CAMPAIGN: IMPROPER CLUTCH BRG. TRANS. PILOT SHAFT COMBINATION

GENERAL MOTORS HAS LEARNED THAT CERTAIN 1985-86 C7 MEDIUM DUTY CONVENTIONAL TRUCKS EQUIPPED WITH A DDAD 8.2L TURBOCHARGED DIESEL ENGINE, FULLER 10 SPEED TRANSMISSION AND LIPE, 2 PLATE, PUSH TYPE CLUTCH MAY HAVE BEEN BUILT WITH AN OVERSIZED I.D. FLYWHEEL PILOT BEARING. THIS CAN RESULT IN ERRATIC SHIFT RELEASE AND DIFFICULT SHIFTING. IN SOME CASES THERE ALSO MAY BE DAMAGE TO THE TRANSMISSION MAIN DRIVE GEAR BEARING RETAINER WHICH MAY RESTRICT CLUTCH DISENGAGEMENT. VEHICLES INVOLVED INVOLVED ARE ALL 1985-1986 C7 MEDIUM DUTY CONVENTIONAL TRUCKS EQUIPPED WITH LH3 (DDAD 8.2L DIESEL ENGINE), MPH (FULLER RT 6610 TRANSMISSION), MXN (LIPE 14" 2 PLATE PUSH CLUTCH), AND MWW (1.75" PILOT SHAFT SPLINE) WITHIN THE FOLLOWING BREAKPOINTS. PLANT MODEL YEAR FROM THROUGH PONTIAC 1985 FV616974 FV632026 PONTIAC 1986 GV501333 GV524602 THE SPECIFIC VEHICLES INVOLVED IN THIS CAMPAIGN HAVE BEEN IDENTIFIED ON VEHICLE IDENTIFICATION NUMBER COMPUTER LISTINGS. THESE LISTINGS ARE FURNISHED TO ALL INVOLVED DEALERS WITH THE CAMPAIGN BULLETIN. DEALER CAMPAIGN RESPONSIBILITY DEALERS ARE TO SERVICE ALL VEHICLES SUBJECT TO THIS CAMPAIGN AT NO CHARGE TO OWNERS, REGARDLESS OF MILEAGE, AGE OF VEHICLE, OR OWNERSHIP, FROM THIS TIME FORWARD. WHENEVER A VEHICLE SUBJECT TO THIS CAMPAIGN IS TAKEN INTO YOUR NEW OR USED VEHICLE INVENTORY, OR IT IS IN YOUR DEALERSHIP FOR SERVICE IN THE FUTURE, YOU SHOULD TAKE THE STEPS NECESSARY TO BE SURE THE CAMPAIGN CORRECTION HAS BEEN MADE BEFORE RESELLING OR RELEASING THE VEHICLE. OWNERS OF VEHICLES RECENTLY SOLD FROM YOUR NEW VEHICLE INVENTORY ARE TO BE CONTACTED BY THE DEALER AND ARRANGEMENTS MADE TO MAKE THE REQUIRED CORRECTION ACCORDING TO INSTRUCTIONS CONTAINED IN THIS BULLETIN. IF NO OWNER'S NAME AND ADDRESS WERE AVAILABLE TO GMC TRUCK AT THE TIME OF CAMPAIGN INITIATION THE DEALER WILL DETERMINE THE OWNER'S NAME AND ADDRESS FROM THE DEALERSHIP SALES RECORDS. PLEASE PROVIDE THIS INFORMATION DIRECTLY ON THE SECOND COPY OF THE LISTING NEXT TO THE APPLICABLE VIN SO THAT OUR RECORDS MAY BE UPDATED AND THE APPROPRIATE NOTIFICATION MAILED TO THE OWNER. THIS SECOND COPY SHOULD THEN BE SUBMITTED TO THE ADDRESS LISTED BELOW IN THE PREVIOUSLY SUPPLIED YELLOW CAMPAIGN ENVELOPES. GMC TRUCK GENERAL MOTORS CORPORATION 101 UNION STREET PLYMOUTH, MICHIGAN 48170 OWNER NOTIFICATION OWNERS WILL BE NOTIFIED OF THIS CAMPAIGN ON THEIR