TSB: ISUZU N SERIES, N-SERIES, NPR, NPR HD, NPR-HD, NQR, NRR (1994–2013)

Bulletin IB-14-X-001 — August 1, 2014

Bulletin Details

Bulletin IDIB-14-X-001
ManufacturerISUZU
ModelsN SERIES, N-SERIES, NPR, NPR HD, NPR-HD, NQR, NRR
Model Years1994–2013
Date IssuedAugust 1, 2014
Date Added to NHTSANovember 12, 2014
ComponentENGINE AND ENGINE COOLING
Vehicles Affected93 combinations

What is a TSB?

A Technical Service Bulletin is a document issued by the vehicle manufacturer to inform dealership technicians about a known issue and the recommended repair procedure. TSBs are not mandatory recalls — they serve as repair guidance for common problems.

If your vehicle has this issue, bring this bulletin ID to your dealer. If under warranty, the repair should be covered at no cost.

Summary

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

Affected Vehicles

MakeModelYearComponent
ISUZU N-SERIES 2013 060000 ENGINE AND ENGINE COOLING
ISUZU N-SERIES 2012 060000 ENGINE AND ENGINE COOLING
ISUZU NPR 2012 060000 ENGINE AND ENGINE COOLING
ISUZU NQR 2012 060000 ENGINE AND ENGINE COOLING
ISUZU N-SERIES 2011 060000 ENGINE AND ENGINE COOLING
ISUZU N-SERIES 2010 060000 ENGINE AND ENGINE COOLING
ISUZU NPR 2010 060000 ENGINE AND ENGINE COOLING
ISUZU NPR HD 2010 060000 ENGINE AND ENGINE COOLING
ISUZU NQR 2010 060000 ENGINE AND ENGINE COOLING
ISUZU NRR 2010 060000 ENGINE AND ENGINE COOLING
ISUZU N-SERIES 2009 060000 ENGINE AND ENGINE COOLING
ISUZU NPR 2009 060000 ENGINE AND ENGINE COOLING
ISUZU NPR HD 2009 060000 ENGINE AND ENGINE COOLING
ISUZU NQR 2009 060000 ENGINE AND ENGINE COOLING
ISUZU NRR 2009 060000 ENGINE AND ENGINE COOLING
ISUZU N-SERIES 2008 060000 ENGINE AND ENGINE COOLING
ISUZU NPR 2008 060000 ENGINE AND ENGINE COOLING
ISUZU NPR HD 2008 060000 ENGINE AND ENGINE COOLING
ISUZU NQR 2008 060000 ENGINE AND ENGINE COOLING
ISUZU NRR 2008 060000 ENGINE AND ENGINE COOLING
ISUZU N-SERIES 2007 060000 ENGINE AND ENGINE COOLING
ISUZU NPR 2007 060000 ENGINE AND ENGINE COOLING
ISUZU NPR HD 2007 060000 ENGINE AND ENGINE COOLING
ISUZU NQR 2007 060000 ENGINE AND ENGINE COOLING
ISUZU NRR 2007 060000 ENGINE AND ENGINE COOLING
ISUZU N-SERIES 2006 060000 ENGINE AND ENGINE COOLING
ISUZU NPR 2006 060000 ENGINE AND ENGINE COOLING
ISUZU NPR HD 2006 060000 ENGINE AND ENGINE COOLING
ISUZU NQR 2006 060000 ENGINE AND ENGINE COOLING
ISUZU NRR 2006 060000 ENGINE AND ENGINE COOLING
ISUZU N-SERIES 2005 060000 ENGINE AND ENGINE COOLING
ISUZU NPR 2005 060000 ENGINE AND ENGINE COOLING
ISUZU NPR HD 2005 060000 ENGINE AND ENGINE COOLING
ISUZU NPR-HD 2005 060000 ENGINE AND ENGINE COOLING
ISUZU NQR 2005 060000 ENGINE AND ENGINE COOLING
ISUZU NRR 2005 060000 ENGINE AND ENGINE COOLING
ISUZU N SERIES 2004 060000 ENGINE AND ENGINE COOLING
ISUZU N-SERIES 2004 060000 ENGINE AND ENGINE COOLING
ISUZU NPR 2004 060000 ENGINE AND ENGINE COOLING
ISUZU NPR-HD 2004 060000 ENGINE AND ENGINE COOLING
ISUZU NQR 2004 060000 ENGINE AND ENGINE COOLING
ISUZU NRR 2004 060000 ENGINE AND ENGINE COOLING
ISUZU N SERIES 2003 060000 ENGINE AND ENGINE COOLING
ISUZU N-SERIES 2003 060000 ENGINE AND ENGINE COOLING
ISUZU NPR 2003 060000 ENGINE AND ENGINE COOLING
ISUZU NQR 2003 060000 ENGINE AND ENGINE COOLING
ISUZU NRR 2003 060000 ENGINE AND ENGINE COOLING
ISUZU N SERIES 2002 060000 ENGINE AND ENGINE COOLING
ISUZU N-SERIES 2002 060000 ENGINE AND ENGINE COOLING
ISUZU NPR 2002 060000 ENGINE AND ENGINE COOLING
ISUZU NQR 2002 060000 ENGINE AND ENGINE COOLING
ISUZU NRR 2002 060000 ENGINE AND ENGINE COOLING
ISUZU N SERIES 2001 060000 ENGINE AND ENGINE COOLING
ISUZU N-SERIES 2001 060000 ENGINE AND ENGINE COOLING
ISUZU NPR 2001 060000 ENGINE AND ENGINE COOLING
ISUZU NPR HD 2001 060000 ENGINE AND ENGINE COOLING
ISUZU NQR 2001 060000 ENGINE AND ENGINE COOLING
ISUZU NRR 2001 060000 ENGINE AND ENGINE COOLING
ISUZU N SERIES 2000 060000 ENGINE AND ENGINE COOLING
ISUZU N-SERIES 2000 060000 ENGINE AND ENGINE COOLING
ISUZU NPR 2000 060000 ENGINE AND ENGINE COOLING
ISUZU NPR HD 2000 060000 ENGINE AND ENGINE COOLING
ISUZU NQR 2000 060000 ENGINE AND ENGINE COOLING
ISUZU NRR 2000 060000 ENGINE AND ENGINE COOLING
ISUZU N SERIES 1999 060000 ENGINE AND ENGINE COOLING
ISUZU N-SERIES 1999 060000 ENGINE AND ENGINE COOLING
ISUZU NPR 1999 060000 ENGINE AND ENGINE COOLING
ISUZU NPR HD 1999 060000 ENGINE AND ENGINE COOLING
ISUZU NQR 1999 060000 ENGINE AND ENGINE COOLING
ISUZU NRR 1999 060000 ENGINE AND ENGINE COOLING
ISUZU N SERIES 1998 060000 ENGINE AND ENGINE COOLING
ISUZU N-SERIES 1998 060000 ENGINE AND ENGINE COOLING
ISUZU NPR 1998 060000 ENGINE AND ENGINE COOLING
ISUZU NPR HD 1998 060000 ENGINE AND ENGINE COOLING
ISUZU NRR 1998 060000 ENGINE AND ENGINE COOLING
ISUZU N-SERIES 1997 060000 ENGINE AND ENGINE COOLING
ISUZU NPR 1997 060000 ENGINE AND ENGINE COOLING
ISUZU NRR 1997 060000 ENGINE AND ENGINE COOLING
ISUZU NPR 1996 060000 ENGINE AND ENGINE COOLING
ISUZU NPR HD 1996 060000 ENGINE AND ENGINE COOLING
ISUZU NRR 1996 060000 ENGINE AND ENGINE COOLING
ISUZU NPR 1995 060000 ENGINE AND ENGINE COOLING
ISUZU NPR HD 1995 060000 ENGINE AND ENGINE COOLING
ISUZU NRR 1995 060000 ENGINE AND ENGINE COOLING
ISUZU NPR 1994 060000 ENGINE AND ENGINE COOLING
ISUZU NRR 1994 060000 ENGINE AND ENGINE COOLING

