1981 V8-6-4 SER. PARTS SUMMARY USAGE OF SERVICE PROMS, ECMS

1981 V8-6-4 EQUIPPED VEHICLES WERE PRODUCED WITH TWO GENERATIONS OF ECM'S. THESE ECM'S AND THEIR RESPECTIVE PROM'S ARE NOT INTERCHANG- EABLE AS EXPLAINED IN SERVICEMAN BULLETIN 81-14. VEHICLES MUST BE EQUIPPED WITH THE SPECIFIED ECM, PROM'S AND OTHER DFI SYSTEM PARTS TO MEET EMISSIONS AND DRIVEABILITY REQUIREMENTS. THE CHART ON THE REVERSE SIDE IS A SUMMARY OF PRESENT SERVICE PARTS USAGE AS UPDATED TO INCLUDE THE PROM CHANGES DESCRIBED IN SERVICEMAN BULLETIN 82-7 AND 82-8. THIS CHART UPDATES THE GMWDD PARTS CATALOG, DATED 12-82, AND SERVICEMAN BULLETIN 81-14. SEE BULLETIN FOR SPECIFIC PART NUMBERS FIRST GEN ECM'S ECM PROM SERVICE SERVICE BROADCAST # SERVICE P/N PART I.D. PROM P/N C FED 100001-130880 1224760 #1-5785LW 1225772 #2-5786LW

C CAL 100001-143985 1224760 #1-5785LW 1225772 #2-5786LW

E/K FED E 600001-616866 1224760 #1-5869BH 1225866 680001-690461 #2-5884BH 1225866

E/K CAL E 600001-617927 1224760 #1-5779KB 1225773 K 680001-691350 #2-5778KB

D FED 100001-130880 1225120 #1-7087LY 1225125 #2-7088LY SECOND GEN ECM'S

C FED AFTER 130880 1225120 #1-5860KK 1225775 #2-5861KK

C CAL AFTER 143985 1225120 #1-5860KK 1225775 #2-5861KK

E/K FED E AFTER 616866 1225120 #1-5853KJ 1225774 K AFTER 690461 #2-5854KJ

E/K CAL E AFTER 617927 1225120 #1-5853KJ 1225774 K AFTER 691350 #2-5854KJ

D FED AFTER 130880 1225120 #1-0050AAF 1225298 #2-0051AAF

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.