I found a youtube showing a model similar to mine and was able to see the potential parts involved. I ordered the parts. I didn't take dishwasher from under counter until the parts arrived. Only 2 possible problems; no need to confirm, parts are cheap enough to replace both. I installed the dishwasher when the kitchen was new, so pulling it out wasn't a new experience. Took longer to get tools together, slide unit out and slide it back in than it took to replace the parts.