Product review (5 stars): Did It Myself
Our KitchenAid 'fridge/freezer was making a REALLY loud and obnoxious noise, so I pulled off the grill and looked to see if I could figure out what was wrong.  By turning on and off the power, I could see and hear that a fan was making the noise.  I Googled the manual (no longer had it) and looked up the part needed.  Arrived in 2 days and took about 5 minutes to replace; I figure I saved about $200 for a service call.  Awesome!