Bravada/Blazer climate control Blend dor problems - still

I guess I was posting to a dead thread. I am still having problems.

So I am reposting my last post from that thread.



http://www.automotiveforums.com/vbulletin/images/icons/icon5.gif Re: climate control blend door problem [Solved]
I am wondering if anyone reads these posts?

Ok I have found the actuator, managed to remove it (only a half dozen bloody spots on my hands from squeezing hands into where they were obviously not intended to go), disassembled it and found a small crack in the large plasit gear but it was not acutually broken.

I connected it to the wiring connector and it turned on and ran slowly - once. There after it did not move except for about one second bursts and at no specific time.

I back probed the connector with the switch on and got 12+ on the brown wire as I expected after finding a wiring diagram on here. The return wire from the pot inside (forgot the color code but maybe was the light blue) would go from 0 to about 5 volts depending on the position of the large gear.

Before spending the $100 or so to replace it - is there anyone with any other testing I can do to verify that it is really this actuator that is the problem?

you're probably going to end up replacing it, but here's a previous thread on the subject:
http://www.automotiveforums.com/vbulletin/showthread.php?t=443884&highlight=blender

My experience here (98 Bravada):

http://www.automotiveforums.com/vbulletin/showthread.php?t=633165