trouble with power window switches

I have a 2005 GMC Sierra Z71 why does my RH power window - door lock switch, remote, and RH control button on master LH switch quit's then work's? pickup in which I am having alot of trouble with power window switches. I have changed the RH window switch 3 times, it quit's working and at the same time the RH control button on the master LH switch quit's and the remote quit's also. Only thing that works is the driver's side window switch and door lock. Then all of a sudden it all decides it will work again and starts working like nothing is wrong.