'09 1500, Dual ACC, with center consol. When the key is turned on I get a series of click,click click clunk..sounds like it's behind and below the radio haven't really tried to narrow it down yet. It sounds like it's running through a test. when I turn the dials to front panel I get nothing, but I do get Def on dash. A few times turning to manual fan it does nothing but run on low like it's stuck in auto mode...then after a minute or two the fan works fine..I assume it detects an error somewhere. thoughts?

 

Found it. Was the top one..all fixed. Now a camera issue...