Unscrewed the cover (just one screw using socket wrench), disconnected 4 cables, reconnected replacement part, re-covered unit. Done in < 5 minutes!
Only 2 hurdles I had were:
- green ground wire was difficult to pull off of old part. Had to use a small screwdriver to help pry it loose from connector.
- while attaching one of the wires to the new part, I accidently pushed against the connector when it wasn't perfectly aligned, resulting in a bent connector pin ... with the result being the damper didn't appear to work. When I discovered the connector wasn't fully engage, I simply re-aligned the connecting pin which I had bent slightly, and everything worked as planned.
Getting the part from Appliancepartspros.com saved me a bundle! (repairman estimated $250 for him to come out and swap it out).