Product review (5 stars): Fan Motor Only
A really easy replacement, the tricky part is removing the fan blade from your old unit.

This worked with my Samsung fridge model #RS2530BSH

1. Remove back Panel (this is the only step that requires a screwdriver)
2. Unclip controller cable
2. Slide old unit towards you, carefully. Avoiding any wires and copper tubes
3. Very carefully remove fan from motor housing, do not pry off with a screwdriver as the plastic tabs can easily break.
4. Snap fan onto new motor unit and reinstall.

Consider purchasing a replacement fan blade to avoid the possibility of breaking the tabs on the old one.

http://www.amazon.com/Samsung-DA31-00010D-Fan-Blade/dp/B007QFQZZG/ref=pd_sbs_misc_1?ie=UTF8&refRID=07RCBKFCY0QZQZ9Y539W