01 PontiacAztek window switches

The Driver side window switch is erratic. It alwqays rolls down. The button has to be held “just so” to get the window back up. In cold weather, below 20 degrees, it won’t go up at all. There have been some long cold rides on the turnpike when I forgot. How can I remove and clean or replace the switch?

I am also beginning to have problems with the tailgate. The window always comes up but sometimes the tailgate won’t unlatch. Suggestions?