# Service bulletin PIT6393J

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: 11029962
- Published by NHTSA: 2026\-03\-11
- Manufacturer's number: PIT6393J
- Manufacturer's date: 2026\-03\-06
- 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.

## The document

- [NHTSA's copy of the document (PDF)](https://static.nhtsa.gov/odi/tsbs/2026/MC-11029962-0001.pdf)
- [If that address does not open, try this one](https://static.nhtsa.gov/odi/tsbs/2026/MC-11029962-9999.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 2026 BUICK ENVISION
- 2025 to 2026 CADILLAC CT5
- 2025 to 2026 CADILLAC ESCALADE
- 2025 to 2026 CADILLAC ESCALADE ESV
- 2025 to 2026 CADILLAC ESCALADE IQ
- 2024 to 2026 CADILLAC LYRIQ
- 2025 to 2026 CADILLAC OPTIQ
- 2026 CADILLAC VISTIQ
- 2024 to 2025 CADILLAC XT4
- 2026 CADILLAC XT4
- 2024 to 2026 CHEVROLET BLAZER EV
- 2025 CHEVROLET BRIGHTDROP 400
- 2025 CHEVROLET BRIGHTDROP 600
- 2024 to 2026 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 2026 CHEVROLET EQUINOX EV
- 2024 to 2026 CHEVROLET SILVERADO EV
- 2025 to 2026 CHEVROLET SUBURBAN 1500
- 2025 to 2026 CHEVROLET TAHOE
- 2024 to 2026 CHEVROLET TRAVERSE
- 2024 to 2026 GMC ACADIA
- 2024 to 2026 GMC CANYON
- 2026 GMC HUMMER EV PICKUP
- 2026 GMC HUMMER EV SUV
- 2024 to 2026 GMC SIERRA EV
- 2025 to 2026 GMC TERRAIN
- 2025 to 2026 GMC YUKON
- 2025 to 2026 GMC YUKON XL

JSON: [/v1/bulletins/11029962](/v1/bulletins/11029962)

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