Related ISUZU Recalls

CampaignModelYearComponentSummary
NPR XD 2025 ELECTRICAL SYSTEM:WIRING Isuzu Motors Limited (Isuzu) is recalling certain 2025-2027 Chevrolet Low Cab...
CHEVROLET LCF 5500XD 2026 ELECTRICAL SYSTEM:WIRING Isuzu Motors Limited (Isuzu) is recalling certain 2025-2027 Chevrolet Low Cab...
NPR XD 2026 ELECTRICAL SYSTEM:WIRING Isuzu Motors Limited (Isuzu) is recalling certain 2025-2027 Chevrolet Low Cab...
NPR HD 2026 ELECTRICAL SYSTEM:WIRING Isuzu Motors Limited (Isuzu) is recalling certain 2025-2027 Chevrolet Low Cab...
NPR HD 2025 ELECTRICAL SYSTEM:WIRING Isuzu Motors Limited (Isuzu) is recalling certain 2025-2027 Chevrolet Low Cab...

What Should You Do?

If your vehicle is affected by this TSB, contact your authorized ISUZU dealer. Bring this bulletin ID (IB-14-X-001) when you visit. If under warranty, the repair should be free. If your warranty has expired, ask about goodwill coverage — manufacturers sometimes cover TSB-related repairs beyond the warranty period.

Frequently Asked Questions

A recall is a mandatory safety fix — the manufacturer must repair every affected vehicle for free. A TSB is an advisory document that describes a known issue and the recommended fix, but repairs are not required. However, some TSBs eventually lead to recalls if the issue poses a safety risk. TSBs are generally issued for quality or performance problems, while recalls address safety defects.

If your vehicle is still under the manufacturer's warranty, TSB-related repairs are typically covered at no cost. If your warranty has expired, you can ask the dealer about goodwill or customer assistance programs. Many manufacturers will cover or partially cover repairs for well-known issues, especially if the TSB was issued recently or affects a large number of vehicles.

Check the make, model, and model year listed above against your vehicle. If they match, this bulletin likely applies. However, TSBs may only affect vehicles with specific production dates, VIN ranges, or configurations. Your dealer can confirm by entering your VIN into their service system, which will show all applicable TSBs and recalls.

This data comes from the National Highway Traffic Safety Administration (NHTSA). Manufacturers are required to submit copies of all communications (including TSBs) sent to their dealers to NHTSA. The agency makes this data publicly available as part of its vehicle safety monitoring program.