# Service bulletin SIL 09\-1K2K\-21 R

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.

- Type: Service bulletin
- NHTSA id: 10214179
- Published by NHTSA: 2022\-06\-21
- Manufacturer's number: SIL 09\-1K2K\-21 R
- Manufacturer's date: 2022\-05\-06
- NHTSA component: EQUIPMENT ADAPTIVE/MOBILITY; POWER TRAIN:AUTOMATIC TRANSMISSION:TORQUE CONVERTER

## NHTSA's summary

Notice seeking return of torque converter attachment lug weld

## The document

- [NHTSA's copy of the document (PDF)](https://static.nhtsa.gov/odi/tsbs/2022/MC-10214179-0001.pdf)
- [If that address does not open, try this one](https://static.nhtsa.gov/odi/tsbs/2022/MC-10214179-9999.pdf)

The document is the manufacturer's. This site does not hold it.

## Components

Equipment and accessories, Transmission and driveline, Automatic transmission, Torque converter

## Vehicles listed

- ALLISON 1000 SERIES TRANSMISSION
- ALLISON 2000 SERIES TRANSMISSION

JSON: [/v1/bulletins/10214179](/v1/bulletins/10214179)

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