# Over\-the\-air update N25\-249834

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: 11017181
- Published by NHTSA: 2025\-04\-24
- Manufacturer's number: N25\-249834
- Manufacturer's date: 2025\-04\-15
- Campaign id or software version: N25\-249834
- NHTSA component: UNKNOWN OR OTHER
- Manufacturer's system: VICM: Vehicle Integration Control Module

## NHTSA's summary

Great News\! Your vehicle keeps getting better. This software update includes the following, if your vehicle is equipped: • Improves accuracy of service messages for high voltage charging system. • Reduces drain on 12V battery. • Improves performance of charging. • Improves performance of wireless communication of the Lithium\-Ion battery status • Improves performance of cabin heating and windshield defrosting system 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-11017181-0001.pdf)
- [If that address does not open, try this one](https://static.nhtsa.gov/odi/tsbs/2025/MC-11017181-9999.pdf)

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

## Vehicles listed

- 2025 GMC HUMMER EV PICKUP

JSON: [/v1/bulletins/11017181](/v1/bulletins/11017181)

[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%20N25-249834&page=https%3A%2F%2Fopen.wenmarpro.com%2Fbulletins%2F11017181&vehicle=Over-the-air%20update%20N25-249834)