# Service bulletin PIT6393G

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: 11026496
- Published by NHTSA: 2025\-12\-08
- Manufacturer's number: PIT6393G
- Manufacturer's date: 2025\-12\-05
- NHTSA component: UNKNOWN OR OTHER

## NHTSA's summary

This Preliminary Information is to inform customers to follow diagnostics if resetting, disconnecting the module did not correct it. It also informs them to follow the bulletins as necessary to USB update the modules.

## The document

- [NHTSA's copy of the document (PDF)](https://static.nhtsa.gov/odi/tsbs/2025/MC-11026496-0001.pdf)
- [If that address does not open, try this one](https://static.nhtsa.gov/odi/tsbs/2025/MC-11026496-9999.pdf)

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

## Vehicles listed

- 2024 BRIGHTDROP ZEVO 400
- 2024 BRIGHTDROP ZEVO 600
- 2025 to 2026 BUICK ENCLAVE
- 2024 to 2025 BUICK ENVISION
- 2025 CADILLAC CT5
- 2025 CADILLAC ESCALADE
- 2025 CADILLAC ESCALADE ESV
- 2025 CADILLAC ESCALADE IQ
- 2024 to 2025 CADILLAC LYRIQ
- 2025 CADILLAC OPTIQ
- 2026 CADILLAC VISTIQ
- 2024 to 2025 CADILLAC XT4
- 2024 to 2025 CHEVROLET BLAZER EV
- 2025 CHEVROLET BRIGHTDROP 400
- 2025 CHEVROLET BRIGHTDROP 600
- 2024 to 2025 CHEVROLET COLORADO
- 2026 CHEVROLET CORVETTE CONVERTIBLE
- 2026 CHEVROLET CORVETTE CONVERTIBLE E\-RAY
- 2026 CHEVROLET CORVETTE COUPE
- 2026 CHEVROLET CORVETTE COUPE E\-RAY
- 2024 to 2026 CHEVROLET EQUINOX
- 2024 to 2025 CHEVROLET EQUINOX EV
- 2024 to 2025 CHEVROLET SILVERADO 1500
- 2025 CHEVROLET SUBURBAN 1500
- 2025 CHEVROLET TAHOE
- 2024 to 2026 CHEVROLET TRAVERSE
- 2024 to 2026 GMC ACADIA
- 2024 to 2025 GMC CANYON
- 2026 GMC HUMMER EV PICKUP
- 2026 GMC HUMMER EV SUV
- 2024 to 2025 GMC SIERRA EV
- 2025 to 2026 GMC TERRAIN
- 2025 GMC YUKON
- 2025 GMC YUKON XL

JSON: [/v1/bulletins/11026496](/v1/bulletins/11026496)

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