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Service bulletin SIL 60-TR-81 Rev

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 id10190573
Published by NHTSA2021-04-26
Manufacturer's numberSIL 60-TR-81 Rev
Manufacturer's date2021-03-08
NHTSA componentPOWER TRAIN

NHTSA's summary

Service information related to measurements and inspections for tolerances to ensure proper balance between the engine and transmission mating components

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.