INTERMITTENT MALFUNCTION INDICATOR LAMP (MIL) WITH DTCS. GMC Truck GMC P RV/Van/Commercial Chassis 1996

SUBJECT: INTERMITTENT MALFUNCTION INDICATOR LAMP (MIL) WITH DTCS P0251, P0370, P1216 AND STUMBLE, STALL, HARD START (CHECK FUEL TANK LEVEL)

MODELS: 1996-97 CHEVROLET AND GMC C/K, G AND P MODELS 1996-97 AM GENERAL HUMMER 1996-97 REUMECH A-WAGON WITH 6.5L DIESEL ENGINE (VINS F, S--RPOS L65, L56)

CONDITION:

SOME OWNERS MAY EXPERIENCE AN INTERMITTENT MALFUNCTION INDICATOR LAMP (MIL) ASSOCIATED WITH HISTORY DTC'S P0251, P0370, P1216. ALSO, OWNERS MAY EXPERIENCE A STUMBLE, HARD START OR STALL. IT IS POSSIBLE THAT THE TECHNICIAN MAY NOT BE ABLE TO DUPLICATE THE DRIVEABILITY CONCERN BUT WILL NOTICE HISTORY DTCS ON THE TECH 2 SCANNER.

CAUSE:

AIR ENTERING THE FUEL SYSTEM WHEN FUEL LEVELS GET BELOW 1/8 OF A TANK DURING HARD ACCELERATION OR TURNING MANEUVERS.

CORRECTION:

CHECK FUEL TANK LEVEL, IF NECESSARY FILL TANK TO AT LEAST 1/2 FULL AND PURGE AIR FROM FUEL SYSTEM USING PROCEDURE IN SERVICE MANUAL. ERASE DTCS ON TECH 2 SCANNER. ADDITIONALLY, INFORM CUSTOMER OF CONDITIONS ASSOCIATED WITH LOW FUEL LEVELS INDICATED IN THE DIESEL SUPPLEMENT OWNER'S MANUAL.

WARRANTY INFORMATION FOR VEHICLES REPAIRED UNDER WARRANTY, USE:

LABOR OPERATION DESCRIPTION LABOR TIME L1005 FUEL SYSTEM AIR BLEED 0.4 HOUR DIESEL

FIGURES: 0 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.