the rear window in my full size 84 jimmy is kinda going up n down slow.I just got it a month ago so idk if it is slow or normal speed.It takes about 6 seconds to go up.is that normal?how hard is it to replace?and how much dose the new motor cost?I know you guys know your stuff,so please respond.I appreciate your help.mike

 

The motor is expensive, but easy to change.