2001 Tahoe power window switches not working for passengers ONLY.

[2006Tahoe2WD]

That makes sense. Probably jammed because it doesn't get used much. I guess time to take look.

I pulled the door card. Nobody had been there before (~18 years). The consul on the passenger side that holds the window and lock buttons doesn't pop out. There is a screw inside. Don't try to pry it out, you will break the tab. You can take the DC out and then reach around and unscrew the front mounting point.
Results - @justirv had it correct.... the window was stuck enough that the motor could not start the movement. I checked the 2 pin connector going to the window motor and it was getting +/- 11.5 volts using the switch. So I knew the controls/etc. were working. I losened the regulator and futz around and got it to start working. I guess that's it for now. Didn't really find the root cause. Taking the complete regulator/etc. out looks like huge PITA so I didn't go there. I bet the regulator is not that well aligned with the door frame because the motor slows down in mid motion on the way up.

 

[Doubeleive]

I pulled the door card. Nobody had been there before (~18 years). The consul on the passenger side that holds the window and lock buttons doesn't pop out. There is a screw inside. Don't try to pry it out, you will break the tab. You can take the DC out and then reach around and unscrew the front mounting point.
Results - @justirv had it correct.... the window was stuck enough that the motor could not start the movement. I checked the 2 pin connector going to the window motor and it was getting +/- 11.5 volts using the switch. So I knew the controls/etc. were working. I losened the regulator and futz around and got it to start working. I guess that's it for now. Didn't really find the root cause. Taking the complete regulator/etc. out looks like huge PITA so I didn't go there. I bet the regulator is not that well aligned with the door frame because the motor slows down in mid motion on the way up.

spray some lithium grease in the channels, that will help, might also help if you removed the 3 bolts on the motor and greased up the gear in there also