I recently tuned my 2000 malibu with a 3.1 motor. After disabling some torque management. I went out and drove it. When it shifted, it felt like it was slipping, not wanting to hurt anything, I put it back to stock tune. Now when I am driving, while in 2nd and 3rd gears, at part throttle I get some slipping. Using the scanner, I can see my line pressure dropping and my rpm's spiking. While my sensors are all reading good. I took it in to a tranny place and they could not give me a definate answer but there guess was a ecw solinoid or something like that. It would cost 700.00 to fix. I am pretty sure that it is not my transmission because when I change my force motor current to add more pressure the problem goes away. Is it possible that my pcm could be messed up. Or am I missing something? Help, this is my everyday driver!
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