SPECIAL POLICY: CYLINDER BLOCK ADJUSTMENT

PONTIAC: PLEASE DISCARD 84-SM-34 AND 84-SM-34A, BOTH DATED 11/85. THIS 84-SM-34B INCLUDES NEW CAMSHAFT AND LIFTER PART NUMBERS AND VEHICLE BREAKPOINTS. CHEVROLET: THIS REVISED DEALER BULLETIN CANCELS AND REPLACES 84-261 DATED NOVEMBER, 1985 WHICH SHOULD BE DESTROYED. THIS REISSUE REFLECTS CHANGES IN PART NUMBERS ONLY. SOME 1984 "A", "F", AND "X" MODEL VEHICLES EQUIPPED WITH RPO LR8 OR LQ9 2.5L ENGINES (VIN CODES R AND 2) MAY EXPERIENCE CRACKS IN THE CYLINDER BLOCK CASTING BETWEEN THE VALVE LIFTER CAVITY AND THE WATER JACKET RESULTING IN THE LOSS OF ENGINE COOLANT AND SUBSEQUENT ENGINE FAILURE. VEHICLES INVOLVED ALL 1984 "A", "F" AND "X" MODEL VEHICLES EQUIPPED WITH RPO LR8 OR LQ9 2.5L ENGINES (VIN CODES R AND 2) FROM THE START OF PRODUCTION THROUGH THE APPLICABLE BREAKPOINTS: MODEL ASSEMBLY PLANT FROM THROUGH CENTURY DORAVILLE ED400001 ED499703 CENTURY OKLAHOMA CITY E6400001 E6502755 SKYLARK WILLOW RUN EW400001 EW486389

