my 200 blazer window will ot go up ( the button) does not work but all the others do--please advise what could be wrong

 

the first thing i would check is the switches. if you take them apart gently you can look at them for corrosion or just general dirt. my window lock out switch was pretty bad once...i could operate the other windows from driver door but not the individual door buttons. i flipped it back and forth, then took it apart and cleaned it up...that did the trick.

also check fuses...the track may need some grease as well.
all that can be done short of the motor itself being bad for that window.

 

Mine does it when its cold out here in AZ, that like 45 degrees...brrrrrrrr...When it heats up around 100 and over it works fine. Master Lock started messing with me a little, but it cure itself ( I like it when that happens, hahahahaha). I did buy a new motor for the window, but it still is setting on the shelf waiting for it to go all the way out...To hot to mess with it right now anyhow...