So as an update, i got the remanufactured head unit and amplifier. I installed both and still no workie. So then i bit the bullet and took the truck to a very reputable shop that does all our audio work. He worked on it for a few hours today and tested all the speakers and said they all are fine but still no sound out of the speakers. He gave me the truck back and said i should send the head unit and amp back as maybe they both are bad??

BTW, I have the seven speaker Infinity system and they are all working fine.

I'm ready to bang me head on the wall.