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Over-the-air update 662.40

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.

The communication, as NHTSA indexes it (as of 2026-10-19)
TypeOver-the-air update
NHTSA id11036499
Published by NHTSA2026-08-31
Manufacturer's number662.40
Manufacturer's date2026-07-22
Campaign id or software version662.40
NHTSA componentUNKNOWN OR OTHER
Manufacturer's systemTCP: TCP (Telematics Connectivity Platform)

NHTSA's summary

• Improvements to OnStar through enhancements for charging, Super Cruise, remote start, and collision notification. • Fixes to address connectivity issue

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 PICKUP2025
GMC HUMMER EV SUV2025

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