A/T - Forward and Reverse Servo Part Changes
File in Section: 7 - TransmissionBulletin No.: 47-71-32
Date: September, 1994
INFORMATION
Subject:
Forward and Reverse Servo Part Changes
Models: 1991 Buick Reatta
1991-93 Buick Riviera
1991-94 Buick Park Avenue, Regal
1992-94 Buick LeSabre
1994 Buick Century, Skylark
1991-93 Cadillac Eldorado, Seville, Sixty Special, Fleetwood (FWD)
1991-94 Cadillac DeVille
1991-94 Chevrolet Lumina
1992-94 Chevrolet Lumina APV
1994 Chevrolet Beretta, Corsica
1991-94 Oldsmobile Ninety Eight, Cutlass Supreme
1991-92 Oldsmobile Toronado, Trofeo
1992-94 Oldsmobile Eighty Eight, Silhouette
1994 Oldsmobile Cutlass Ciera, Achieva
1991-94 Pontiac Grand Prix
1992-94 Pontiac Bonneville, Trans Sport
1994 Pontiac Grand Am
Transaxle Applications:
Hydra-Matic 4T60-E (RPO M13) Transaxle
Models:
Models Built Before March 14, 1994 (Julian Date 073)
A Garage Shift Package, which involves revisions to the Forward and Reverse Servo Assemblies, was implemented in production. The Garage Shift Package part changes are as follows:
Forward Servo
- Revised Forward Servo Cushion Spring ONLY.
Reverse Servo
- Revised Reverse Servo Cushion AND Return Springs.
- Elimination of the Reverse Servo Curved Spring.
- Elimination of one of the two Reverse Servo Cushion Spring Retainers.
Service Information:
(Figures 1 and 2) When servicing the Forward and/or Reverse Servo Assemblies on 1991-1994 Hydra-Matic 4T60-E transaxles built before March 14, 1994
(Julian Date 073) and Servo Cushion and/or Return Spring replacement is required, follow these guidelines:
Forward Servo
Replace the original Forward Servo Cushion Spring with the updated spring part number listed.
Reverse Servo
- Replace the original Reverse Servo Cushion and Return Springs with the Spring Kit Package part number listed.
- Remove the Reverse Servo Curved Spring and one of the two Reverse Servo Cushion Spring Retainers.
Service Parts Information:
Warranty Information:
For vehicles repaired under warranty, use: (see illustration)