My clutch slips when locked, when I accelerate hard at highway speeds. The truck jerks like it would if the ignition was being turned off and on twice per second or so. I at first thought it was a lean surge, but after thinking about it I decided to try unlocking the converter and accelerating. That made the jerking go away.
Two questions.
1. In VCM controls, TCC solenoid on/off did nothing, TCC PWM on/off locked/unlocked the converter. Is that an OS thing, or is there something wrong?

Even though I am pretty sure this slipping started when I was pulling a car on a trailer and accelerating hard at highway speed with the converter locked, I still want to know:
2. What else can I test before ordering a new converter?

 

Scan TCC slip and you will be able to see it happen. For it to work I believe you need to scan.

TCC slip
Engine RPM
Trans input speed

 

60e or 80e?

I don't think you'll be able to tell the difference between a slipping converter clutch, or a slipping 3-4 clutch pack. That's how it was with my 60e when the 3-4 clutch pack gave out. Held fine in 3rd, slipped in 4th.

 

In a 80e you can, in a 60e you cannot. 60e doesn't have a input speed sensor.

 

My 80e only does it when the converter is locked.
I don't understand the log I took. It always says 80%-78% slip. The slip rpm goes from -9 to 8. The input rpm will read 2300-2400, engine rpm is 1700-1800. I must have set the scanner up wrong.(?)

 

I hate windows 8.1. I can't find my config or scan.

 

Mike, send me your logs and such to the email attached to my profile and I'll look over them this eve. Please attach the config you are using.

 

Thanks. If I can find it on my computer!

 

Config. How do I upload the scan?

 

Is this it?