On my grand prix gtp the instrument panel lights blink on and off, when it does that my windows will not work and the car will lose power and will barely go, my trunk lid will not open with the button and the locks lock on and off. This all started when the panel lights started to act up. Can you please HELP!!

Sounds like a ground problem . Do you know anything about automotive electrical circuit's ? Do you know what a wiring diagram is ,how to read one , use a DVOM - digital volt ohm meter ? Reading factory service repair info. on how these systems work would be a good idea also . But the main thing would be to look at wiring diagrams to see if these thing's share a power or ground supply . You look at wiring diagrams here http://www.bbbind.com/free_tsb.html Enter the vehicle info year , make , model an engine size . Under system click on body & accessories ,then under subsystem click on instrumentation . Click the search button then the blue link.Scroll down through the diagrams an note all grounds , wright them down . Find the diagrams for all the affected systems an wright down ground #'s . Watch these video's on electrical testing .
Electric Testing Techniques You Need to Know