# Service bulletin N262559120

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: Service bulletin
- NHTSA id: 11035157
- Published by NHTSA: 2026\-07\-23
- Manufacturer's number: N262559120
- Manufacturer's date: 2026\-07\-23
- NHTSA component: UNKNOWN OR OTHER

## NHTSA's summary

Certain vehicles listed above may have a condition in which the Vehicle Leveling Module \(VLM\) may enter a faulted state during normal vehicle operation due to a software calibration issue. Dealers will reprogram the Vehicle Leveling Module \(VLM\). Owners who have accepted applicable terms and conditions will have the opportunity to accept these software changes using wireless over\-the\-air \(OTA\) technology without having to bring their vehicle to a dealership. Alternatively, owners may have their vehicle serviced at a GM dealer to receive these software updates.

## The document

- [NHTSA's copy of the document (PDF)](https://static.nhtsa.gov/odi/tsbs/2026/MC-11035157-0001.pdf)
- [If that address does not open, try this one](https://static.nhtsa.gov/odi/tsbs/2026/MC-11035157-9999.pdf)

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

## Vehicles listed

- 2026 GMC HUMMER EV PICKUP
- 2026 GMC HUMMER EV SUV

JSON: [/v1/bulletins/11035157](/v1/bulletins/11035157)

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