# Over\-the\-air update 654.11

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: 11030518
- Published by NHTSA: 2026\-04\-02
- Manufacturer's number: 654.11
- Manufacturer's date: 2026\-03\-14
- Campaign id or software version: 654.11
- NHTSA component: UNKNOWN OR OTHER
- Manufacturer's system: BCM, PCM: BCM \(Body Control Module\), PO2/PCM \(Powertrain Control Module\)

## 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. • Fixes to help ensure proper functionality for shifting. • Fixes to help protect transmission health. • Improvements to diagnostics to prevent vehicle not starting. • Fixes to help reduce instances of check engine light activation in cold weather.

## The document

- [NHTSA's copy of the document (PDF)](https://static.nhtsa.gov/odi/tsbs/2026/MC-11030518-0001.pdf)
- [If that address does not open, try this one](https://static.nhtsa.gov/odi/tsbs/2026/MC-11030518-9999.pdf)

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

## Vehicles listed

- 2026 BUICK ENCLAVE
- 2026 CHEVROLET TRAVERSE
- 2026 GMC ACADIA

JSON: [/v1/bulletins/11030518](/v1/bulletins/11030518)

[Report an error on this page](https://github.com/wenmar-pro/wenmar-open/issues/new?template=data_correction.yml&title=Data%20correction%3A%20Over-the-air%20update%20654.11&page=https%3A%2F%2Fopen.wenmarpro.com%2Fbulletins%2F11030518&vehicle=Over-the-air%20update%20654.11)