Service bulletins for the 1999 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.
31 on file from NHTSA, as of 2026-10-19.
By type
By component
Only bulletins with component: EGR valve are shown. Show all
| SB0001C005 | 2001-01-28. Service bulletin. ENGINE AND ENGINE COOLING:EXHAUST SYSTEM:EMISSION CONTROL:GAS RECIRCULATION VALVE (EGR VALVE). SOME 1999 - CURRENT MODEL VEHICLES, DRIVEN DURING EXTREME COLD WEATHER CONDITIONS, MAY EXPERIENCE PCV SYSTEM FREEZE UP, CAUSING THE REAR MAIN SEAL TO LEAK. *TT |
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The summaries are NHTSA's. Each bulletin's page links NHTSA's copy of the manufacturer's document.