Dead pedal when in gear

[TexasGMC08]

Did a LT swap in a 92. Ever since swap we have a dead pedal only in gear in ramp in WOT. You can pop the throttle in park and it responds. But in gear there is a dead pedal like when you Zero out TM in the 07+ Trucks. Thanks!

[Higgs Boson]

post tune

[TexasGMC08]

It's the stock 2014 pcm. No codes.
If driven calmly the pedal response is good and works flawless. When tires break loose like in a power brake pedal goes dead until you key off for a couple of minutes. Then key on and it's back to normal.

[Higgs Boson]

brake torque management needs to be disabled it sounds like....probably a bunch of stuff if it is stock cal.

[TexasGMC08]

Well pre GM It's a ebcm communication issues. Might need to disable all TC functions or need a DBC TB . Brake TQ in TM is disabled.

[veee8]

Are you feeding the ECM a VSS signal? I've seen that cause this issue before.

[TexasGMC08]

Yes we are.. We can break torque it and once we do that the pedal goes dead and takes a couple cycles for the pedal to relearn its self.

[Higgs Boson]

some kind of limp mode? what have you done with the Diag tables?

[TexasGMC08]

What ever is not used its Disabled.

[TexasGMC08]

Update on issue... Had a faulty pedal sensor.. Truck is fine and with a happy customer!