Power Window Issue

grrrrrr ok all my drivers door power window will go down fine.. but will not go up... the dealer said its probably not the switch something in the wiring??????????? help where do i find a diagram for the wiring for the driver door power window switches

I have had same problem with windows. I have a 99 LTZ.
And it has always been the switch. I take out the switch, and clean the contact points on the switch.
It has worked every time for me.
Hope this helps
Paul