99 C1500 Blend Door Actuator STEM SMH :( Toughy

[stevejohnson48]

Originally Posted by shultzee13

I wonder how you test the servo off the car and not screw it up?

With it plugged in Without it being in the contact position with the shaft (lose but plugged in ) You can turn the AC on off and go from hot to cold and watch it perform??/ Its not a real fast motor because of the gear reduction ??/ But there shouldn't be any hesitation ( constant ) in the movement and not a lot of pick up ( Slopp ) at the ends of travel ??/ You can even hold a grip on the moving shaft while moving to determine if its weak or faulty??/