# Service bulletin sb54278

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: 10189102
- Published by NHTSA: 2021\-03\-15
- Manufacturer's number: sb54278
- Manufacturer's date: 2017\-08\-01
- NHTSA component: ELECTRICAL SYSTEM; ELECTRICAL SYSTEM:12V/24V/48V BATTERY

## NHTSA's summary

sb54278 Powernet Troubleshooting Guide Batteries, Path, Alternator and Starter

## The document

- [NHTSA's copy of the document (PDF)](https://static.nhtsa.gov/odi/tsbs/2017/MC-10189102-0001.pdf)
- [If that address does not open, try this one](https://static.nhtsa.gov/odi/tsbs/2017/MC-10189102-9999.pdf)

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

## Components

Electrical system, 12\-volt battery

## Vehicles listed

- WESTERN STAR WESTERN STAR

JSON: [/v1/bulletins/10189102](/v1/bulletins/10189102)

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