# Over\-the\-air update N25\-249834 \(652.40\)

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: 11019920
- Published by NHTSA: 2025\-07\-01
- Manufacturer's number: N25\-249834 \(652.40\)
- Manufacturer's date: 2025\-06\-23
- Campaign id or software version: N25\-249834 \(652.40\)
- NHTSA component: UNKNOWN OR OTHER
- Manufacturer's system: CGM, BCM, EBCM, ECP, HDLM, PTM, VLM, CSM: CGM, BCM, EBCM, ECP, HDLM, PTM, VLM, CSM

## NHTSA's summary

Software Update for your 25MY GMC Hummer EV •Fixes for audio system performance. •Improvements to connectivity for Bluetooth. •Fixes to help ensure successful software updates and notifications. •Fixes to address instances of inactive driver display. •Improvements to functionality for USB and steering wheel controls. •Improvements to leveling corrections. •Improvements to the performance of Super Cruise. •Improvements to the opening power of the rear power gate. •Fixes to address antilock braking system responsiveness. •Improvements to the performance of One\-Pedal Driving. During the update process, your radio may stay on up to 5 minutes after you exit the vehicle. This is expected behavior when an update package is onboard the vehicle. Do not service your vehicle during installation.

## The document

- [NHTSA's copy of the document (PDF)](https://static.nhtsa.gov/odi/tsbs/2025/MC-11019920-0001.pdf)
- [If that address does not open, try this one](https://static.nhtsa.gov/odi/tsbs/2025/MC-11019920-9999.pdf)

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

## Vehicles listed

- 2025 GMC HUMMER EV PICKUP

JSON: [/v1/bulletins/11019920](/v1/bulletins/11019920)

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