I had that loud noise during the wash cycle! I corrected the problem! Icleaned the spray arms to make sure there was no food residue. Then I realized that on the back of the top drawer there was a tight water connection that snapped together on the water pipe on the inside back wall. Evidently we weren't pushing the top drawer enough to tighten this connection and the water wasn't flowing properly. The loud noise dissappeared
Al Huther