HARD START, NO START, DTC 13 OR P0215, SES LIGHT ON

SUBJECT: HARD START, NO START, DTC 13 OR P0215, SERVICE ENGINE SOON LIGHT ON (REPLACE ELECTRONIC SHUTOFF SOLENOID ON VEHICLE)

MODELS: 1994-99 CHEVROLET AND GMC C, K, G MODELS - WITH 6.5L DIESEL ENGINE (VINS F, P, S, Y - RPOS L65, L49, L56, L57)

CONDITION:

SOME OWNERS MAY COMMENT THAT THEIR VEHICLE IS DIFFICULT TO START OR WILL NOT START. IN ADDITION, THE SERVICE ENGINE SOON LIGHT MAY BE ILLUMINATED.

CORRECTION:

IF DTC 13 (1994-95 MODEL YEARS) OR P0215 (1996-99 MODEL YEARS) DIAGNOSTICS LEAD TO INJECTION PUMP REPLACEMENT, A NEW ON-VEHICLE REPLACEMENT PROCEDURE IS AVAILABLE FOR THE ESO (ELECTRONIC SHUTOFF SOLENOID. THIS PROCEDURE ELIMINATES THE NEED TO REPLACE THE ENTIRE INJECTION PUMP.

SERVICE PROCEDURE:

USE THE FOLLOWING PROCEDURE FOR C/K MODEL VEHICLES -

1. DISCONNECT THE ELECTRICAL CONNECTOR FROM THE ESO SOLENOID, (FIGURE 1).

NOTICE:

REMOVE ANY DEBRIS FROM THE ESO MOUNTING SURFACE ON THE INJECTION PUMP BEFORE SERVICING THE ESO SOLENOID. THIS WILL PREVENT CONTAMINANT FROM GETTING INTO AND DAMAGING THE INJECTION PUMP.

2. REMOVE THE SOLENOID (STYLE OF SOLENOID MAY VARY) AND O-RING FROM THE INJECTOR PUMP HOUSING (FIGURE 2, FIGURE 3).

3. INSTALL O-RING SEAL ABOVE THREADS AT BOTTOM OF NEW SOLENOID.

4. INSTALL REPLACEMENT SOLENOID, P/N 12561591, INTO INJECTOR PUMP HOUSING AND TORQUE TO 25 N.M (19 LB FT).

5. CONNECT ELECTRICAL CONNECTOR TO ESO SOLENOID.

6. START ENGINE AND CHECK FOR LEAKS.

USE THE FOLLOWING PROCEDURE FOR G-VAN VEHICLES -

1. UNSNAP AND REMOVE UPPER TRIM PLATE ABOVE ENGINE COVER (REFER TO INTERIOR TRIM SECTION OF G-VAN SERVICE MANUAL).

2. REMOVE ENGINE COVER (REFER TO INTERIOR TRIM SECTION OF G-VAN SERVICE MANUAL).

3. REMOVE AIR CLEANER ASSEMBLY (REFER TO AIR CLEANER REMOVE IN ENGINE CONTROLS SECTION OF G-VAN SERVICE MANUAL).

4. REMOVE AIR DUCT FROM TURBO INLET.

5. REMOVE UPPER RADIATOR SHROUD (REFER TO RADIATOR REPLACEMENT IN THE ENGINE COOLING SECTION OF THE G-VAN SERVICE MANUAL).

6. DISCONNECT ELECTRICAL CONNECTOR FROM ELECTRONIC SHUTOFF SOLENOID (REFER TO FIGURE 1).

NOTICE:

REMOVE ANY DEBRIS FROM THE ESO MOUNTING SURFACE ON THE INJECTION PUMP BEFORE SERVICING THE ESO SOLENOID. THIS WILL PREVENT CONTAMINANT INTRUSION INTO THE INJECTION PUMP.

7. INSTALL O-RING SEAL ABOVE THREADS AT BOTTOM OF NEW SOLENOID.

8. INSTALL NEW ESO SOLENOID, P/N 12561591, INTO INJECTOR PUMP AND TORQUE TO 25 N.M (19 LB FT).

9. CONNECT ELECTRICAL CONNECTOR TO ESO SOLENOID.

10. INSTALL UPPER RADIATOR SHROUD.

11. INSTALL AIR DUCT TO TURBO INLET.

12. INSTALL AIR CLEANER ASSEMBLY.

13. START ENGINE AND CHECK FOR LEAKS.

14. INSTALL ENGINE COVER.

PARTS INFORMATION:

DESCRIPTION P/N ----------- --- SOLENOID, ELECTRONIC SHUT OFF P/N 12561591

PARTS ARE CURRENTLY AVAILABLE THROUGH GMSPO. DO NOT CONTACT YOUR STANADYNE DEALER TO OBTAIN THIS PART.

WARRANTY INFORMATION:

FOR VEHICLES REPAIRED UNDER WARRANTY, USE:

LABOR OPERATION LABOR OPERATION NUMBER DESCRIPTION TIME --------------- ----------- ---------------

J5973 ELECTRONIC SHUT OFF 0.2 HR (C/K) SOLENOID - REPLACE 0.8 HR (G-VAN)

FIGURES: 3 ATTACHMENTS: 0

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.

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