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Over-the-air update 662.10

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.

The communication, as NHTSA indexes it (as of 2026-10-19)
TypeOver-the-air update
NHTSA id11036498
Published by NHTSA2026-08-31
Manufacturer's number662.10
Manufacturer's date2026-08-10
Campaign id or software version662.10
NHTSA componentUNKNOWN OR OTHER
Manufacturer's systemCGM: CGM-OTA (Communication Gateway Module - OTA Micro)

NHTSA's summary

This update contains a required software change to help improve the overall software update and diagnostics process. Be sure to install this update to be able to receive future software updates.

The document

The document is the manufacturer's. This site does not hold it. NHTSA files a document at one of these two addresses; we have not asked NHTSA which.

Vehicles listed
GMC HUMMER EV PICKUP2022, 2023

Listing a model year does not mean every vehicle of it is concerned: the document says which.