03 trailblazer instrument cluster issues
 

Some one please help!!! Tired of messing with this car. I am having issues with my dash cluster. One day I start it and the dash turns on all lights and gauges work fine. The next time I start it nothing. No gauges or lights. Only thing that will work are turns signal lights and the check engine light when starting the car. (Which turns off after starting as it should) then I will drive down the road and BAM all the lights click on and go off just as they normally do when you start a normal car gauges start working and all is good. I have replaced battery and ignition switch. What is the problem???? Thanks!!!