INFORMATION ON INJECTION PUMP EXCHANGE PROGRAM

THIS BULLETIN IS BEING REVISED TO INFORM "GM OF CANADA" DEALERS THAT THEY ARE NOT AUTHORIZED TO UTILIZE THIS SERVICE BULLETIN.

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"GM OF CANADA" DEALERS ARE NOT AUTHORIZED TO UTILIZE THIS SERVICE BULLETIN.

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REVISION: 09/09/94

THIS BULLETIN IS BEING REVISED TO ADD "NOTE #2", TO INSTRUCT GM OF CANADA DEALERS AND TO REVISE PARAGRAPH 5 (FOR VEHICLES WITHIN THE STANADYNE WARRANTY PERIOD) TO PROVIDE SPECIAL INSTRUCTIONS FOR GM OF CANADA DEALERS. ______________________________________________________________________

SUBJECT: INFORMATION ON INJECTION PUMP EXCHANGE PROGRAM

MODELS: 1994 CHEVROLET AND GMC TRUCK C/K, P TRUCKS AND G VAN WITH 6.5L DIESEL ENGINE (VINS F, P, S - RPOS L65, L49, L56)

AN ELECTRONIC FUEL INJECTION PUMP WILL BE USED ON MANY 6.5L DIESEL ENGINE POWERED VEHICLES FOR THE 1994 MODEL YEAR. THESE STANADYNE MODEL DS PUMPS WILL BE SERVICED BY A PUMP EXCHANGE PROGRAM FOR THE 1994 MODEL YEAR.

NOTE #1: THE 1994 MECHANICAL FUEL INJECTION PUMP (MODEL DB-2) ON VIN Y TRUCKS WILL NOT BE HANDLED ON EXCHANGE BY U.S. DEALERS. THEY WILL BE HANDLED IN THE SAME MANNER AS PREVIOUS MODEL YEAR INJECTION PUMP REPAIRS.

NOTE #2:IN CANADA ALL DB-2 MECHANICAL FUEL INJECTION PUMPS ARE HANDLED ON EXCHANGE AS OUTLINED IN CORP. BULLETIN #056304 - GM OF CANADA #90-6-117).

THE EXCHANGE PROGRAM WILL BE COORDINATED THROUGH THE TECHNICAL ASSISTANCE NETWORK (TAN), WHO WILL PROVIDE DIAGNOSTIC ASSISTANCE AND A CASE NUMBER WHICH ALLOWS FOR THE PUMP EXCHANGE.

PROCEDURE:

THE PROCEDURES FOR THE EXCHANGE PROGRAM FOLLOW: THE SERVICING DEALER DETERMINES IF THE FUEL INJECTION PUMP REQUIRES REPAIR, USING THE TECH 1 DIAGNOSTIC TOOL, SERVICE MANUAL, AND THE DIAGNOSTIC WORKSHEET (FIGURE 1) CONTAINED IN THIS BULLETIN. IF THE DIAGNOSTIC CHECKS LEAD TO THE PUMP, THE SERVICING DEALER CONTACTS TAN FOR A CASE NUMBER. IF TAN AGREES WITH DIAGNOSIS, A CASE NUMBER--WHICH THE DEALER MUST HAVE TO OBTAIN AN EXCHANGE PUMP--IS ASSIGNED. THE SERVICING DEALER WILL EXCHANGE THE PUMP AT A PARTICIPATING STANADYNE SERVICE DEALER.

MOST STANADYNE SERVICE DEALERS WILL BE PARTICIPATING IN THE EXCHANGE PROGRAM. PARTICIPATING STANADYNE SERVICE DEALERS AND CENTRAL DISTRIBUTORS AT THE TIME OF BULLETIN PRINTING ARE LISTED WITHIN THIS BULLETIN. IF A PARTICIPATING DEALER CANNOT BE LOCATED, THE SERVICING DEALER SHOULD CALL THE AREA STANADYNE CENTRAL DISTRIBUTOR FOR THE CLOSEST PARTICIPATING DEALER.

FOR VEHICLES WITHIN THE STANADYNE WARRANTY PERIOD (36 MONTHS/50,000 MILES (80,000 KMS)) THERE WILL BE NO CHARGE TO THE SERVICING DEALER FOR THE EXCHANGE PUMP PROVIDED THE WARRANTY EXCHANGE CONDITIONS ARE MET, I.E., TAN CASE NUMBER, COMPLETED DIAGNOSTIC WORKSHEET (IN CANADA USE GMP71C FORM) AND COMPLETED WARRANTY REPAIR CLAIM FORM GSD-675 (IN CANADA USE GMP71 FORM) ALL OF WHICH MUST ACCOMPANY THE DEFECTIVE PUMP.

IF THE WARRANTY EXCHANGE CONDITIONS ARE NOT MET, THE STANADYNE SERVICE DEALER MAY CHARGE FOR THE EXCHANGE PUMP. THE SERVICING DEALER IS AUTHORIZED TO CHARGE FOR PUMP R&R (J5950), SHIPPING CHARGES, AND 0.2 HOUR ADMINISTRATION.

FOR VEHICLES OUTSIDE THE STANADYNE WARRANTY PERIOD (GREATER THAN 36 MONTHS OR ABOVE 50,000 MILES), STANADYNE WILL CHARGE THE SERVICING DEALER FOR THE EXCHANGE PUMP. IF THE VEHICLE IS STILL WITHIN THE ENGINE WARRANTY (LESS THAN 60 MONTHS OR 100,000 MILES), THE SERVICING DEALER CAN SUBMIT A WARRANTY CLAIM FOR THE PUMP EXCHANGE (J5955), SHIPPING CHARGES, AND 0.2 HOUR ADMINISTRATION. THE WARRANTY EXCHANGE CONDITIONS (TAN APPROVAL, COMPLETED DIAGNOSTIC WORKSHEET, AND WARRANTY FORM) WILL STILL BE REQUIRED BY THE STANADYNE DEALER TO COMPLETE THE EXCHANGE.

IF THE DEFECTIVE PUMP IS NOT RETURNED AT THE TIME OF EXCHANGE, THE STANADYNE SERVICE DEALER MAY BILL THE SERVICING DEALER $900.00 WHICH WILL BE CANCELLED ONLY IF THE PUMP IS RETURNED TO THE STANADYNE SERVICE DEALER WITHIN 30 DAYS. THE SERVICING DEALER IS RESPONSIBLE FOR SHIPPING CHARGES TO AND FROM THE STANADYNE SERVICE DEALER.

FIGURES: 0 ATTACHMENTS: 8

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.

COPYRIGHT 1993, GM POWERTRAIN DIVISION, GENERAL MOTORS CORPORATION. ALL RIGHTS RESERVED.