Hey guys, first post here.

I have a 2011 Ram 1500 Laramie with just over 100,000 miles the 5.7 Hemi. I've had it for a few months and love it but have been plagued with issues so far. First issue was the fuel pump relay which i fixed with the bypass from vertical visions. Fixed that problem but now I am having issues with the transmission pressure switch I think. I have had the following codes:
P0869 P0934 P0936 P0933 P0935
I replaced the pressure switched and noticed the wires had been previously spliced. I looked up the trucks Carfax and it told me the transmission had been serviced and told me what shop did the work. I called them and they told me they did the wire splice and it was fine after that. That was back in 2019. Keep in mind I didn't have any problems until like 2 weeks ago. I replaced some wiring connections that looked questionable with some water tight connections and heat shrink but am still getting a code. Also it likes to stall at a stop sign and the remote start is disabled. I don't know what to do at this point besides taking it to the dealership. I did contact a transmission shop and they suggested a new wiring harness but I guess those aren’t available anymore. Any suggestions?

 

Update:
I ended up taking it to a transmission shop to properly diagnose the problem. They ended up fixing my fix of the broken wires and doing an inspection of the wiring harness, external and internal. Everything checked out ok. Because they had to open up the transmission to inspect the internal harness, I had them do a complete service and one of the two filers was barely on meaning it was held on by 2 threads instead of 12. They said that was probably the problem. It wasn't...still getting codes P0933 and P0935. They said they pulled a code of P0740 which I never got. They also told me it was a stored and active code. I'm not sure if I really trust them or not. because now they're saying I might need to buy a new transmission...even though it is shifting fine. Any input would be very helpful here. Thanks