i just purchased a set of 91 front power lumbar seats. They are in real good shape but when i put power to them and push the switch you can hear the motor going but they don't more at all. Im thinkin the gears if there are any are worn?? any ideas? anyone know how they work?
thanks,

 

hey guys just figured out the lumbar situation. Im an azz the switch isn't supposed to move the seat.. she fills the lower back with air .. thanks anyways

 

It gonna have pump that fills a blader with air. So if pump is working and it dont get hard or limp, then you have blader or hose problems. Take her apart.