2000 pontiac grand prix GTP Is ignition switch faulty DIC is not workingcuts out High beams go out otherlights work dash lights go out window locks etc dont work Alternatorbattery and wiring good?

It sounds like you may be dealing with a faulty ignition switch, as the symptoms you described—such as the dashboard lights going out, DIC issues, and intermittent operation of various electronic components—are often linked to ignition switch failure. Additionally, the fact that the high beams and other lights cut out suggests potential electrical issues related to power distribution. I recommend checking for loose connections or corroded contacts, and if those are fine, consider replacing the ignition switch to see if that resolves the problems.