# Service bulletin SIL 05\-EP\-20EN

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: 10175420
- Published by NHTSA: 2020\-05\-26
- Manufacturer's number: SIL 05\-EP\-20EN
- Manufacturer's date: 2020\-04\-16
- NHTSA component: ELECTRICAL SYSTEM

## NHTSA's summary

Instruction to service channel to familiarize themselves with safe electrical work practices when working on the high voltage electrical system of the H 40/50 EP transmission

## The document

- [NHTSA's copy of the document (PDF)](https://static.nhtsa.gov/odi/tsbs/2020/MC-10175420-0001.pdf)
- [If that address does not open, try this one](https://static.nhtsa.gov/odi/tsbs/2020/MC-10175420-9999.pdf)

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

## Components

Electrical system

## Vehicles listed

- ALLISON TRANSMISSION, INC B SERIES
- ALLISON TRANSMISSION, INC B300 SERIES TRANSMISSION
- ALLISON TRANSMISSION, INC B3400
- ALLISON TRANSMISSION, INC B400 SERIES TRANSMISSION
- ALLISON TRANSMISSION, INC H 40 EP TRANSMISSION
- ALLISON TRANSMISSION, INC H 50 EP TRANSMISSION
- ALLISON TRANSMISSION, INC T SERIES
- ALLISON TRANSMISSION, INC T100 SERIES TRANSMISSION
- ALLISON TRANSMISSION, INC T200 SERIES TRANSMISSION
- ALLISON TRANSMISSION, INC T300 SERIES TRANSMISSION
- ALLISON TRANSMISSION, INC T3280
- ALLISON TRANSMISSION, INC T3325
- ALLISON TRANSMISSION, INC T3375
- ALLISON TRANSMISSION, INC T400 SERIES TRANSMISSION
- ALLISON TRANSMISSION, INC TC10 SERIES TRANSMISSION

JSON: [/v1/bulletins/10175420](/v1/bulletins/10175420)

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