INFORMATION ON REVISED ENGINE OIL PAN GASKET. Cadillac Allante 1991

REVISION: 11/18/94

THIS BULLETIN IS BEING REISSUED TO PUBLISH IT FOR GM OF CANADA. THERE HAS BEEN NO CHANGE TO THE ORIGINAL CONTENT. ----------------------------------------------------------------------

SUBJECT: INFORMATION ON REVISED ENGINE OIL PAN GASKET

MODELS: 1985-92 CADILLAC FLEETWOOD 1986-87 CADILLAC DEVILLE 1989-93 CADILLAC DEVILLE 1987-92 CADILLAC FLEETWOOD SIXTY SPECIAL 1993 CADILLAC SIXTY SPECIAL 1985-93 CADILLAC ELDORADO 1986-93 CADILLAC SEVILLE 1987-93 CADILLAC ALLANTE WITH 4.1L, 4.5L AND 4.9L ENGINES

A REVISED OIL PAN GASKET HAS BEEN INCORPORATED INTO 1993 PRODUCTION AFTER VIN BREAKPOINT EUN 594476 AND IS ALSO RELEASED FOR SERVICING ALL 1985-1993 TRANSVERSE V8 ENGINES (EXCEPT 4.6L). THIS REVISED GASKET, P/N 3538862, CONSISTS OF A PLASTIC CARRIER WITH A PRE-FORMED SILICONE INSERT AS THE SEALING MEDIUM. RETAINING TABS ARE INCORPORATED TO HOLD THE GASKET IN POSITION DURING INSTALLATION.

WHEN INSTALLING THIS NEW GASKET IN VEHICLES NOT ORIGINALLY EQUIPPED, THE SERVICE INFORMATION MANUAL PROCEDURE SHOULD BE FOLLOWED WITH TWO EXCEPTIONS:

1. THE USE OF RTV SEALANT AT THE FRONT COVER AND MAIN BEARING CAP JOINTS IS NOT REQUIRED.

2. THREAD LOCKING COMPOUND SUCH AS P/N 12345382 OR 12345493 (LOCTITE 242 OR 243) OR EQUIVALENT SHOULD BE APPLIED TO THE OIL PAN BOLTS. ALWAYS BE SURE BOLT THREADS ARE CLEAN WHEN USING THREAD LOCKING MATERIAL.

NOTE THAT 1993 VEHICLES AFTER VIN BREAKPOINT EUN 594476 ARE ALREADY EQUIPPED WITH A THREAD LOCKING OIL PAN BOLT, P/N 3537345, AND ARE REUSABLE WITHOUT ADDITIONAL APPLICATION OF THREAD LOCKING COMPOUND. OIL PAN BOLTS WITH PRE-APPLIED LOCKING COMPOUND MAY BE REUSED UP TO FIVE TIMES BEFORE ADDITIONAL LOCKING MATERIAL IS REQUIRED OR BOLTS SHOULD THEN BE REPLACED.

PARTS ARE CURRENTLY AVAILABLE FROM GMSPO.

FOR WARRANTY PURPOSES, USE LABOR OPERATION J1000 USING THE LABOR ALLOWANCE APPROPRIATE FOR THE MODEL YEAR OF THE VEHICLE BEING SERVICED. LABOR ALLOWANCES REMAIN UNCHANGED FROM THOSE FOR THE ORIGINAL CORK GASKET.

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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.