Product review (5 stars): I couldn't believe how easy it was
I bought this and went to the direct website appliancepartspros.com and they have step by step videos on how to change this.  I couldn't believe how easy it was.  It took me maybe 20 minutes total.  The LG repair guy wanted to charge me $400 to do the same thing that cost me $20 and 20 minutes of my time.  Do yourself a favor and research your error code on that website, it will tell you the part you need and how to repair yourself.  I am by no means mechanically inclined either...