Replace PCM? on 2002 Chrysler PT Cruiser

Diagnostic code is P0601. There is something about "check Sum".
Is this the main computer? will replacing it turn off the engine light?
I will have to accomplish this myself, so what is the most reputable brand of used/reconditioned units, and when the thing is swapped out, do I just stick in the key, crank it over and drive?

Get Your Car Fixed at a RepairPal Certified Shop.
We certify shops based on expertise, quality work, and verified customer reviews
1 answer 1 comment
Check Sum error is an internal defect and the PCM must be replaced. I would recommend only replacing it with a MOPAR (Chrysler) new or remanufactured component. After replacing, the module must be encoded with the vehicle VIN number by your local dealership with the proper scan tool.
Well............................
because of the ridiculousness you have just desccribed,
and because of other age & mileage related problems,
traded for less messed up car.
BRING BACK POINTS AND CONDENSERS!!!
DEATH TO ALL CAR COMPUTERS!!!!
Thanks anyway