2013 dirty max dually transmission

[REED84]

Ok got a 2013 gmc dually. Can't get the truck into gear. Worked on motor and put it back into truck and I can't get it to move. Rev nothing d nothing put it into m and it's showing 6th gear already. Anyone have any ideas.

 

[2004LB7]

We're going to need more than that. Do you have any codes? Specifically transmission codes if you can get us those

 

[clrussell]

“Dirty max”

im Done here

 

[REED84]

These codes come up on the transfer case on the bosch old 1 and 2 scanner
C0379 front axle engagement system short to battery open
C0896 device voltage range performance voltage below threshold
U0100 lost com with ecm powertrain a
U0101 lost com with tcm
U0140 lost com with bcm
U0121 lost com with anti lock brake system control module

 

[REED84]

“Dirty max”

im Done here

Hmm hmm

 

[TheBac]

Considering your previous thread and now this, sounds like you've got another wiring issue, this time between the trans and the TCM/ECM.

 

[REED84]

Ok ill check into the wiring more. Is there a specific way the converter goes to the flywheel? I had it all connected can it be connected wrong or is there only one way for them to connect all the way?

 

[REED84]

Ok guys me again. I took the plug wire out behind the transmission and cleaned it up with electronic cleaner and put it back together. Now my trucks showing transmission hot idle engine and truck wont start wtf and ideas on that?

 

[2004LB7]

Bad wire or connection somewhere. High resistance on the transmission temperature sensor wire(s) will give a false high temperature reading. Bad connection on the park/neutral circuit will cause a no crank condition. As Tom said, you likely have some wiring issues

Is it not cranking or will it crank but not fire?

 

[REED84]

Not cranking up. Has shift solenoids codes now and the line under the PRNDM is not there. All after I cleaned the wire behind the transmission. I had it running again before I did that

 

[2004LB7]

Time to get back under there and see if you messed something up, left a connection loose or bent a pin, etc

 

[Mike L.]

Clear codes first and see what comes back.

 

[REED84]

I cleared them and they keep coming back and the transmission hot idle engine stays on the dash

 

[zakkb787]

With all the issues you’re having, you’ve either got some things plugged in wrong, or maybe you grounded something out or somehow fried some modules.

 

[REED84]

What would I fry on cleaning the plug on the back of the transmission? It started and ran before I did that. Still says transmission hot idle engine and no line under prndm.

 

[Mikey52]

Well if the module was fried before you cleaned the connector, my bet is it's still fried. The u codes are communication codes. Those have to get fixed first. The ecm is looking to see certain parameters from all the other modules before it will proceed with a start. U codes means means that the parameters for a start are out of tolerance because the ecm can't see them. Either fried modules or bad wiring. And when I say wiring, it could be as simple as a bad pin in a plug.

 

[Mike L.]

I would start with a new PSM and internal harness. If no change, work back to the TCM.

 

[REED84]

Does anyone know what ohms should be coming out on pin 47 and 66 on the tcm? I'm getting 127

 

[REED84]

Does anyone know what ohms should be coming out on pin 47 and 66 on the tcm? I'm getting 127

Still haven't got the truck goinh