HELP i just installed a 06 gto LS2 and 4l60 trans in my 55 using gto harness car runs but check eng lite on code co101 [transmission not communicating] drove donor car before removal ran fine had pcm and tcm flashed. car runs but has zero power and is in 2 nd gear through which wire or wires does the tcm talk to pcm what may i have messed up in wiring in gto harness and leads for help appreciated im in ca la area