Gman

My dishwasher heat coil has broken ( part AP4325066) is this part hard to change?

Here are your parts
http://www.appliancepartspros.com/partsearch/modelsearch.aspx?model=GU1200XTLTO

AP4325066

It is fairly easy to replace though unless you have long arms, you will have to pull the dishwasher or at least move it forward some.