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Service bulletin CB21-X-001A

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 id10190785
Published by NHTSA2021-04-26
Manufacturer's numberCB21-X-001A
Manufacturer's date2021-03-26
NHTSA componentEQUIPMENT

NHTSA's summary

CONDITION IN SOME 2020MY ISUZU N-SERIES TRUCKS EQUIPPED WITH 6.6L L8T GASOLINE ENGINES, THE INFORMATION IN THE VEHICLES' OWNER MANUAL REGARDING ENGINE OIL CAPCITY DURING MAINTENANCE IS INACCURATE. AS A RESULT, ATECHNICIAN OR OTHER PERSON WHO RELIES ON THE VEHICLE'S OWNER MANUAL WHEN REFILLING THE ENGINE OIL MAY PUT IN AN INACCURATE AMOUNT. CORRECTION ISUZU DEALERS ARE TO REPLACE THE OWNER MANUALS OF NEW AFFECTED VEHICLES IN THEIR INVENTORY. THE RELEVANT PAGES OF THE OWNER MANUAL REGARDING THE PROPER OIL LEVEL HAVE BEEN CORRECTED AND REPLACED. OWNERS OF AFFECTED VEHICLES WILL RECEIVE A NOTIFICATION THAT WILL INCLUDE A NEW (CORRECTED) OWNER MANUAL. IF ANY CUSTOMERS BRING AN AFFECTED VEHICLE TO YOUR DEALERSHIP AND HAVE NOT RECEIVED A NOTICE ABOUT THIS CAMPAIGN ALONG WITH ANEW OWNER MANUAL, YOU MAY PROVIDE THEM WITH THE CORRECTED OWNER MANUAL. THIS SERVICE WILL BE PROVIDED FREE OF CHARGE.

The document

The document is the manufacturer's. This site does not hold it. NHTSA files a document at one of these two addresses; we have not asked NHTSA which.

Components

Equipment and accessories

Vehicles listed
ISUZU N-SERIES2020

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