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Service bulletin 020604057B

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 id10002839
Published by NHTSA2003-09-26
Manufacturer's number020604057B
Manufacturer's date2003-06-01
Replaces020604057A
NHTSA componentENGINE AND ENGINE COOLING:ENGINE

NHTSA's summary

LABOR OPERATION ASSIGNMENTS FOR CONTROL MODULE REPROGRAMMING. *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

Engine

Vehicles listed
BUICK BUICK2003
CADILLAC CADILLAC2003
CHEVROLET KODIAK2003
GMC TOPKICK2003
HUMMER H22003
OLDSMOBILE OLDSMOBILE2003
PONTIAC PONTIAC2003

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

Other bulletins for the same vehicles and component
03-06-01-023I2025-01-17. Service bulletin. This service bulletin explains how to measure for oil consumption and possible reasons for loss of oil.
03-06-01-023H2024-11-14. Service bulletin. This service bulletin explains how to measure for oil consumption and possible reasons for loss of oil.
16-NA-3832024-03-19. Service bulletin. This technical bulletin advises of a new fuel injection cleaner kit used for decarbonizing the intake valves to correct conditions of rough idle, Crank no start, extended crank or misfire, MIL with DTCs, and explains how Top Tier fuels should be used to reduce carbon build-up.
22-NA-0742024-02-29. Service bulletin. This service bulletin provides service information to technicians on guidelines to replace Oil Cooler, Oil Cooler Lines and Oil Tank if the engine was replaced where large amounts of debris has flowed throughout the oiling system.
PI1394B2024-02-02. Service bulletin. This PI bulletin advises the technician on the proper way to install the pistons in an engine.
1300890092023-12-11. Service bulletin. Expanded Availability for Remanufacture and Return (R&R) Electronic Control Modules
PIP5628G2023-09-18. Service bulletin. This Preliminary information communicates information that will need to be provided to TAC to aid in diagnosing if a vehicle comes in with misfire and DTC Codes P0300 - P0308 and/or P050D
18-NA-0732023-09-15. Service bulletin. This service bulletin provides graphics, information and guidelines for engine component wear to assist service personnel as a guideline to perform necessary engine repairs and prevent unnecessary engine replacement.
03-06-01-023G2023-08-03. Service bulletin. This service bulletin explains how to measure for oil consumption and possible reasons for loss of oil.
PIP5628F2023-05-15. Service bulletin. This Preliminary information communicates information that will need to be provided to TAC to aid in diagnosing if a vehicle comes in with misfire and DTC Codes P0300 - P0308 and/or P050D