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Service bulletin SIL 11-TR-22

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 id10218842
Published by NHTSA2022-08-29
Manufacturer's numberSIL 11-TR-22
Manufacturer's date2022-06-25
NHTSA componentPOWER TRAIN; SERVICE BRAKES

NHTSA's summary

Introduction of 9832 Rapid Warmup and Output Brake Features.

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

Brakes, Transmission and driveline

Vehicles listed
ALLISON DIV ALLISON DIV

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