Product review (4 stars): One hour time to replace. Model LSC27910TT LG fridge
I took my time and went slow. A hour to replace and 30 minutes or so to clean freezer since it was now empty.  Installed in a side by side LG model LSC27910TT.  Fan was very noisy. When the last cover that housed the fan came off a large chunk of ice fell free. Where it actually was located is unknown. Time will tell if it was a bad motor or just Ice hitting the fan blade.  Pay close notice to wire routing on cover with light. It snaps into place and has one retaining screw. If the wire is not routed correctly the cover does not want to span back into place.
  Youtube has several videos on replacing this fan in similar fridges.