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Service bulletin 020730050

A bulletin is a manufacturer's communication to its dealers, as NHTSA indexes it. The summary is NHTSA's. The document is the manufacturer's: read it at NHTSA. A bulletin is not a recall, and listing a model year does not mean every vehicle of it is concerned.

The communication, as NHTSA indexes it (as of 2026-10-19)
TypeService bulletin
NHTSA id10000759
Published by NHTSA2003-03-29
Manufacturer's number020730050
Manufacturer's date2002-12-01
NHTSA componentPOWER TRAIN

NHTSA's summary

ENGINEERING CHANGES TO THE VALVE BODY, PRESSURE REGULATOR VALVE, 2-3 ACCUMULATOR VALVE AND BORE FOR 2002-2003 MODEL YEAR 4T45E TRANSAXLES AND SUBSEQUENT OVERHAUL PROCEDURES WHICH AFFECT 1995-2001 MODEL YEAR TRANSAXLES. *TT

The document

No address for NHTSA's copy can be built for this communication. Ask the dealer for it by the manufacturer's number.

Components

Transmission and driveline

Vehicles listed
CHEVROLET CAVALIER1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003
CHEVROLET MALIBU1997, 1998, 1999, 2000, 2001, 2002, 2003
OLDSMOBILE ALERO1999, 2000, 2001, 2002, 2003
OLDSMOBILE CUTLASS1997, 1998, 1999
PONTIAC GRAND AM1999, 2000, 2001, 2002, 2003
PONTIAC SUNFIRE1995
PONTIAC SUNFIRE1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003
TOYOTA CAVALIER1999 to 2000

Listing a model year does not mean every vehicle of it is concerned: the document says which.

Recalls for the same vehicles and component
20002752000-11-27. Powertrain
00V3720002000-11-13. POWER TRAIN:MANUAL TRANSMISSION
20001102000-04-28. Powertrain

A recall listed here may apply to some of the same vehicles. Only the manufacturer can say whether it applies to one vehicle.

Other bulletins for the same vehicles and component
24-NA-1412024-08-15. Service bulletin. GM is receiving damaged (cracked or broken) transmission cores returned to the reman facilities. The damage is being caused either in the removal process by the technician, or inadequate packaging or shipping. This bulletin advises the dealers to be more careful not to damage the transmissions during removal and to package the core properly for return.
PI1394B2024-02-02. Service bulletin. This PI bulletin advises the technician on the proper way to install the pistons in an engine.
23-NA-1532023-09-26. Service bulletin. The service bulletin advises the tech of a normal transmission shift condition and the delay in throttle response when the throttle plate is opened rapidly and advises the customer that it is normal for the delay.
PIP5640A2022-10-17. Service bulletin. This Preliminary Information communication provides information to the technician to not remove the torque converter bolts and start the engine as this may cause damage to the torque converter of the crankshaft on vehicles equipped with an automatic transmission.
06-00-89-031H2022-10-11. Service bulletin. This service bulletin provides information on OEM and Remanufactured Engine and Automatic Transmission/Transaxle Identification.
22-NA-1812022-09-19. Service bulletin. This diagnostic tip advises the tech not to separate the flexplate from the torque convertor or damage my occur if the engine is started while diagnosing for noise from the engine or transmission.
06-00-89-031D2021-09-07. Service bulletin. OEM and Remanufactured Engine and Automatic Transmission/Transaxle Identification
06-00-89-031D2021-04-20. Service bulletin. OEM and Remanufactured Engine and Automatic Transmission/Transaxle Identification
02-07-30-052I2018-06-04. Service bulletin. This informational bulletin provides information for Automatic Transmission Oil Cooler Flow Test Essential Tool J-45096 TransFlow.
01-00-89-010J2018-05-21. Service bulletin. This informational bulletin provides a revision for 01-00-89-010I to add the 2013 model year.