Hello, and thanks for reading.

2000 Durnago 5.7 R/T 4x4 185K miles, 10.5MPG 2nd transmission (rebuild), 2nd front diff. (from a dismantler) I believe it is a CA emission vehicle since it was sold here first.

Ill start with some possibly related symptoms:
- Wipers in the back come on when the front wiper are turned on
- the radio all of a sudden has a ground issue? with engine noise in the speakers
- these started a few months back.

about 1 month ago the trunk went limp mode.
Then I got the codes:
- P0753 for shift solenoid A
- P1740 for the TCC / OD solenoid
- and an evap code (gas cap needed to be replaced)

I swapped a known good relay (fog) with the transmission relay and checked the transmission fuse.
I replaced the shift solenoid A and the TCC solenoid. I did not replace the wiring harness that came with the new part. The filter was also replaced.
I used ATF +4 to fill it. 8 Qts.

Still in limp mode.

Codes were cleared and they both came back.

Took it to a transmission shop and they said they think its the PCM, but their computer cannot communicate with the ECM to troubleshoot it.

my PCM has the model P56028470AB on it.

1. I'd like your opinion on what you thin the issue is. Sound like PCM is my nest, next step?
2. I can't find that specific part online anywhere. I have found p56028 468ab...I am wonder how different they are?
3. anyone know where I can find one?
4. The Truck BlueBooks for about 2700 private party in fair condition. I think I might be better off selling this thing for $2000-ish than dropping another 200-500-??? into it to then sell it for $2500 after I "possibly" fix it with the PCM.
What would you do? I definitely want to get rid of this gas wh0re anyway.

SEMPER FI