2003 Chevy Trailblazer multiple transmission codes


It's got to be the PCM giving all of the issues. Giving us codes help, or take some sleeping pills and hope the nightmares go away.
@Steven parkinson , please post some details about your issue. Symptoms, codes, previous maintenance and/or other related repairs or issues. If no further details are added, this thread will be deleted.
First off, just as reference, codes are P with 4 digits. The second character is not an O, it is a zero. That will likely help you with when you're looking for info on error codes.

All of those are electrical error codes. Google says:

P0753 Shift Solenoid A Electrical
P0758 Shift Solenoid B Electrical
P0780 Shift Malfunction
P1860 TCC PWM Solenoid Circuit Electrical

I do not know what your first one was as it is missing a digit.

All being electrical in nature I suspect you have a blown fuse or a bad ground. Maybe damaged harness where it plugs into the transmission.
I doubt that is going to do you much good. I could be wrong, but given your codes are complaining about all the solenoids, it sounds like a much larger electrical issue not just a single solenoid problem.

CHECK all the wiring first. Then start replacing parts after that.

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