Leak or malfunction exhaust brake?

[12RKNinja]

I asked also, best he could tell was they may have come loose when it was bucking,(trans fluid low) when he scanned they wasn't on which I had already checked the connections the day before. Idk dirt in connection maybe or vibrated loose, it was a wild ride coming up the road at 25mph with gas, brake steering and dash vibrating. Can only imagine how much everything in the engine bay was shaking around. Just glad its a usable vehicle now.