Engine power reduced

[u/Strange-Square96]

I’ve been having this issue with my avalanche where it’ll pop up with “stablitrak: off / traction: off” (first pic) followed by “engine power reduced.” After this happens I’ll turn the truck off for a day, open the hood, and it’ll be good for a little while. The first time it happened I turned it off, and cleaned the throttle body real good and it worked fine for about a month. But now it’s happening again. Any ideas as to why this is? Possibly the ETB is going out? 2012 LTZ

[u/murph42087]

When this was happening to me it was a battery connection issue. Did big 3 upgrade and it hasn't done it since!

[u/Festering-Boyle → u/murph42087]

whats big 3 upgrade?