 Scan Tool model no. 3485 on Fieros with 2.8L - PFI V-6 Engines (VIN Code 9). To properly use the Scan Tool on subject vehicles it is important that Monitor Code 14 (PONT 6 PFI) be entered. Entering Code 13 (CHEV PFI) will result in erroneous readouts.
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.