TRANSAXLE FLUID LEAK AT CON. (INSTALL NEW HELIX CON. SEAL). Buick Regal 1992

THIS BULLETIN IS BEING REVISED TO CHANGE THE CORRECTION.

********************************************************************* TRANSAXLE APPLICATIONS: SUBJECT: 1991-93 HYDRA-MATIC 4T60-E (RPO M13) TRANSAXLE FLUID LEAK AT HELIX CONVERTER SEAL (REPLACE TRANSAXLE WITH SRTA UNIT)

TRANSAXLE MODELS: VEHICLE APPLICATIONS: ALL C,E,H,K,W-CAR U-VAN *********************************************************************

CONDITION:

SOME VEHICLES EQUIPPED WITH A 1991-93 HYDRA-MATIC 4T60-E (RPO M13) TRANSAXLE BUILT ON OR BEFORE JULIAN DATE 302 (OCTOBER 28, 1992) MAY EXHIBIT A FLUID LEAK BETWEEN THE HELIX CONVERTER SEAL AND ITS BORE. UNDER SOME CONDITIONS THE HELIX CONVERTER SEAL MAY WALK-OUT PARTIALLY OR COMPLETELY. HOT WEATHER AND/OR EXTREME OPERATING CONDITIONS ARE CONTRIBUTING FACTORS TO THIS CONCERN.

CAUSE:

THE ABOVE CONDITION MAY BE DUE TO THE TAPER OF THE HELIX CONVERTER SEAL BORE AND CANNOT BE REPAIRED AT A DEALERSHIP LEVEL.

CORRECTION:

BEGIN WITH THE "FLUID LEAK DIAGNOSIS" ("AUTOMATIC TRANSAXLE ON-VEHICLE SERVICE SECTION OF THE 1991-93 SERVICE MANUAL") WHICH PROVIDES A DETAILED PROCEDURE IN LOCATING AND REPAIRING VEHICLE LEAKS.

IF IT IS DETERMINED THE LEAK IS FROM THE HELIX CONVERTER SEAL, REMOVE THE TRANSAXLE ASSEMBLY AND REPLACE IT WITH A SERVICE REPLACEMENT TRANSMISSION ASSEMBLY (SRTA).

SERVICE MANUAL INFORMATION:

REFER TO THE 1991-93 SERVICE MANUAL, AUTOMATIC TRANSAXLE ON-VEHICLE SERVICE SECTION 7A FOR PROPER ON-VEHICLE SERVICE TO REMOVE AND REPLACE A HYDRA-MATIC 4T60-E TRANSAXLE.

LABOR TIME INFORMATION:

LABOR TIME SHOULD BE CHARGED UNDER OPERATION NUMBER K7000 FOR "TRANSAXLE ASSEMBLY-REPLACE" FROM THE APPROPRIATE 1991-1993 LABOR TIME GUIDE.

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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 OCCURRING 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 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.