For over a year or so the when I turn either AC or Heat on the fan doesn't kick in at full speed whether the climate control is set to Auto or HI. It takes a good 15-20 minutes into a drive before the fan kicks in. It doesn't take any shorter a time to come on even when the outside temperature is very cold or very hot. When the fan does come on I hear a very distinctive click which sounds like its right behind the dash. So I’m thinking maybe it’s the Transducer. Any ideas before I go ripping the dash apart?