Interesting, seems like it might be an actual thing on the earlier Blazer setup. There’s a lot of chatter on the Silverado forums as well as anything else that’s used AFM about how it causes all sorts of running issues, maintenance problems, kills puppies, etc. but no actual issues the latest iterations actually do anything bad. But if anyone says they have ANY issues with their vehicle, like a door not closing right, everyone screams AFM!!!! That’s one reason I barely look at those forums anymore.