rear wiper

I have a 99 jimmy slt 4x4 4dr and the rear wiper for some reson will only move about 12 in. and then get stuck. Any ideas

does it make any noise when it gets stuck, like a loud grinding noise? if it does, the internal gears of the wiper motor are worn and the motor needs to be replaced.

no it doesn't make any noise and if i lift the wiper off the glass it works just like its supoust to.(no noise,grinding or binding)

sorry for the typos

same thing's happening to my '99... any ideas?

My wifes 99 Envoy did the same thing. There is a nice write up on removal in the How To section. What I did was remove motor/cover and drill through the housing and install a thin bolt with washers to hold the gears together (the problem is that there is a round compression washer holding the gears together, pops off letting the gears go nuts). If the motor works, spend an hour of your time instead of a new motor.

Hope this works for you.