TRANSMISSION FLUID LEAK FROM PUMP BODY (REPLACE BUSHING). Chevrolet Impala 1995

REVISION: 02/06/97

THIS BULLETIN IS BEING REVISED TO CHANGE THE LABOR OPERATION CODE. PLEASE DISCARD CORPORATE BULLETIN NUMBER 57-71-26 (SECTION 7 -- TRANSMISSION). ---------------------------------------------------------------------- REVISION: 04/02/97

THIS BULLETIN IS BEING REVISED TO REMOVE THE WARRANTY STATEMENT UNDER CORRECTION TO GMC DEALERS. PLEASE DISCARD CORPORATE BULLETIN NUMBER 57-71-26A (SECTION 7 -- TRANSMISSION). ---------------------------------------------------------------------- SUBJECT: TRANSMISSION FLUID LEAK FROM PUMP BODY (REPLACE BUSHING)

MODELS: 1995-96 BUICK ROADMASTER 1995-96 CADILLAC FLEETWOOD 1995-96 CHEVROLET CAPRICE, CAMARO, CORVETTE 1995-96 PONTIAC FIREBIRD

1995-96 CHEVROLET AND GMC TRUCK C/K, M/L, S/T, G MODELS 1996 OLDSMOBILE BRAVADA 1995-96 HOLDEN COMMODORE WITH HYDRA-MATIC 4L60-E TRANSMISSION (RPO M30)

CONDITION: (FIGURE 1) SOME OWNERS MAY EXPERIENCE A PUMP FLUID LEAK. STARTING SEPTEMBER 11, 1995 (JULIAN DATE 254) ALL UNITS ARE BUILT USING A REVISED DESIGN BODY BUSHING.

CAUSE:

THE PUMP BUSHING IS SPINNING OR WALKING OUT OF THE BODY.

CORRECTION:

REPLACE THE PUMP BODY BUSHING USING KENT-MOORE TOOL J41778.

REMOVAL AND REPLACEMENT PROCEDURE (FIGURES 2-5)

1. REMOVE THE FRONT HELIX RETAINER (244). 2. REMOVE THE OIL SEAL ASSEMBLY (243). 3. REMOVE THE PUMP BODY BUSHING (242) USING TOOL J41778-1. 4. INSTALL NEW BUSHING USING J41778-2 AS A POSITIVE STOP AND AN ARBOR PRESS WITH J41778-1.

REFER TO YOUR SERVICE MANUAL FOR PROPER PUMP ASSEMBLY REMOVAL AND REPLACEMENT PROCEDURES.

SERVICE PARTS INFORMATION

PART # DESCRIPTION * 24206030 BUSHING-PUMP BODY

* THIS PART WILL SERVICE ALL 4L60 AND 4L60-E APPLICATIONS FROM 1982-1996.

WARRANTY INFORMATION

FOR VEHICLES REPAIRED UNDER WARRANTY, USE: LABOR OPERATION CODE: K7121/ HOLDEN-K703100 USE PUBLISHED LABOR OPERATION TIME.

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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.