3 codes

[KiloCummins04]

little update to all of those following. we found a couple wires to the transmission that either don't have continuity or have extremely high resistance. we are fixing that by taking them out of the equation to see if it is those wires or if something else in the circuit is causing this, even though we have done our best to isolate it all. the scanner shows with the truck in park and idling, that the computer is commanding lockup. anyone else ever seen this before? or have any ideas? I was thinking transmission but now should I be preparing to buy a new ECM? my scanner allows me to reflash with updated stock file which I have here.

gov pressure solenoid is reading 0PSI across all ranges. We checked it yesterday and electrically it looks good, could there be another problem with it?

I have ave some serious electrical gremlins it looks like

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[KiloCummins04]

So fixed the bad circuits, went out today for a drive.

Analog gauge shows ~60-110 for the governor pressure solenoid.

That’s the passenger side rear port on the top.

Truck was driving fine actually went into lockup at 55 no issues. Did it 4 times. We didn’t change a thing. The truck almost died when starting off at a red-light but got up and shifted.

Got back and now there’s no power going to transmission but all fuses and relays check good.

WTF? What am I doing wrong here?

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