Anyone have the solution to troublesome electric window problems on a 99 Tahoe?

Passenger side stopped working:
1) All fuses checked good
2) Power at the swich - Good
3) Power at the motor - Good
4) Assembled everything and the window starts working again.

Today the driver side window will not operate - Do you think its the switch, electric motor, or loose conection?

Thanks In Advance

 

Both windows did not work and one switch unit works them both. I would go for a switch. Its cheaper and easier to start at. What screws you is I have seen power go to the drivers side switch and then to the other windows from it. When the drivers side went bad it woulsd stop the other windows from working. Plus that is the switch that gets a lot of use.

 

Also keep a eye out for broken or almost broken wires in the door jambs. Not a usual problem on Tahoe's but never say never.

Guesstimate, do a switch first as suggested, then go from there.

 

Will do...
Thanks guys!