Mudshack

From my research it looks like the wire harness leading into the hatch is the problem.  The wires get pinched in there.   The dealership won't touch it without $$$.  And I am afraid to open that pandora's box.  Will probably end up splicing a whole bunch of things and then struggle to water proof it and fit it back in there.    I do a lot on my vehicles, but I don't like dealing with electrical.  Usually turns into me chasing things.

Yep.  I posted over there thinking it was this forum.  Now I am bouncing back and forth.  Sheesh.  LOL

Your "no comment" has been noted.  LOL

You have at least one bad ground - that's why the rear wiper only works when the backup lights are on.  And where here's one bad ground there are likely more.

Up where  live I rustproof our vehicles and as a result we don't get those types of problem.

When we replaced the filter housing assembly the new part came with a mopar filter.  And it came with new sensors.
 
Dropped it off at the dealership last night.  They called at 730am and told me they were done.  Replaced the oil pump.  Hope this is the end of this story.

When we replaced the filter housing assembly the new part came with a mopar filter.  And it came with new sensors.
 
Dropped it off at the dealership last night.  They called at 730am and told me they were done.  Replaced the oil pump.  Hope this is the end of this story.

When we replaced the filter housing assembly the new part came with a mopar filter.  And it came with new sensors.
 
Dropped it off at the dealership last night.  They called at 730am and told me they were done.  Replaced the oil pump.  Hope this is the end of this story.

Update.  I figured out how to remove the TIPM/Power Distribution Center from the vehicle.  When I did, I verified that the dealership was right.  The Powertrain Control Module was corroded.   Turns out it was a light corrosion on the copper pegs.  I used light vinegar and a toothbrush to get all the corrosion off.  I cleaned off the exterior of the TIPM/PDC and then on the underside where all the narrow pegs come out of the unit there was light corrosion as well.  I cleaned that up.  Unfortunately I couldn't get inside the TIPM/PDC to see if there was corrosion internally (which I am sure there is).   But all contacts are now cleaned.  If the shifting issue comes back I will clean again.  I will keep cleaning until I need to replace the TIPM/PDC.  It is a $400 part that litterally plugs in.  5min fix.  Enjoy the pics.
 
I just hope that if anyone has this issue that they can use this thread as a reference.  Shoot, I should probably make a Youtube video (my first) explaining it all.  I only say this because in nearly 24hrs of searching, I found not one reference to this issue nor how to fix it.

Update.  I figured out how to remove the TIPM/Power Distribution Center from the vehicle.  When I did, I verified that the dealership was right.  The Powertrain Control Module was corroded.   Turns out it was a light corrosion on the copper pegs.  I used light vinegar and a toothbrush to get all the corrosion off.  I cleaned off the exterior of the TIPM/PDC and then on the underside where all the narrow pegs come out of the unit there was light corrosion as well.  I cleaned that up.  Unfortunately I couldn't get inside the TIPM/PDC to see if there was corrosion internally (which I am sure there is).   But all contacts are now cleaned.  If the shifting issue comes back I will clean again.  I will keep cleaning until I need to replace the TIPM/PDC.  It is a $400 part that litterally plugs in.  5min fix.  Enjoy the pics.
 
I just hope that if anyone has this issue that they can use this thread as a reference.  Shoot, I should probably make a Youtube video (my first) explaining it all.  I only say this because in nearly 24hrs of searching, I found not one reference to this issue nor how to fix it.

Out of curiosity did you take a look at the PDC to see if you can simply clean/fix the corrosion? Maybe take a look at the Powertrain Control Modules fuse to see if you can replace it. If you can and it makes a difference then it would be a start. You will be looking for cavity F150 I believe. If you do see corrosion then maybe you will be able to clean it out. Transmissions have so many working parts that it is really hard to say why it could be doing that. There is an electronic factor in them and if the dealer gave you a starting point, then it could possibly be a DIY fix. I have not changed one on a DJ, but I did on a Ford vehicle. It was not because of a transmission issue, but because of an injector issue (if I remember correctly). My PDC was just ugly (corroded and musty). I started having numerous error codes and changed a few sensors with no success. Once I changed that unit, my issue was fixed (at least that one...that was my endless band-aid car). You may also want to take it to a reputable transmission shop to get diagnosed. I believe the powertrain is covered under warranty until 100K mile mark.
Good luck.