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Service bulletin IB10-K-001C

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 id10099069
Published by NHTSA2017-05-15
Manufacturer's numberIB10-K-001C
Manufacturer's date2017-03-01
NHTSA componentPOWER TRAIN:AUTOMATIC TRANSMISSION

NHTSA's summary

WE HAVE DETERMINED THAT SOME REPLACEMENT TRANSMISSIONS MAY HAVE FAILED OR REQUIRED A SECOND REPLACEMENT DUE TO INCORRECT FLANGE NUT REMOVAL OR INSTALLATION. WHEN PERFORMING REPAIRS ON AN AISIN TRANSMISSION ASSEMBLY THAT REQUIRE THE REMOVAL OF THE OUTPUT FLANGE NUT (ALSO CALLED COUPLING DRIVER NUT), MAKE SURE TO COMPLY WITH THE FOLLOWING GUIDELINES.

The document

No address for NHTSA's copy can be built for this communication. Ask the dealer for it by the manufacturer's number.

Components

Transmission and driveline, Automatic transmission

Vehicles listed
CHEVROLET W-SERIES
GMC W-SERIES
ISUZU N SERIES

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