Batass

Car has been going into reduced engine power and sometimes just shuts off going down the road. Have replaced TB with two others, also replaced pedal. I do not have a tac module.

While monitoring with efi live-
At cold startup all readings stabilize. With a little throttle and back to idle the readings begin to fluctuate rapidly and the code is set.

So far I have not found any wiring problems visually at the pigtail. I also wiggled the harness while monitoring voltages and they were stable.

I've cleaned the grounds at the back of the heads.

2006 cts-v with e67 pcm.

I'm pulling my hair out. Any suggestions?