# Service bulletin CSR 504

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: 10179803
- Published by NHTSA: 2020\-09\-16
- Manufacturer's number: CSR 504
- Manufacturer's date: 2020\-09\-14
- NHTSA component: ELECTRICAL SYSTEM

## NHTSA's summary

PTO Disabled Due to Engine Shutdown Altec has been notified of a customer satisfaction campaign by General Motors. It is possible that certain 2019–2020 model year Chevrolet Silverado 4500HD/5500HD/6500HD vehicles equipped with an aerial device may have a condition in which the aerial device operator could be stranded if the engine received a command for shut down. The vehicle is functioning as designed; however, aerial device applications were not clearly understood during the development of the power take off module \(PTOM\). The inspection and repair will be done by an authorized GM/Chevrolet Medium Duty Servicing dealer

## The document

- [NHTSA's copy of the document (PDF)](https://static.nhtsa.gov/odi/tsbs/2020/MC-10179803-0001.pdf)
- [If that address does not open, try this one](https://static.nhtsa.gov/odi/tsbs/2020/MC-10179803-9999.pdf)

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

## Components

Electrical system

## Vehicles listed

- 2019 to 2020 ALTEC AERIAL DEVICE

JSON: [/v1/bulletins/10179803](/v1/bulletins/10179803)

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