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Over-the-air update 654.10

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 id11030457
Published by NHTSA2026-04-01
Manufacturer's number654.10
Manufacturer's date2026-02-09
Campaign id or software version654.10
NHTSA componentUNKNOWN OR OTHER
Manufacturer's systemVICM (Vehicle Integration Control Module): VICM (Vehicle Integration Control Module)

NHTSA's summary

• Improvements to help protect battery health in low temperatures. • Improvements to diagnostics to reduce service messages. • Fixes to help protect battery health in high temperatures. • Fixes to improve responsiveness for vehicle diagnostics.

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 PICKUP2024, 2025
GMC HUMMER EV SUV2024, 2025

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