# Over\-the\-air update 661.10

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: 11032969
- Published by NHTSA: 2026\-05\-28
- Manufacturer's number: 661.10
- Manufacturer's date: 2026\-05\-27
- Campaign id or software version: 661.10
- NHTSA component: UNKNOWN OR OTHER
- Manufacturer's system: BCM, EBCM: BCM \(Body Control Module\), EBCM \(Electronic Brake Control Module\)

## NHTSA's summary

• Improvements to traction and stability control on uneven terrain • Improvements to braking performance on low\-traction surfaces • Improvements to assisted braking • Improvements to active cabin ventilation • Additional protection for the health of your battery • Updates to help prevent excessive battery drain and overheating • Improvements to the software update system

## The document

- [NHTSA's copy of the document (PDF)](https://static.nhtsa.gov/odi/tsbs/2026/MC-11032969-0001.pdf)
- [If that address does not open, try this one](https://static.nhtsa.gov/odi/tsbs/2026/MC-11032969-9999.pdf)

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

## Vehicles listed

- 2026 CADILLAC CT4
- 2026 CADILLAC CT5

JSON: [/v1/bulletins/11032969](/v1/bulletins/11032969)

[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%20661.10&page=https%3A%2F%2Fopen.wenmarpro.com%2Fbulletins%2F11032969&vehicle=Over-the-air%20update%20661.10)