you should just be able to take out the 2 regulator clips off. And pull the arms back so the arms are not in contact with the glass. Then you would take the 4 bolts of the regulator and it should just slide out. And to pull the glass out, you must take out the felt seal thing at the end of the tailgate so the rails on the tailgate can fit through. Then you just need to take out the 4 3/8 size nuts off of the switch and the switch should just pop right out. Make sure you don't tarnish the seal on the switch when you are pulling it out.
Good luck!