# Service bulletin PIT5989C

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: 11017267
- Published by NHTSA: 2025\-04\-28
- Manufacturer's number: PIT5989C
- Manufacturer's date: 2025\-04\-16
- NHTSA component: UNKNOWN OR OTHER

## NHTSA's summary

This Preliminary information communicates a issue where the Can bus 1 data line is being corrupted by a aftermarket lighting module or poor connection installed by a Police Upfitter.

## The document

- [NHTSA's copy of the document (PDF)](https://static.nhtsa.gov/odi/tsbs/2025/MC-11017267-0001.pdf)
- [If that address does not open, try this one](https://static.nhtsa.gov/odi/tsbs/2025/MC-11017267-9999.pdf)

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

## Vehicles listed

- 2021 to 2025 CHEVROLET TAHOE

JSON: [/v1/bulletins/11017267](/v1/bulletins/11017267)

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