Malibu 98 power windows and A/C problem

I have Malibu 98, the problem start from 2 months after starting the car then trying to open the windows or turn on A/C non of them work and the ABS+Brakes lights or the check engin light ON for about 30sec or max 2 min. then all turned off at this time i can turn on A/C or open windows then the time become more than 2 min...till now nothing work (A/C and the power windows) and the engine light always ON. pls. need help.. thank you.

sounds like it might be the PCM, is this repeatable , does it happen everyday or say the third day. You may want to consult the dealer.

thank you..it happened almost every time i start the car; but now it is not working at all I mean the power windows and A/C and the check engine light is ON. is it could be PCM?...sorry what is the PCM?
thank you..

PCM = Powertrain Control Module or the computer. Everything in the car runs off of the either the PCM or BCM = body control module. Since you have multiple symptoms it might be that, could be a wiring harness , you need to go to autozone they will scan for free , to find fault code (s)