# Service bulletin PIT6480

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: 11027928
- Published by NHTSA: 2026\-02\-01
- Manufacturer's number: PIT6480
- Manufacturer's date: 2026\-01\-29
- NHTSA component: UNKNOWN OR OTHER

## NHTSA's summary

This preliminary information communicates an issue with how to repair a brake fluid leak at the B356 Brake Pipe Pressure Switch connector.

## The document

- [NHTSA's copy of the document (PDF)](https://static.nhtsa.gov/odi/tsbs/2026/MC-11027928-0001.pdf)
- [If that address does not open, try this one](https://static.nhtsa.gov/odi/tsbs/2026/MC-11027928-9999.pdf)

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

## Vehicles listed

- 2019 to 2024 CHEVROLET SILVERADO 4500
- 2019 to 2021 CHEVROLET SILVERADO 5500
- 2023 to 2024 CHEVROLET SILVERADO 5500
- 2019 to 2024 CHEVROLET SILVERADO 6500

JSON: [/v1/bulletins/11027928](/v1/bulletins/11027928)

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