Not much else I can do. It's a parking gear and pawl on the C6. The dash cam captured it happening. It began clunking and shaking as it was slowly letting go of the gear, before it totally let go.
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The gear and pawl are still working, I can tell on hills when I make sure it's in park, but it could have shaved off a bit of metal. The pan will be dropped soon so that can be checked for metal.
It looks like a case of it just not quite engaging fully in park and taking about 5 seconds before it began letting go, after I was already outside.
The worst thing, from a daily life standpoint, is the grey tank (can't shower). I need to double check the measurements, but I think a new $100 shipped tank will fit the hangers and space. It's the same exact one I got for the black tank that was missing.
Worst part for doing the other repairs is the bumper, since I can't pull out the fiberglass to line it back up with the bumper shoved in like it is.
The trailer? Well I'm going to have to do a lot of fiberglass work on that. I think I'm going to use some wood bracing inside for the short term between the walls and floor. 1x2 is all it needs, nothing expensive. The frame isn't damaged, just the box, so i just have to keep the box from coming anymore loose. It's all cocked to the side still and has been letting rain in, so i might have to replace the plywood floor again this winter if it decides to decay quickly.