# Service bulletin PIT6398

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: 11019827
- Published by NHTSA: 2025\-06\-29
- Manufacturer's number: PIT6398
- Manufacturer's date: 2025\-06\-12
- NHTSA component: UNKNOWN OR OTHER

## NHTSA's summary

This PI involves DTC U3000 SYM49 Set falsely In The Serial Data Gateway Module and dealerships are to reset the module by cycling the battery.

## The document

- [NHTSA's copy of the document (PDF)](https://static.nhtsa.gov/odi/tsbs/2025/MC-11019827-0001.pdf)
- [If that address does not open, try this one](https://static.nhtsa.gov/odi/tsbs/2025/MC-11019827-9999.pdf)

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

## Trouble codes named

U3000

## Vehicles listed

- 2021 to 2023 CADILLAC CT4
- 2021 to 2023 CADILLAC CT5
- 2021 to 2023 CADILLAC ESCALADE
- 2021 to 2023 CADILLAC ESCALADE ESV
- 2021 to 2022 CHEVROLET CORVETTE
- 2024 to 2025 CHEVROLET SILVERADO 2500
- 2024 to 2025 CHEVROLET SILVERADO 3500
- 2021 to 2023 CHEVROLET SUBURBAN 1500
- 2021 to 2023 CHEVROLET TAHOE
- 2024 to 2025 GMC SIERRA 2500
- 2024 to 2025 GMC SIERRA 3500
- 2021 to 2023 GMC YUKON
- 2021 to 2023 GMC YUKON XL

JSON: [/v1/bulletins/11019827](/v1/bulletins/11019827)

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