Reportedly, the one pictured above was temporarily removed in 2007 for restoration.
Over on the G503 forum, there are some pictures of a recently restored LVT-2: Normandy 2009 - look what I found. Most likely this is the one which was at Utah Beach previously. Seeing in what condition it was, and to get to this stage, >90% of the parts must have been replaced/remanufactured.