Service bulletins for the 2020 Isuzu NPR-XD
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.
10 on file from NHTSA, as of 2026-10-19.
By type
By component
Only bulletins with component: Fuel system are shown. Show all
| IB08-X-002 | 2020-08-24. Service bulletin. EQUIPMENT:OTHER:LABELS; FUEL SYSTEM, DIESEL; EQUIPMENT. ISUZU DIESEL ENGINES AVAILABLE IN THE ABOVE AFFECTED VEHICLES MEET THE CALIFORNIA AIR RESOURCE BOARD'S (CARB) OPTIONAL IDLING EMISSIONS STANDARD OF 30 GRAMS PER HOUR OF OXIDES OF NITROGEN (NOX) WITH NO INCREASE IN THE EMISSION OF OTHER REGULATED POLLUTANTS. AS A RESULT THESE VEHICLES HAVE BEEN APPROVED AS "CERTIFIED CLEAN IDLE" AND ARE "EXEMPT" FROM THE ENGINE SHUTDOWN SYSTEM (ESS) REQUIREMNET PURSUANT OT SECTION 1956.8 OF TITLE 13, CALIFORNIA CODE OF REGULATIONS. AS REQUIRED BY THE ESS REGULATION, FOR "CERTIFICED CLEAN IDLE" VEHICLES, ISUZU HAS INTRODUCED A TAMPER RESISTANCE "CERTIFIED CLEAN IDLE" LABEL LOCATED ON THE DRIVER'S SIDE DOOR PANEL. IT IS IMPORTANT THAT THIS LABEL REMAIN, PERMANENTLY, ON THE VEHICLE TO IDENTIFY IT AS "CERTIFIED CLEAN IDLE." CARB REQUIRES THIS LABEL AS EVIDENCE THAT, AT HTE TIME OF MANUFACTURE, THE ENGINE INSTALLED MET THE APPLICABLE EMISSION STANDARDS. SHOULD THE LABEL BE FOUND MISSING OR DAMGED DURING AN INSPECTION, A CITATION AND PENALTIES MAY BE ISSUED. IF THE VEHICLE IS OPERATED IN CALIFORNIA WITH A DAMAGED OR MISSING CLEAN IDLE LABEL, ISUZU RECOMMENDS VEHICLE OPERATORS FOLLOW THE 5 MINUTE ESS REQUIREMENT BY MANUALLY TURNING OFF THE ENGINE. FOLLOWING THIS ESS REQUIREMNET WILL KEEP THE VEHICLE OPERATION COMPLIANT UNTIL A REPLACEMENT LABEL CAN BE INSTALLED. "CLEAN AIR IDLE" LABELS ARE PRINTED WITH A SERIAL NUMBER AND REGISTERED TO AN INDIVIDUAL VIN. AS A RESULT, A REPLACEMNET LABEL WILL ALSO INCLUDE A NEW SERIAL NUMBER WHICH MUST BE REGISTERED TO THE VEHICLE'S VIN BY THE MANUFACTURER. THE BELOW INFORMATION IS PROVIDED TO ASSIT IN ACQUIRING, REPLACING AND REGISTERING A REPLACEMENT LABEL. |
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| IB11-L-003C | 2020-08-24. Service bulletin. FUEL SYSTEM, DIESEL:DELIVERY:HOSES, LINES/PIPING, AND FITTINGS; ENGINE AND ENGINE COOLING:ENGINE:DIESEL. THIS INFORMATION IS BEING ISSUED TO HELP DEALERS IDENTIFY APOTENETIAL SOURCE FOR FUEL CONTAMINATION. IF A CUSTOMER'S COMPLAINT LEADS TO THE DISCOVERY OF CONTAMINATED FUEL, THE SOURCE OF THE CONTAMINATION MUST BE FOUND AND REPAIRED. CONTAMINATED FUEL MAY RESULT IN MANY DIFFERENT FAILURES. SOME EXAMPLES OF THESE FAILURES ARE: PLUGGED FUEL FILTERS, POOR ENGINE PERFORMACE, CHECK ENGINE LIGHT ILLUMINATION, FUEL SYSTEM (LINES AND TANK) CORROSION (RUST), ETC... ISUZU'S FAILURE INVESTIGATIONS HAVE FOUND A COMMON OCCURANCE OF THE FUEL FILLER NECK BEING INSTALLED INCORRECTLY. THIS POOR INSTALLATION WILL ALLOW UNWANTED MATERIAL TO ENTER THE FUEL TANK CONTAMINATING THE FUEL. USE THE INFORMATION BELOW TO CONFIRM THE FUEL FILLER NECK IS INSTALLED CORRECTLY. IF THE FILLER NECK INSTALLATION IS INCORRECT, USE THE INFORMATION BELOW TO REPAIR THE FUEL FILLER NECK. DETAILED INFORMATION REGARDING FUEL FILLER NECK INSTALLATION CAN BE FOUND IN ISUZU'S BODY BUILDER GUIDE. |
The summaries are NHTSA's. Each bulletin's page links NHTSA's copy of the manufacturer's document.