I hope someone can help me. no idea what i am doing wrong.
Have a 12205612 operating system.
The computer did not belong to this engine. Have an LS1 5.7
And 4L80e gearbox in a 1939 GMC truck
Engine works fine. I only have 1 and 2 gear and nothing else.
When I switch on the solenoid 1-2 with vcm scanner I hear it click.
When I turn the 2-3 on I don't hear anything.
I measure the yellow / black wire at point 47 (red) 12v.
When I connect it to ground I hear a click in the gearbox
So solenoid works.
I look in vcm scanner at the channels:
Shift solenoid 1-2. i can switch it on / off with vcm scanner
Shift solenoid 2-3. remains off whatever I do.
If I turn on 1-2 solenoid and then turn on 2-3. Then 1-2 off. Then 1-2 solenoid remains on until I turn 2-3 off
Have used the transswap file 2000 silverado 6.0 4L80E 612 OS.hpt.
hope someone can help me
Last edited by mts-rides; 05-11-2020 at 06:02 AM.
Reason: more info