For 1990-2009 cars

# Info - Forward Clutch Piston Change on 4T40E/4T45E Automatic Transaxles

Subject: | Forward Clutch Piston Change on 4T40-E/4T45-E Automatic Transaxles

Models: | 1998-2000 Chevrolet Cavalier, Malibu

| 1998-1999 Oldsmobile Cutlass

| 1999-2000 Oldsmobile Alero

| 1998-2000 Pontiac Sunfire

| 1999-2000 Pontiac Grand Am

| 1999-2000 Toyota Cavalier

| 1999-2000 Daewoo Lanos, Nubria

| with 4T40-E or 4T45-E (RPOs MN4, MN5) Automatic Transaxle

Starting with transmission Julian date 9068, the forward clutch piston was changed for ease of assembly in manufacturing. The pistons will have the same part number (24208641), and either one may be used for service. Below is a picture showing the old design (1), and the new design (2).

(1) | Old Design
(2) | New Design