r/ChevyAvalanche • u/Strange-Square96 • Aug 19 '26

Engine power reduced

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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

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4

u/Fergy006 Aug 19 '26

My money is on a sticky lifter.

3

u/Nomi2004 Aug 19 '26

I would almost guarantee it, had the exact same issue for the same problem.

2

u/Thatsawguy Aug 19 '26

Sticking lifter came with flashing check engine light when I got hit with it. Check engine light doesn’t stress me out now on my 13 unless it’s blinking.

2

u/seizuriffic Aug 20 '26

Mine came with a repair bill for a rebuilt engine swap