WenmarOpen by Wenmar Pro

Service bulletins for the 2003 Isuzu NQR

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.

25 on file from NHTSA, as of 2026-10-19.

By type

By component

By trouble code

Only bulletins with component: Engine are shown. Show all

Bulletins, newest first
IB09-X-004C2022-08-02. Service bulletin. ENGINE AND ENGINE COOLING; EQUIPMENT ADAPTIVE/MOBILITY; EQUIPMENT. The Isuzu Commercial Truck of America (ICTA) Service Technical Assistance Center (TAC) provides diagnostic support to Isuzu dealer technicians repairing Isuzu vehicles in and out of vehicle warranty. A TAC case number will be issued solely for information tracking purposes and future contact reference.
IB-14-X-0012014-11-13. Service bulletin. ENGINE AND ENGINE COOLING. ISUZU: INFORMATION REGARDING CORROSION INHIBITOR IMPROVEMENT THAT CHANGES COLOR OF COOLANT TO A DARK COLOR AND IS ADDED AT PORT TO BOTH RADIATOR AND SURGE TANK. *PE
0506010142005-11-07. Service bulletin. ENGINE AND ENGINE COOLING:ENGINE. OIL LEAK UNDER EXTREME COLD TEMPERATURES (-34 DEGREES C) (-30 DEGREES F) OR COLDER). *TT
0506040212005-05-14. Service bulletin. ENGINE AND ENGINE COOLING:EXHAUST SYSTEM:EMISSION CONTROL. REVISED INSPECTION/MAINTENANCE (I/M) EVAPORATIVE EMISSION (EVAP) SYSTEM SET PROCEDURE. *TT
0106040482005-03-10. Service bulletin. ENGINE AND ENGINE COOLING:ENGINE. AVAILABILITY OF NEW FUEL INJECTION PUMP OIL SUPPLY PIPE FOR REPLACEMENT AFTER REMOVAL. *TT
0306040632004-03-04. Service bulletin. ENGINE AND ENGINE COOLING:ENGINE. MI-TICS INJECTION PUMP EXCHANGE PROGRAM/WARRANTY GUIDELINES EFFECTIVE OCTOBER 1, 2003. *TT
030604002A2004-02-11. Service bulletin. ENGINE AND ENGINE COOLING:ENGINE. VEHICLE NO-START IN EXTREME COLD. *TT
0306040662004-02-10. Service bulletin. ENGINE AND ENGINE COOLING:ENGINE. THROTTLE POSITION SENSOR REPLACEMENT PROCEDURE. *TT
0306040332003-09-29. Service bulletin. ENGINE AND ENGINE COOLING:ENGINE. REVISED DIAGNOSTIC TROUBLE CODE P0336. *TT UPDATE. TO INCLUDE 2004 ISUZU NQR COMMERCIAL MODELS. *TT
0306040022003-04-09. Service bulletin. ENGINE AND ENGINE COOLING:ENGINE. VEHICLE NO-START IN EXTREME COLD. *TT

The summaries are NHTSA's. Each bulletin's page links NHTSA's copy of the manufacturer's document.