# Over\-the\-air update 654.20

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: Over\-the\-air update
- NHTSA id: 11029900
- Published by NHTSA: 2026\-03\-07
- Manufacturer's number: 654.20
- Manufacturer's date: 2026\-02\-27
- Campaign id or software version: 654.20
- NHTSA component: UNKNOWN OR OTHER
- Manufacturer's system: BCM: BCM \(Body Control Module\)

## NHTSA's summary

• Fixes to help ensure proper functionality for heating and cooling features. • Improvements to night mode lights for shifting gears. • Fixes for Daytime Running Lamps turning on when set to Off. • Fixes to help prevent erroneous missing key messages on driver display. • Fixes for accuracy of low tire pressure alert. • Fixes for speed threshold for pedestrian alerts.

## The document

- [NHTSA's copy of the document (PDF)](https://static.nhtsa.gov/odi/tsbs/2026/MC-11029900-0001.pdf)
- [If that address does not open, try this one](https://static.nhtsa.gov/odi/tsbs/2026/MC-11029900-9999.pdf)

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

## Vehicles listed

- 2024 CADILLAC ESCALADE
- 2024 CADILLAC ESCALADE ESV
- 2024 CHEVROLET SUBURBAN
- 2024 CHEVROLET SUBURBAN 1500
- 2024 CHEVROLET TAHOE
- 2024 GMC YUKON
- 2024 GMC YUKON XL

JSON: [/v1/bulletins/11029900](/v1/bulletins/11029900)

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