TRock

I recently swapped a 4L80 into my 2011 Camaro, I have everything working fine except for the 2-3 shift at WOT. It shifts 1-2 and 2-3 just fine at light or part throttle, and 1-2 shifts fine at WOT, but I have to let off throttle before it shifts to 3rd. it does this in auto or if I try to manually shift. I am running the PCS standalone controller, and not sure if this is a tuning issue or needs to be rebuilt.any suggestions?

Drj8787

Could be a fluid issue my 4l60e does same thing when in d at wot if its in od it makes the shift from2-3 fine but stays in 2nd if in d all I've came up with is low fluid dirty fillter or its on the down hill. I'm doing fluid in filter today so I'll lyk if its changes anything tomo

Troy5061

iTrader: (19)

3rd clutches burn out pretty easily on the 4L80 if its not dual fed. Do you have a Transgo HD2 installed?

Jake's Performance

iTrader: (2)

If it shifts fine at 70-80% throttle but not at WOT it's likely a tune issue.

TRock

Yes, I removed the pan and replaced the filter while it was out and noticed it had the kit already installed. One thing I did notice, the previous owner had the wrong fitting in the rear fitting (it did not have the long tube on it). I installed the correct fittings before install. Could that fitting be the root cause of this problem?

TRock

I just drove it again, it shifts fine at light throttle, it seems that more than 50% throttle it does not shift until I let off the pedal. I am going to lower the shift rpms and mph and see if that help.

Drj8787

How could u tell the hd2 kit was installed? I've been wondering if my 4l60e has one but don't know what to look for. I'm doing a verter swap so was trying to figure that out while I've got the pan off changing the fluid n filter.

TRock

When I had the pan off I saw the little plate with the transgo logo that's a part of the kit.

Drj8787

Thanks sry didn't mean to hijack

TRock

No problem,

TRock

Got it figured out, changed the line pressures and lowered the WOT shift RPM.