HI there
This code is for a problem with the 3-2 shift solenoid circuit. Many times this code or type of code is the result of dirty or low transmission fluid so I would start there. Here is some more info on the code for you.
P0785 CHEVROLET - 3-2 Shift Solenoid Circuit Electrical Read more: https://www.autocodes.com/p0785_chevrolet.html
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