Multiple P and U codes

Question

Experiencing P0016 thru P0019, all inclusive; P0700, U0073 and U0100. Engine will run like crap, instrument panel quits working, A/C won't work, trans won't shift, check engine light on, some security symbol appears. It will clear up, sometimes quickly........sometimes not.
What is wrong with this car? Control module has been replaced and programmed by Chevy dealer 2 years ago after door locks went nuts, cruise quit, remote start quit and a multitude of other things went wrong. New control module did nothing to improve things. Lock issues continue as if controlled remotely - driving or ignition turned off.
Do I need to call an exorcist?