GM Service Manual Online
For 1990-2009 cars only

REVISE WIRING DIAGRAM ELECTRIC FUEL PUMP

THE FOLLOWING WIRING DIAGRAMS SHOULD BE USED IN THE DIAGNOSIS ON THE SUBJECT VEHICLES EQUIPPED WITH ELECTRIC FUEL PUMPS. WIRING DIAGRAM NO. 1 - FUEL PUMP SERVICE KIT THIS DIAGRAM SHOULD BE USED IN THE DIAGNOSIS ON ANY 1983 OR 1984 VEHICLE WHERE THE SERVICE KIT, P/N 14085385, HAS BEEN INSTALLED PER CHEVY DEALER SERVICE BULLETIN 84-174. WIRING DIAGRAM NO. 2 - PRODUCTION FUEL PUMP THIS DIAGRAM SHOULD BE USED ON 1984 VEHICLES PRODUCED AFTER THE FOLLOWING VIN NUMBERS: NORWOOD - EN163862 VAN NUYS - EL194637 SEE BULLETIN FOR WIRING DIAGRAM.

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.