Hi guys I put a 2004 5.3 motor in a 97 S10, I also put a 4L60 from a 2002 Sierra in behind. I used a harness and ecu from a 2002 Sierra as well. I have speed reading, performed a tcc lock up in gear, that worked but under load 80-90 throttle I am getting slippage. What should I log? Where should I look, servo upgrade? It slips in all gears.
Anyone?