I'm many, many, many hours into replacing the timing chain on my 2011 Enclave. I was starting to replace the timing components when I happened to notice that 3 of the rocker arms had come completely loose and were at the bottom of the head. This was on the same side of the engine that the looser of the two chains were.
I'm wondering how bad this might be, particularly if this means potential valve or piston damage. I've never done this type of engine work before and am not sure how loose those rocker arms should be, but they don't appear to be bolted on or anything. I took off the camshaft and noticed they all fit pretty loose.
My assumption is that those arms are supposed to be loose and as long as the car is in time, the cams are positioned in a way where there is enough force on them to prevent them from coming out. If that's they case, it ought to be good enough to just reposition the arms, get the camshaft back in place, do the timing chain work, and call it a day.
I don't know if this is wishful thinking though. Has anyone doing the dreaded timing chain replacement ran into these arms coming off? Is there any good way to know if there is valve damage without removing the whole head?