problem with radio shutting off after 20 minutes then cools down and works again, the amp seems warm, has anyone been thru this, it is all factory parts.

 

I've seen that happen on other cars... with an 07 if you are still under warranty I would take it in to the dealer to have a new radio installed. Those are "non serviceable" parts so they won't even attempt to repair it.

If you are OUT of warranty, don't even think about a factory replacement radio from a dealer. It'll probably cost something outrageous like $400. Either shop around scrap yards or eBay to find a factory replacement, or look into an aftermarket option.