4l60e will not shift 3th at WOT
It will not shift third at WOT but when cruising everything is well and smooth.
Can it be some solenoid, force motor or something else issue?
I tried change shift point: 5000rpm and 4500rpm and 6000rpm with out result.
It is behind LSx 416 appr 500hp.
part throttle, 96% column and your WOT shift MPH are consistent
just for luck.
Scan trans current gear and the input, output shaft RPM. If current
gear doesn't change then it's a psychological problem in the PCM.
If current gear changes and input shaft RPM doesn't, then look to
the electrical / hydraulics in the trans.


