Converter lockup issue, need input on what it is...

[Carazy]

If you have a way to monitor data look at the TCC Slip RPM when the TCC Duty% climbs to 100. A good speed to monitor this at is above 50mph at a steady cruise. You should be around 0 slip when clutch is at almost full duty.

Locking the TCC at a stand still may not work like the old cars because it may need 3rd clutch feed oil to allow lockup. You get lockup in 3rd and 4th only.

[jmgak47]

If you have a way to monitor data look at the TCC Slip RPM when the TCC Duty% climbs to 100. A good speed to monitor this at is above 50mph at a steady cruise. You should be around 0 slip when clutch is at almost full duty.

Locking the TCC at a stand still may not work like the old cars because it may need 3rd clutch feed oil to allow lockup. You get lockup in 3rd and 4th only.

With HP Tuners you can lock it @ idle and it will die if its in gear or at least it did on mine. I was goofing around with it when I got it and thought... hmmm lock converter and tried it so I know it will kill the motor.

I am 100% sure its slipping, just not sure why.

Would do more testing but am afraid of circulating trash through the trans if there is any. Transmission is a fresh rebuild with around 300 miles on it.

[Carazy]

Its tough to diagnos without data now. Whaat year 60E?

[jmgak47]

Its tough to diagnos without data now. Whaat year 60E?

The truck is a 04 GMC VHO not sure the core used. Its a Jakes Level 3

[jmgak47]

Converter is here, kinda late in the day but debating on setting up some lights and attempting it tonight.

Fingers crossed this fixes it...