Thanks for the pointers guys! Still getting used to driving a truck I have to tear apart. Last one was an RCLB with speakers rolling in the back and 1 screw holding each door panel on lol
I'm convinced I've got a connection shorting out on the RR speaker now. Drove the truck last night, faded everything forward and had great luck in it not cutting out. Drove it to work today, all was well. Went to leave work and the HU was back into protect. So I reached over and smacked the trim that hides the speaker (ECSB truck) and wah lah, suddenly it's working again.
Which then brings me to my other dilemma of upgrading speakers since I'll have the back half of the cab 75% off just to re-do this one connection