A/T - Transmission Fluid Leak From Pump Body

File In Section: 7 - Transmission

Bulletin No.: 57-71-26B

Date: April, 1997

Subject:
Transmission Fluid Leak from Pump Body (Replace Bushing)

Models:
1995-96 Buick Road master
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
with HYDRA-MATIC 4L60-E Transmission (RPO M30)

This bulletin is being revised to remove the Warrant Statement under correction to GMC dealers. Please discard Corporate Bulletin number 57-71-26A (Section 7 - Transmission).

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 J 41778.














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 J 41778-1.

4. Install new bushing using J 41778-2 as a positive stop and an Arbor Press with J 41778-1.

Refer to your service manual for proper pump assembly removal and replacement procedures.

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 Labor Time
Use published labor
K7121 operation time.