1999 Dodge Durango brake issues

This is commonly caused by a sticking parking brake cable that is partially-applied. Check that both shoe frames are resting against the large anchor pin on top. Next, you should be able to push the parking brake strut bar forward against the pressure of the anti-rattle spring about 1/8". If either of those are not the case, look at the parking brake lever attached to the rear shoe and you'll see it's pulled forward a little.

"I bought this vehicle and the rear pass brake shoes were down to metal."

So YOU don't know the history of the vehicle, but you expect me to.

"I replaced the shoes, springs, wheel cylinders L and R and bled".

Very few people know about the constricted rubber hoses ON THE FRONT where rust builds up inside the crimped-on bracket. You don't have that on the rear. Now please explain to me, in your infinite wisdom, if the rubber hose was blocked, how did you bleed any brake fluid through it? THAT'S the "issue" you gave me.

"I replace the hydraulic module and ecm from a junk yard with the same numbers".

Who's the fool now? You couldn't properly diagnose the cause of the problem, but you expect someone else to do your work over a computer.

I don't know how long you've been a brake system specialist, but I've been doing this since the late '70s, and I've never run into a constricted flex hose on the rear of a single hydraulic system. After rereading all the details and observations you posted, and for the benefit of anyone else researching this problem, the sticking parking brake cable will be found to be the cause over 99 percent of the time. It's YOU who needs to learn some manners. Anyone with the slightest courtesy would post what they found and thank the person who drove 20 miles round-trip to sit in a library parking lot to answer car questions for the benefit of disrespectful people like you, ... For free! Now grow up and act like an adult. You should be ashamed of your reply.