Replaced my furnace motor today because of intermittent squealing. The furnace in our 97 270 is an Atwood 8900 iii and it uses a Dometic (Atwood) 37357 motor. I got this one off of Amazon but it's available elsewhere too. Price varies quite a bit. James (blinded04) posted a good youtube video link which I'll repeat here (replace motor) (https://www.youtube.com/watch?v=kz9JEn9y6ZY&t=303s)). There are several threads that describe the process. Here are a couple of photos for future reference.
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