Rear window crank problems

[Zoomad75]

You may want to keep in mind that if the lock in the handle is locked, all the handle will do is spin and not crank the window up or down. Seeing as you said you have not changed the lock cylinder, this may be your problem.

I've just rebuilt a manual regulator for my 75 Blazer and unless the ears were broke off the regulator where the handle mates too, there is not much else to look at except in the handle/crank assembly.