To Keep C8 Warranty You Must do OTAs

[teamzr1]

In GM’s official Limited Warranty and Owner Assistance Information booklets for 2025 and newer model-year vehicles, the automaker explicitly states that owners are responsible for installing OTA updates within 45 days of their availability.

The policy reads:

“Damage resulting from failure to install Over-the-Air software updates is not covered.”
In short, neglecting updates could leave owners without warranty protection if a related issue arises.

This stipulation applies across all four of GM’s U.S. brands (Chevrolet, Buick, GMC, and Cadillac).
If an OTA update is missed and a component fails due to outdated software, the resulting repair costs could fall entirely on the owner.

However,

GM also clarifies that “if an Over-the-Air software update causes damage to the vehicle, that damage will be covered for the applicable warranty coverage period,” which should provide at least some peace of mind for those owners who would otherwise prefer the “wait and see” approach.

 

[Chevrolet]

I'm guessing that OTA software updates (via Onstar?) don't apply/aren't available in the UK (or mainland Europe?) as GM withdrew/"canned" Onstar in Europe/UK a few years back?

 

[teamzr1]

Two other OTA paths

1. Via going to a dealer
2. Having a wireless network at home that connects to the internet

I would think, a dealer in the UK would be required to have both of the paths for themselves and their customers ?
Clearly to support GM warranty they would have those functions or at the least GM diagnostics tools they could load
the updates and then flash those into the vehicles controllers as needed