P0757 code question
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I installed a Yank SS 4000 a few weeks ago and yesterday check engine light came on. The trans started to shift harder after that but had all gears. Then I shut the car off and started again and trans shifted fine. Checked and had a P0757 code, cleared the code and has been shifting fine and no light since then. Could it be small debris from the new converter that stuck the 2-3 shift solenoid or ????. I changed the fluid and filter when I changed converters. I had a Vig 2800 in this for over 2 years with no problems.