# Over\-the\-air update 661.22

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: 11034931
- Published by NHTSA: 2026\-07\-08
- Manufacturer's number: 661.22
- Manufacturer's date: 2026\-06\-15
- Campaign id or software version: 661.22
- NHTSA component: UNKNOWN OR OTHER
- Manufacturer's system: BCM, EBCM, ICCM, TPIM, APA, ELM, EOCM, FCM, PFCM, PTM, VLM, WCM: BCM, EBCM, ICCM, TPIM, APA, ELM, EOCM, FCM, PFCM, PTM, VLM, WCM

## NHTSA's summary

• The active cabin ventilation feature will operate more reliably • Additional protection for the health of your battery and updates to help prevent excessive battery drain and overheating • Improvements will support successful software updates for your vehicle and allow you to access new features and fixes • Improvements to leveling corrections • Improvements to the performance of One\-Pedal Driving • Fixes to help maintain Electronic Stability Control and One\-Pedal Driving availability after a vehicle software update • Improvements to the power swing gate. • iPhone charging

## The document

- [NHTSA's copy of the document (PDF)](https://static.nhtsa.gov/odi/tsbs/2026/MC-11034931-0001.pdf)
- [If that address does not open, try this one](https://static.nhtsa.gov/odi/tsbs/2026/MC-11034931-9999.pdf)

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

## Vehicles listed

- 2024 GMC HUMMER EV PICKUP
- 2024 GMC HUMMER EV SUV

JSON: [/v1/bulletins/11034931](/v1/bulletins/11034931)

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