The click and pedal drop is the abs dumping pressure on the rear brakes. Need to find out WHY it wants to do that.

 

Have you taken off the rotors to see if the mechanics inside look ok.? Could something be making one grab when you start to apply the pedal ? Maybe even varnished up, dirty rotors. The drop in the brake pedal after your stopped sounds like an air in the line issue or a leak. I'm throwing darts at this. Don't completely understand how these systems work.

 

I think he has RWAL only.

 

opps, meant drums

 

A dragging rear brake makes sense. I just had a lot of restoration work done on the truck and it was sitting for about 3 months. Old(er) things don't like sitting for so long. Will get my guys to check the back brakes. (and yes, HER truck just has rear abs) Will let you know what I find. Thanks

 

So no issues with the back brakes. Glad I checked though, one of my side axle seals is starting to leak. Made sure there was no fluid on the shoes and checked the adjustment--all is good. Going to talk to the service manager at Dodge and see if he thinks they will be able to figure it out. I know on the older vehicles, getting drive data (input signals to pcm etc...) isn't always easy. General FYI, I see a lot of people with transmission issues--one thing that everyone should know, DON'T drive with the O/D on unless you are on the highway. Towing or heavy loaded--never have the O/D on. It is the weakest gear in the transmission and under conditions where it is shifting in and out of gear a lot--it will burn out. (used to re-build auto trans for 13 years)