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Service bulletin 030730056

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 id10005566
Published by NHTSA2004-03-04
Manufacturer's number030730056
Manufacturer's date2003-11-01
NHTSA componentPOWER TRAIN:AUTOMATIC TRANSMISSION

NHTSA's summary

4L60-E AUTOMATIC TRANSMISSION OIL PUMP FIRST AND SECOND DESIGN IDENTIFICATION. *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, Automatic transmission

Vehicles listed
CADILLAC ESCALADE2002, 2003, 2004
CHEVROLET ASTRO1997 to 2004
CHEVROLET AVALANCHE2002, 2003, 2004
CHEVROLET BLAZER1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004
CHEVROLET CAMARO1997, 1998, 1999, 2000, 2001, 2002
CHEVROLET COLORADO2004
CHEVROLET CORVETTE1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004
CHEVROLET EXPRESS1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004
CHEVROLET S101997 to 2004
CHEVROLET SILVERADO1999, 2000, 2001, 2002, 2003, 2004
CHEVROLET SSR2004
CHEVROLET SUBURBAN1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004
CHEVROLET TAHOE2000, 2001, 2002, 2003, 2004
CHEVROLET TRAILBLAZER2002, 2003, 2004
GMC CANYON2004
GMC DENALI1999 to 2003
GMC ENVOY1997 to 2001
GMC ENVOY2002, 2003, 2004
GMC JIMMY1997 to 2001
GMC SAFARI1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004
GMC SAVANA1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004
GMC SIERRA1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004
GMC SONOMA1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004
GMC SUBURBAN1997, 1998, 1999
GMC YUKON2000, 2001, 2002, 2003, 2004
HUMMER H22003, 2004
OLDSMOBILE BRAVADA1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004
PONTIAC FIREBIRD1997, 1998, 1999, 2000, 2001, 2002

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

Recalls for the same vehicles and component
04V3200002004-07-06. POWER TRAIN:AUTOMATIC TRANSMISSION:LEVER AND LINKAGE:COLUMN SHIFT
03V0750002003-03-06. POWER TRAIN:AUTOMATIC TRANSMISSION

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
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
PIP3330D2019-06-10. Service bulletin. This Preliminary Information Document advises the dealer that there is a software update available for the Powertrain Control Module to address diagnostic trouble code P0171. If the software update does not correct the condition, the dociment directs the dealer to related technical servce bulletins that cover cleaning fuel injectors and addressing fuel quality.
PIP3366C2018-08-20. Service bulletin. This Preliminary information communicates to the dealer technician thatLight Duty Trucks equipped with automatic transmissions and 4 wheel drive may exhibit a condition of grinding/ratcheting type noise when shifting the automatic transmission into park while the transfer case is in 4 wheel drive low (4LO) range. Dealers technician's are advised this condition should be deemed a normal characteristic of 4WD low operation.
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.
PIP53462017-08-15. Service bulletin. This Preliminary Information communication provides information to the technician about cooler line fittings that come with the 4T65E General Motors remanufactured transmission may not be the same as Original equipment manufacturer quick connect verses inverted flare. Dealer will need to contact General Motors Technical Assistance Center for further assistance.
PIP3161H2017-08-15. Service bulletin. This Preliminary Information communication provides information to the technician about vehicle with a clunk type noise on start up with the vehicle in park when the vehicle is equipped Allison LCT1000 transmission. This condition is considered to be an operating characteristic of the Allison LCT1000 transmission.
02-07-30-052J2017-08-15. Service bulletin. This informational bulletin provides technicians with information regarding automatic transmission oil cooler flow test essential tool J-45096 TransFlow®.
PIP3161F2017-08-15. Service bulletin. This Preliminary Information communication provides information to the technician about vehicles with a clunk type noise on start up with the vehicle in park when the vehicle is equipped Allison LCT1000 transmission. This condition is considered to be an operating characteristic of the Allison LCT1000 transmission.
PIP3497B2017-08-15. Service bulletin. This Preliminary Information communication provides information to the technician about vehicles that have no forward or reverse. Technician will need to check for metal debris in torque converter clutch valve.