VEHICLES BY GMC TRUCK (SEE COPY OF OWNER LETTER INCLUDED WITH THIS BULLETIN). A LISTING OF OWNER NAMES AND ADDRESSES HAS BEEN FURNISHED TO THE INVOLVED DEALERS TO ENABLE DEALERS TO FOLLOW UP WITH OWNERS INVOLVED IN THIS CAMPAIGN. THIS LISTING MAY CONTAIN OWNER NAMES AND ADDRESSES OBTAINED FROM STATE MOTOR VEHICLE REGISTRATION RECORDS. THE USE OF SUCH MOTOR VEHICLE REGISTRATION DATA FOR ANY OTHER PURPOSE IS A VIOLATION OF LAW IN SEVERAL STATES. ACCORDINGLY, YOU ARE URGED TO LIMIT THE USE OF THIS LISTING TO THIS CAMPAIGN. SERVICE PROCEDURE REMOVE THE TRANSMISSION, REMOVE THE CLUTCH, REPLACE AND ADJUST THE CLUTCH AND REPLACE THE TRANSMISSION UTILIZING THE FOLLOWING PUBLICATIONS: REMOVE AND REPLACE TRANSMISSION: X-8433, PAGE 7B-6, #2 BELL HOUSING. REMOVE CLUTCH: X-8534, PAGE 7C-11, PUSH TYPE 14 INCH DUAL DISC LIPE CLUTCH. REPLACE PILOT BEARING: X-8534, PAGE 7C-17. INSTALL CLUTCH: X-8534, PAGES 7C-14 THROUGH 7C-16. ADJUST CLUTCH: TRUCK SERVICE BULLETIN 86-B-65, DATED APRIL, 1986. PARTS INFORMATION PARTS ARE TO BE OBTAINED FROM GENERAL MOTORS SERVICE PARTS OPERATION (GMSPO). TO ENSURE THAT THESE PARTS WILL BE OBTAINED AS SOON AS POSSIBLE, THEY SHOULD BE ORDERED FROM GMSPO ON A C.I.O. ORDER WITH NO SPECIAL INSTRUCTION CODE BUT ORDER ON AN ADVISE CODE (2). PART NUMBER DESCRIPTION QUANTITY PER VEHICLE 908439 PILOT BEARING 1 WARRANTY INFORMATION DEALERS SHOULD SUBMIT A WARRANTY CLAIM ON EACH VEHICLE COMPLETED UNDER THIS CAMPAIGN. LABOR OPERATION NUMBER DESCRIPTION *TIME ALLOWANCE TROUBLE CODE V3740 REPLACE PILOT 6.6 96 BEARING *ADD 0.1 HR. FOR ADMINISTRATION TIME ALLOWANCE. CAMPAIGN IDENTIFICATION LABEL EACH VEHICLE CORRECTED IN ACCORDANCE WITH THE INSTRUCTIONS OUTLINED IN THIS PRODUCT CAMPAIGN BULLETIN WILL REQUIRE A "CAMPAIGN IDENTIFICATION LABEL". EACH LABEL PROVIDES A SPACE TO INCLUDE THE FIVE (5) DIGIT DEALER CODE OF THE DEALER PERFORMING THE CAMPAIGN SERVICE. THIS INFORMATION MAY BE INSERTED WITH A TYPEWRITER OR BALL POINT PEN. EACH "CAMPAIGN IDENTIFICATION LABEL" IS TO BE LOCATED ON THE RADIATOR CORE SUPPORT IN AN AREA WHICH WILL BE VISIBLE WHEN THE VEHICLE IS BROUGHT IN FOR PERIODIC SERVICING BY THE OWNER. APPLY "CAMPAIGN IDENTIFICATION LABEL" ONLY ON A CLEAN DRY SURFACE. ADMINISTRATIVE PROCEDURE PROCEDURES COVERING THIS CAMPAIGN ARE OUTLINED IN SECTION V OF YOUR DEALERSHIP'S "GMC TRUCK CLAIMS PROCESSING MANUAL" #SD8519.

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.