2001 Suburban Window Roll-Up Problem

OK, I installed a window roll up module on my 2001 Suburban and have two problems. The first problem is that sometimes when I arm the system the window won't roll up all the way. I turned up the sensativity on the module and still, sometimes it stops and sometimes it doesn't. The second problem is the wiring. I installed the module inside the door and wanted to run all the wires to the driver side switch.  Is this possible, I posted before if this was ok and some people said Yes. For the drivers side window, the wire to roll up the window has no voltage when is switch is not pressed, when the switch is pressed to close the window it gets 12 volts. For the other three windows, the wire get 12 volts all the time and when you press the switch to close any one of them the voltage goes away. ????????????? I dont get it.

It happened to me when I got the first 2000 Suburban into the shop 3 years ago.  I had to use heavier gauge wiring going to each door rather than using the wire  the system came with. That solved the problem of the window not closing all the way.  Looks like those motors really need voltage and thinner wire just don't hack it.

Its only the drivers window. The wiring in the drivers switch is strange, I didn't try and dont think I can wire the rest of the windows from there. The drivers switch applies 12 volts to the motor to roll it up. The rest sit at 12 volts all the time and when the switch is applied, the voltage is removed.

Here is the module I bought, I guess you get what you pay for. I think I will need something more heavy duty