OTA Update causing performance issues?

[Dat Dude Trav]

I have a 25BW A10 with Corsa Extreme. I've had the exhaust on since 1/1/26 with ZERO issues but on 3/29/26 I noticed the valves started opening and closing every few seconds, on their own, regardless of drive mode, rpm, speed, etc. I've also noticed that my Vmode isn't as "crisp" or "peppi"...seems to bog down more often now. The only thing that has changed was I completed an OTA update a few days prior but can't find any info/release notes for it and what it addressed. Anyone else notice any similar issues after this most recent update or any update in general? Car is scheduled to go to the Dealership on 4/13 but wondering if there's a easier solution, like reverting back to a previous file?

 

[Dat Dude Trav]

Just looked at the Update history, inside the settings, and here’s the screenshots. On my way to work the car seems like the drive modes are mixed up. Vmode doesn’t perform like it used to and I don’t have much experience in the other modes because I drive almost exclusively in Vmode. Touring would be the next most-used and it feels decent but…

In my search of the update it appears that this was pushed to "GM EVs including Equinox EV, Blazer EV" with "no evidence linking it to Cadillac"