CELEBRITY: PLANT FROM THROUGH FRAMINGHAM (A) EG100001 EG156453 OKLAHOMA CITY (A) E6800001 E6931001 OSHAWA (A) E1100001 E1142142 CAMARO: NORWOOD (F) EN100001 EN167527 VAN NUYS (F) EL100001 EL198365 CITATION: TARRYTOWN (X) ET100001 ET163406 WILLOW RUN (X) EW100001 EW106783 A MODEL OSHAWA PLANT (1) PLANT S.O.P. TO/INCL. E1304928 F MODEL VAN NUYS (L) PLANT S.O.P. TO/INCL. EL246513 F MODEL NORWOOD (N) PLANT S.O.P. TO/INCL. EN234584 X MODEL TARRYTOWN (T) PLANT S.O.P. TO/INCL. ET214754 P MODEL PONTIAC (P) PLANT S.O.P. TO/INCL. EP266839 MODEL PLANT FROM TO AND INCLUDING OMEGA WILLOW RUN (W) START OF PRODUCTION EW342272 CUTLASS DORAVILLE (D) START OF PRODUCTION ED455232 CIERA FRAMINGHAM (G) START OF PRODUCTION EG335744 SPECIAL POLICY ADJUSTMENT SHOULD THE ENGINE BLOCK CRACK, DUE TO THE CONDITIONS IDENTIFIED IN THIS SPECIAL POLICY BULLETIN, GENERAL MOTORS WILL REPLACE THE PARTIAL ENGINE P/N 10030773 AND THE FOLLOWING ASSOCIATED PARTS: - CAM SHAFT - TRANSMISSION INSERT PILOT BUSHING - CAM GEAR - OIL FILTER - CRANK GEAR - ENGINE OIL - LIFTERS - ENGINE COOLANT - GASKETS THIS SPECIAL POLICY COVERS BOTH PARTS AND LABOR FOR A PERIOD OF FIVE (5) YEARS OR 100,000 MILES, WHICHEVER OCCURS FIRST, FROM THE DATE THE VEHICLE WAS ORIGINALLY PLACED IN SERVICE. THIS "SPECIAL POLICY ADJUSTMENT BULLETIN," SHOULD BE FILED IN THE 3 RING BINDER FURNISHED TO THE DEALER BY GENERAL MOTORS; OLDSMOBILE: ALSO FILE A COPY OF DEALER MANAGEMENT BULLETIN 84-I-32. SERVICE PROCEDURE 1. PRESSURE TEST FOR EVIDENCE OF COOLANT LOSS. 2. IF PRESSURE TEST SHOWS NO VISIBLE EVIDENCE OF COOLANT LOSS, REMOVE COVER FROM VALVE LIFTER AREA AND INSPECT CASTING ABOVE LIFTER CAVITY (SEE ILLUSTRATION). 3. WITH ENGINE WARM AND PRESSURE APPLIED, COOLANT SHOULD BE VISIBLE USING A "BLACK LIGHT." 4. IF CONDITION IS EVIDENT, CYLINDER BLOCK AND THOSE ASSOCIATED PARTS IDENTIFIED IN THIS BULLETIN MUST BE REPLACED USING APPLICABLE REPLACEMENT PROCEDURES REFERENCED IN SECTION 6A OF THE APPROPRIATE 1984 SEVICE MANUAL TO PREVENT CAMSHAFT LOBE AND VALVE LIFTER SCUFFING, COAT LIFTERS AND CAMSHIFT LOBES WITH GM ENGINE OIL SUPPLEMENT, USE P/N 1052367 (16 OUNCE) DURING ASSEMBLY. PARTS INFORMATION PARTS ARE TO BE OBTAINED FROM THE GENERAL MOTORS WAREHOUSING AND DISTRIBUTION DIVISION (GMWDD). THESE PARTS, WHEN REQUIRED, SHOULD BE ORDERED FROM GMWDD ON A C.I.O. ORDER WITH NO SPECIAL INSTRUCTION CODE, BUT ORDER ON AN ADVISE CODE (2). PART NUMBER QUANTITY DESCRIPTION 10030773 1 PARTIAL ENGINE IMPORTANT - P/N 10030773 CONSISTS OF BLOCK, PISTONS AND ROD ASSEMBLIES, CRANKSHAFT, CRANKSHAFT BEARINGS, ROD BEARINGS, AND REAR SEALS. 10029616 1 CAM SHAFT 10005942 1 CAM GEAR 10028052 1 CRANK GEAR 5234200 8 LIFTERS 10026805 1 GASKET KIT 10026815 1 GASKET KIT 10009785 1 MANUAL TRANSMISSION INSERT PILOT BUSHING ("A", "X") 10007202 1 MANUAL TRANSMISSION INSERT PILOT BUSHING (F) 10018699 1 AUTOMATIC TRANSMISSION INSERT PILOT BUSHING ("A", "F", "X") 25010792 1 OIL FILTER 1052734/1052915 1 (10 OZ) RTV 1052763 3 QTS OIL 1052367 1 (16 OZ.) ENGINE OIL SUPPLEMENT 1052753 6 QTS. ENGINE COOLANT WARRANTY CLAIM INFORMATION WHEN PERFORMING THE REPAIRS OUTLINED IN THE SERVICE PROCEDURE OF THIS BULLETIN AND APPROPRIATE SHOP MANUAL INSTRUCTIONS, SUBMIT A WARRANTY CLAIM FOR CREDIT AS FOLLOWS: ** *** **** FAILED PARTS LAB NET REPAIR PERFORMED PC PART NO. ALLOW FC LABOP HRS AMT REPLACE PARTIAL ENGINE 16 10030773 00 T1146 8.2 'A' CAR (CELEBRITY) REPLACE PARTIAL ENGINE 16 10030773 00 T1146 8.2 'X' CAR (CITATION) REPLACE PARTIAL ENGINE 16 10030773 00 T1146 5.9 'F' CAR (CAMARO) **THE PARTS ALLOWANCE SHOULD BE THE SUM TOTAL OF THE CURRENT WDDGM NET PLUS 30% OF ALL PARTS REQUIRED FOR THE REPAIR. ***LABOR HOURS DO NOT INCLUDE ADD OF PS, AC, ETC. SHOULD BE ADDED AS REQUIRED. ****MISCELLANEOUS SOLVENTS, SUCH AS RTV, OIL, EOS AND ENGINE COOLANT SHOULD BE ENTERED IN THE DEALER NET AMOUNT COLUMN. REIMBURSEMENT - CHEVROLET CLAIMS FOR CUSTOMER REIMBURSEMENT OR PREVIOUSLY PAID REPAIRS ARE TO BE SUBMITTED TO THE ZONE OFFICE FOR REVIEW AND DISPOSITION. BUICK WARRANTY INFORMATION FAILED PART NO. LABOR OPERATION NO. TROUBLE CODE LABOR HORUS 10030773 T5104 92 CENTURY *8.9 HRS *ADD ADDITIONAL LABOR TIME AS REQUIRED: A/C= .4 HR. CRUISE = .2 HR. TO RECONDITION ALL VALVES = 1.1 HR. AUTO TRANS. - SKYLARK ONLY = .4 HR. ZONE AUTHORIZATION IS NOT REQUIRED FOR CLAIMS MEETING THE CRITERIA OUTLINED IN THIS BULLETIN. PONTIAC CLAIM INFORMATION DEALERS WILL BE CREDITED VIA WARRANTY DOCUMENT OR TERMINAL TRANSMISSION, WHICHEVER IS THEIR NORMAL METHOD OF SUBMISSION FOR PAYMENT. CLAIMS SHOULD CONTAIN ALL INFORMATION AS REQUIRED, AND SHOULD LIST THE APPROPRIATE LABOR OPERATON AS OUTLINED ON THE FOLLOWING PAGE. FAILURE LABOR LABOR LABOR DESCRIPTION CODE OPERATION HOURS REPLACE PARTIAL ENGINE 05 CRACKED T1146 A - 8.3* F - 6.7** P - 7.7*** X - 8.8* OWNER REIMBURSEMENT FOR ENGINE REPAIRS RELATED TO THIS POLICY USE T3147 *ADD .4 FOR A/C, .1 FOR FOR CRUISE CONTROL, 1.1 FOR RECONDITION ALL VALVES **ADD 1.1 FOR RECONDITION ALL VALVES ***ADD .9 FOR A/C, .1 FOR CRUISE CONTROL, 1.1 FOR RECONDITION ALL VALVES. NOTE: THE ABOVE OPERATIONS ARE APPLICABLE ONLY TO THOSE VEHICLES ELIGIBLE UNDER THIS POLICY. IF SUBMITTED WITH NON-ELIGIBLE VEHICLES, THE CLAIM WILL BE REJECTED FOR ERROR CODE 33 - LABOR OPERATION INCOMPATIBLE TO VEHICLE.

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.