71 c10 with ls3 psi wiring harness ecu38 and tcm42. 4l60 went out did swap to 4l80 used psi plug n play adapter. Installed 2 different 4l80 and get below codes on both transmission. Goes into overdrive the first time then code come back after clearing. What am I missing? Everything else works great all gears and tc stall all fine. 315/35 tire size with 373 pos. Did segment swap with tuner. Help. 337-532-8653 thanks