I went home at lunch time and plugged the actuator into my wifes tahoe. Didn't work. The tahoes mode door works fine after plugging it back in ( whew! ). I came back to work with my old actuator and took it apart. I noticed on the new one that it may have moved in one direction too far. I was thinking maybe the sensor was out of range. It seems like the mounting bolt acts as a stop in one direction and the actuator was a bit past it. So, I took it apart and carefully pulled the top gear off, and moved it back a little bit. I plugged it back in my truck and shazaam! It works!
Maybe I won't have to take it to the shop after all.
Ok,
Now a couple more questions.
There looks like there are 2 doors. One controls the dash vent and the other controls defrost/floor. The default on the dash vent seems to be open. However, it looks like to install the actuator I have to close the dash vent otherwise I don't think I can get it in there. Does this sound correct?
Also, when I install it does the last tooth on the actuator rest on the last tooth on the vent door arm or is it overlapped? If it is not overlapped then it would seem that I could set the actuator about midway, install it and then turn the switch to defrost and it would match it self up. Otherwise, I am going to have to set the actuator on defrost, and try to overlap the teeth when I install it.
Thanks for all the help
Erik