So, I know there are a bunch of threads on window issues, but after searching around for about 20 minutes I couldn't find any with this particular issue, so forgive me if it's been posted about before.

Anyway, I've got an 85 K5 Blazer with crank windows, and the driver's side window won't roll up or down. The crank does not move. For a while it functioned, then it seemed to stop working out of the blue. I tried moving it, and it did indeed move, but required a lot of force, and fearing breaking something, I stopped trying. Now it doesn't move at all with any reasonable amount of force.

Any thoughts on what it could be or how difficult it'd be to fix?

 

Sounds like you have a problem with the regulator. I would pull off the door panel and lube up all of the joints, gears, etc in the regulator. While you are in there, take a look at the window channels and make sure that the felt isn't bunched up or jammed in there.

If you can't get the regulator freed up, you will have to remove the regulator and try to free it up outside the vehicle. If you still can't get it freed up, then you'll have to replace it.

*Moving to Full Size K5 Tech* - The 1st gen tech section is for 1st gen s-series technical questions.