# Service bulletin PIT6554

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: 11038164
- Published by NHTSA: 2026\-10\-06
- Manufacturer's number: PIT6554
- Manufacturer's date: 2026\-10\-02
- NHTSA component: UNKNOWN OR OTHER

## NHTSA's summary

This preliminary information is to help technicians decide if the DTC needs to be diagnosed if relating to the concern and if it is not, the DTC can be ignored.

## The document

- [NHTSA's copy of the document (PDF)](https://static.nhtsa.gov/odi/tsbs/2026/MC-11038164-0001.pdf)
- [If that address does not open, try this one](https://static.nhtsa.gov/odi/tsbs/2026/MC-11038164-9999.pdf)

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

## Vehicles listed

- 2026 to 2027 CADILLAC ESCALADE
- 2026 to 2027 CADILLAC ESCALADE ESV
- 2027 CADILLAC ESCALADE IQ
- 2027 CADILLAC ESCALADE IQL
- 2027 CHEVROLET SILVERADO EV
- 2026 to 2027 CHEVROLET SUBURBAN 1500
- 2026 to 2027 CHEVROLET TAHOE
- 2027 GMC HUMMER EV PICKUP
- 2027 GMC HUMMER EV SUV
- 2027 GMC SIERRA EV
- 2026 to 2027 GMC YUKON
- 2026 to 2027 GMC YUKON XL

JSON: [/v1/bulletins/11038164](/v1/bulletins/11038164)

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