Is it’s a different tcm yes

John citizen Your running at full line pressure be cause the PWM isn't working. always makes a harsh 1-2 shift.

Sonnax has an article about 2-3 flare and checking current draw by the shift solenoids.

@@combatjm89 Thanks, il try and find that article

Not really. It's the only way to fix the input drum if it's leaking between the drum case and the shaft. They pretty much always leak there and you can't buy them new anymore so the threadlock method is about the only option.

That's the only way to fix that issue

Sounds like a bad throttle position sensor, or a failing shift solenoid, or dirty fluid or sticking piston.

@@rickhoward1516 How do i find or where on a 2005 Chevy Silverado 4.3 engine, 2wheel drive find the type ( NUMBER ) of my transmission.?

@@davidvarney9254 look it up online. Probable a 4L60E

@@davidvarney9254 You can use the RPO codes in the glove box, or the actual serial number of the trans on the tag on top of the unit. If you can't see it, the SN is engraved on the trans where it meets the pan (passenger side if I remember correctly).

@@davidvarney9254 it's a 4L60E

I would swap all while you are in for 20 bucks

Ya thats a good point it wasnt the solenoid .I fixed it the middle solenoid has a metal conductor that breaks easily they seem to be aware of the problem as they put an extra little rubber padding on it . I just put a few strands of wire over the break and dripped solder on either end of the wire strands to complete the circuit. I was driving it on roads that had huge snow ruts on the and was banging really hard on the undercarriage is what caused it im sure. That metal conductor is the first thing on the other side of the pan.