Software Update 2023–2026 Yukon/Yukon XL/Canyon Software Update — Gateway 2026.3

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Over-the-air software update · Gateway 2026.3

This is an over-the-air software update notice. GMC filed it with NHTSA to describe a software release; it is not a recall unless it says so. Delivery depends on your vehicle's connectivity and settings.

Published: Oct 8, 2026
Applies to: Yukon: 2024–2026 · Yukon XL: 2024–2026 · Canyon: 2023

Also listed in the source (outside this forum's coverage): Sierra EV 2024–2026

Summary (official text)​

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. During the update process, your radio may stay on up to 5 minutes after you exit the vehicle. This is expected behavior.

Sources​

• Gateway 2026.3 (PDF, NHTSA document 11038821) — Oct 8, 2026

Details from NHTSA as of Oct 31, 2026. If NHTSA or GMC revises this notice, this post is updated and significant changes are noted in a reply. The linked documents are the authority, and a dealer can confirm whether it applies to your VIN.

Has this update reached your vehicle? Share your model year and anything that changed after it installed.

 

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