My 01 was doin the same thing got a noise filter from a local tranny shop and problem solved I would consider buying one and nipping it in the bud early cause the problem will more than likely come back did with ne. Good luck

 

PROBLEM: Dodge installed an unshielded wire from the alternator to the negative wire of the passengers battery to the ground wire of the trans PCM. The solution, shield this top alternator wire and the RF interference issue is solved.

I tried all the ground wires, PCM, APPS,connections etc, and all the other ideas you all stated above with no luck. Even tried Goerings PCM/Alternator ground wire fix and it did not work either.
Found this fix several months ago on a website. Fixed the problem for $2.55!!!!!
Went to wal mart and bought some heavy duty ALUMINUM FOIL. STOP LAUGHING. I wrapped the top wire (ground wire) from the alternator that goes to the negative side of the passengers battery to the ground wire of the PCM, black wire with white stripe, with 3" strips of ALUMINUM FOIL, wrapped it with several layers of foil, and then wrapped it with electrical tape. NO JOKE IT WORKED. In fact after doing this repair a few hours later, I pulled my 5th wheel from the GA mountains to AL and back with no issues!!!

Also, Garmon, has a new alternator with an external voltage regulator for $305. It is supposed to solve this in/out issue. I would have bought one, but this happened on a weekend. Turns out I did not need it.

 

Thank you for all the good advice I did reroute the ground up and over the radiator, reset the APPS sensor and installed a BD noise filter and so far no problems.

I went to Reno a couple of weekends ago and went through the hills with no T.C issues.

I will update if anything changes.

Once agin thank you for all the good advice and please keep posting on this cause everyone has a different methoed that fixed the problem. It's nice to try them through trial and error.

 

I did that to mine about 4 years ago but it eventually came back. Maybe yours won't but I know now my issue is an alternator that tests bad and still needs to get replaced.