Several codes, I am wondering if PCM is bad?

I need some ProTech help determining the cause for all these codes. I checked the grounds, and they all seem to be okay. I have no idea where to start with all of these and I think the PCM is going maybe?

OBD code 32
-EGR valve diagnostic switch, closed during engine start up or open when EGR flow requested by ECM
-Sensor signal voltage is low
-Electronic vacuum regulator valve (EVRV) error (EVRV controls EGR vacuum)

OBD code 42
-Electronic spark timing circuit open or shorted

OBD code 43
-electronic spark timing (EST) circuit low voltage detected
-Electronic spark control (ESC) circuit problems

OBD code 44
-lean exhaust indicated (left side on dual oxygen models)

OBD code 45
- Rich exhaust indicated (left side on dual oxygen models)

OBD code 46
- vehicle any death system (VATS) failure
- Power steering pressure switch failure

OBD code 51
- Computer problem, faulty, wrong or incorrectly installed PROM circuit; or ECM/PCM failure

OBD code 53
- System voltage too high (over 17.7 V to ECM) or EGR system fault or alternator voltage not normal or vehicle any theft system fault.

OBD code 54
- Fuel pump circuit fault or mixture control (M/C) solenoid fault or electronic control module (ECM) fault/EGR solenoid number to failure (3.8 L VIN1) —- I have an lT1...
- fuel pump relay

OBD code 55

- Electronic control module (ECM) fault or oxygen sensor circuit fault or EGR solenoid number three failure (3.8L VIN1)


Is my PCM bad? What the hell could cause all of these?

Thanks in advance!