# Service bulletin PIT6445B

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: 11026727
- Published by NHTSA: 2025\-12\-22
- Manufacturer's number: PIT6445B
- Manufacturer's date: 2025\-12\-19
- NHTSA component: UNKNOWN OR OTHER

## NHTSA's summary

This PI communicates information that the Collision / Detection Systems will revert to default setting of Alert and Brake after an Ignition Cycle due to an Engineering change.

## The document

- [NHTSA's copy of the document (PDF)](https://static.nhtsa.gov/odi/tsbs/2025/MC-11026727-0001.pdf)
- [If that address does not open, try this one](https://static.nhtsa.gov/odi/tsbs/2025/MC-11026727-9999.pdf)

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

## Vehicles listed

- 2026 BUICK ENCLAVE
- 2026 CADILLAC ESCALADE
- 2026 CADILLAC ESCALADE ESV
- 2026 CADILLAC ESCALADE IQ
- 2026 CADILLAC ESCALADE IQL
- 2026 CADILLAC LYRIQ
- 2026 CADILLAC OPTIQ
- 2026 CADILLAC VISTIQ
- 2026 CADILLAC XT4
- 2026 CHEVROLET COLORADO
- 2026 CHEVROLET CORVETTE CONVERTIBLE
- 2026 CHEVROLET CORVETTE CONVERTIBLE E\-RAY
- 2026 CHEVROLET CORVETTE COUPE
- 2026 CHEVROLET CORVETTE COUPE E\-RAY
- 2026 CHEVROLET EQUINOX
- 2026 CHEVROLET EQUINOX EV
- 2026 CHEVROLET SILVERADO EV
- 2026 CHEVROLET SUBURBAN 1500
- 2026 CHEVROLET TAHOE
- 2026 CHEVROLET TRAVERSE
- 2026 GMC ACADIA
- 2026 GMC CANYON
- 2026 GMC HUMMER EV PICKUP
- 2026 GMC HUMMER EV SUV
- 2026 GMC SIERRA EV
- 2026 GMC TERRAIN
- 2026 GMC YUKON
- 2026 GMC YUKON XL

JSON: [/v1/bulletins/11026727](/v1/bulletins/11026727)

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