# Service bulletin PIT6521

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: 11033988
- Published by NHTSA: 2026\-06\-18
- Manufacturer's number: PIT6521
- Manufacturer's date: 2026\-06\-09
- NHTSA component: UNKNOWN OR OTHER

## NHTSA's summary

This PI advises dealers that if DTC P0606 and/or P0607 are set in the K160 EBCM, additional diagnostic aids should be followed to ensure the module requires replacement

## The document

- [NHTSA's copy of the document (PDF)](https://static.nhtsa.gov/odi/tsbs/2026/MC-11033988-0001.pdf)
- [If that address does not open, try this one](https://static.nhtsa.gov/odi/tsbs/2026/MC-11033988-9999.pdf)

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

## Trouble codes named

P0606, P0607

## Vehicles listed

- 2025 BUICK ENCLAVE
- 2023 to 2026 CHEVROLET COLORADO
- 2024 to 2025 CHEVROLET TRAVERSE
- 2023 to 2026 GMC CANYON

JSON: [/v1/bulletins/11033988](/v1/bulletins/11033988)

[Report an error on this page](https://github.com/wenmar-pro/wenmar-open/issues/new?template=data_correction.yml&title=Data%20correction%3A%20Service%20bulletin%20PIT6521&page=https%3A%2F%2Fopen.wenmarpro.com%2Fbulletins%2F11033988&vehicle=Service%20bulletin%20PIT6521)