1994 4L60e showing no signs of life.

[Supercharged111]

My trans did that when I swapped the 4L80E, repinned the trans connector, but hadn't swapped the trans segment yet. That PCM and harness are from a 4L60 truck I assume?

 

[usar17]

Harness is. I got the PCM and VSSB from online order specific for my tires and 4.10 ratio.

Just tested some wires using a dummy harness I had.

TCC Solenoid= Good 25 Ohms reading, no clicking sound when 12v+G applied
3-2 control Solenoid= Failed Ohms reading/infinite, no clicking sound when 12v+G applied
1-2 Shift Solenoid= Good 21 Ohms reading, can hear clicking sound when 12v+G applied
2-3 Shift Solenoid= Good 21 Ohms reading, can hear clicking sound when 12v+G applied
Pressure Control Solenoid= Good 4 Ohms reading
Trans Fluid Temp Sensor= Failed Ohms Reading/infinite

Thoughts? Should I replace some stuff?

 

[Supercharged111]

From where did you measure? A new trans internal harness is a popular thing to replace with a rebuild. I did on mine as I broke a tab on the plug when removing it.

 

[usar17]

I plugged into the transmission a short spare harness i had and tested there

-Shawn
1985 Chevy k10 w/ 92 TBI, 94 4l60e, 91 NP208

 

[Supercharged111]

Try testing the 3-2 and the temp sensor either at the trans, or maybe up at the PCM. You might have accidentally checked the wrong wires.

 

[usar17]

new vssb, ecm, and loaded a different set of files into TunerPro RT. I can see a lot more info now. Looks like Shift Solenoid A isnt responding. But since i know i can manually activate it from the transmission Ill have to look at the wiring. I must have a short somewhere. PCM is reading the gear selector based on the pressure sensor properly. Its shifting the B solenoid just right. Ill have to look at the wiring once she cools down.

 

[Supercharged111]

Could very well be the solenoid itself. Or perhaps you broke the clip on the plug?

 

[usar17]

The soleniod has a good ohms reading and i can hear it clicking when i apply 12v and ground thru it. Once this rain passes thru this weekend ill check the wiring

-Shawn
1985 Chevy k10 w/ 92 TBI, 94 4l60e, 91 NP208

 

[usar17]

Ok heres what ive discovered. Is the PCM not commanded 1st gear. Ive used 2 different pcms. I was able to get 1st for a little then hoped into 2nd at take off. What parameters would keep the pcm from going into 1st?

-Shawn
1985 Chevy k10 w/ 92 TBI, 94 4l60e, 91 NP208

 

[usar17]

Even with the transmission unpluged the pcm is sending ground to only solenoid B

-Shawn
1985 Chevy k10 w/ 92 TBI, 94 4l60e, 91 NP208