2003 Chevy Trailblazer multiple transmission codes

djthumper

Administrator
#5
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.
 
#6
@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.
 
#7
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.
 
#9
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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