I have a '93 gmc 1500. The passenger window doesn't go up on it's own. I've heard it's just an adjustment but I can't figure out how to adjust it. It goes a few inches up, and then the front end of the window will stop, the back will keep going a little bit, it'll get crooked and then stop completely. The only way to get it up is to put upward pressure on the font of the window. Any idea will help, thanks.
Steve

 

check to make sure there is not a broken window guide

 

im not sure, but many newer vehicles have a sort of track which guide the glass up and down, and it can come out of that guide. does the door panel appear to be easily removable?

 

The door is very easily removable, I had the cover off once, and underneath is a black metal sheet that the window motor mounts to that is also removable, the track mount bolts are accesible at this point or adjustment bolts, but I can't figure out how to move the track or if it's even possible.
Steve

 

Thanks guys, I was muckin around with it again and I found a bend in one of the tracks, so I took the track bracing off, straightened it, put it back in and sprayed white lithium greese through it, and it works like new.