New window reg assembly still under powered? 01 yukon

[clongstreet0498]

My driver side window wasn't working, replaced whole motor and slide bracket assembly now window will move slightly but seems like it doesn't have enough power to move. Problem w/ switch? Ground problem?

 

[inmypassatlife]

Bad switch

 

[Illnasty]

I have the same problem on the passenger side. Window doesn't have power to go down or even all the way up. I'm not fully educated here so what do you mean by the switch is bad? Do you think I should still replace the regulator assembly?

 

[inmypassatlife]

Replaced my infamous rear passenger window regulator andbteack since it was intermittently working and eventually wouldn't roll up, still had same issues with new one. Switched the driver side rear switch to the opposite side and it worked perfectly.

So I ordered a used switch on eBay and now it operates flawlessly.