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Service bulletin SIL 33-TC10-18

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 id10152450
Published by NHTSA2019-01-07
Manufacturer's numberSIL 33-TC10-18
Manufacturer's date2018-11-16
NHTSA componentPOWER TRAIN

NHTSA's summary

Advises the service channel on the proper procedures and components for retrofitting the TC-10 transmission with a power-take-off (PTO) drive gear

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

Transmission and driveline

Vehicles listed
ALLISON TRANSMISSION

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