SERVICE MANUAL REVISION TO DIAGNOSTIC CHART -CODE 54

MODELS AFFECTED: 1988 CENTURYS WITH THE 2.8L V-6 ENGINE (VIN CODE W)

The revised Code 54 diagnostic chart is presented to accurately diagnose the Fuel Pump Circuit. This chart replaces the Code 54 charts found in the 1988 new product service manual for the previously mentioned engine application (See Figure 1).

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.