# Service bulletin PIT6477B

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: 11028935
- Published by NHTSA: 2026\-02\-23
- Manufacturer's number: PIT6477B
- Manufacturer's date: 2026\-02\-17
- NHTSA component: UNKNOWN OR OTHER

## NHTSA's summary

This preliminary PI was created to advise technians in the field that they will not be able to perform a GDS automated bleed with the scan tool dues to a issue with the software in the scan tool

## The document

- [NHTSA's copy of the document (PDF)](https://static.nhtsa.gov/odi/tsbs/2026/MC-11028935-0001.pdf)
- [If that address does not open, try this one](https://static.nhtsa.gov/odi/tsbs/2026/MC-11028935-9999.pdf)

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

## Vehicles listed

- 2026 CADILLAC ESCALADE
- 2026 CADILLAC ESCALADE ESV
- 2026 CHEVROLET SUBURBAN 1500
- 2026 CHEVROLET TAHOE
- 2026 GMC YUKON
- 2026 GMC YUKON XL

JSON: [/v1/bulletins/11028935](/v1/bulletins/11028935)

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