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Over-the-air software update · N26-254904
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 truck's connectivity and settings.
Published: Aug 18, 2026
Applies to: Sierra 1500 (2026 model year)
Details from NHTSA as of Oct 22, 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 truck? Share your model year and anything that changed after it installed.
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 truck's connectivity and settings.
Published: Aug 18, 2026
Applies to: Sierra 1500 (2026 model year)
Summary (official text)
Sources
- N26-254904 (PDF, NHTSA document 11036479) — Aug 18, 2026
Details from NHTSA as of Oct 22, 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 truck? Share your model year and anything that changed after it installed.
