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Makes 🢒 Chevrolet 🢒 2000 🢒 Cavalier 🢒 Bulletins 🢒 DTC P0730, No Third and Fourth Gear (Replace Direct Clutch Piston Assembly)

DTC P0730, No Third and Fourth Gear (Replace Direct Clutch Piston Assembly)

Subject:No Third And Fourth Gear (Replace Direct Clutch Piston Assembly)

Models:1999-2000 Chevrolet Cavalier, Malibu
1999 Oldsmobile Cutlass
1999-2000 Oldsmobile Alero
1999-2000 Pontiac Grand Am, Sunfire
1999-2000 Toyota Cavalier
with Hydra-Matic 4T40-E, 4T45-E Transaxle (RPOs MN4, MN5)
and 2.2 L, 2.4 L, 3.0 L, 3.1 L or 3.4 L Engine (VINs 4, F, T, R, M, E -- RPOs LN2, L61, LD9, L81, L82, LA1)
1999-2000 Daewoo Lanos, Nubria
with Hydra-Matic 4T40-E Transaxle (RPO MN4)
and 1.5 L, 1.6 L or 2.0 L Engine


Condition
Object Number: 370358 Size: SF
(1)Transmission ID Location
(2)VIN Location
(3)Calendar Year
(4)Julian Date
(5)Shift and Line Number
(6)Model Year
(7)Model
(8)Serial Number in Base Code 31
(9)J = Windsor Plant
(10)Broadcast Code
(11)Transmission (4T40-E)

Some owners of the above listed vehicles built prior to November 1, 1999 (Julian Date 305) may comment on a no third and fourth gear condition.

Cause
Object Number: 647078 Size: SH

This condition may be caused by the molded seal portion of the direct clutch piston assembly delaminating from the steel housing eventually causing the outer lip of the piston seal to cut or tear. This cut or tear prevents the direct clutch piston assembly from applying causing the loss of both third and fourth gear.

Correction

To correct the above condition, install a Tech 2 to the vehicle and command third gear. If third gear does not exist, proceed with an inspection of the direct clutch piston assembly for the cause listed above. If the direct clutch piston has a torn seal, replace it with a new piston that has been released to prevent this condition. Inspect and replace any other parts that show potential damage or quality concerns.

Refer to the 4T40-E/4T45-E Unit Repair Section of the Service Manual for the proper procedure.

Service Parts Information

Part Number

Description

24205044

Direct Clutch Piston Assembly

Parts are currently available from GMSPO.

Warranty Information

For vehicles repaired under warranty, use:

Labor Operation

Labor Time

K7581

Use published labor operation time