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Service bulletin 020604041

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 id634685
Published by NHTSA2002-10-04
Manufacturer's number020604041
Manufacturer's date2005-09-01
Replaces020604041A
NHTSA componentFUEL SYSTEM, GASOLINE:FUEL INJECTION SYSTEM:FUEL RAIL

NHTSA's summary

DIAGNOSTIC HINTS / TROUBLESHOOTING GUIDE FOR DENSO COMMON RAIL FUEL SYSTEM FOR CERTAIN MEDIUM DUTY TILT CAB AND COMMERCIAL MODELS. *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

Fuel system, Fuel injection

Vehicles listed
CHEVROLET T SERIES1999, 2000, 2001, 2002
GMC T SERIES2000, 2001, 2002
ISUZU FRR2000, 2001, 2002, 2003
ISUZU FSR1998 to 2002
ISUZU FTR1998 to 2002
ISUZU FVR1998 to 2002

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