2010 GMC Acadia SL Black, upgraded for towing 130,000 or so miles
The HVAC system stopped selecting different modes and was stuck blowing on my feet. I know this is normally a blend door (actually a mode door in this case) going bad so I got a new one. Dropped the glovebox and got it out of the way. Found out it will snap off it's hinges and can be completely out of the way. Removed the bottom panel. Removed the console side cover. Just have to remove the actuator screws. Here comes the dumb. At 70 years old I'm nowhere as flexible as I once was and the eyeballs are shot so I had to work by feel. Stick my arm in (d**** those sharp edges) and remove a screw. Root around and got another. And another. But the actuator isn't loose. Wait, here's another screw. And a couple more. Should only be 3 but - and then the actuator, a couple of plastic plates and gears and arms fall on the floor. It's the actuator for the doors that the other actuator actuates I guess. So, does anyone have a diagram, picture or whatever of the actuator actuator? And what exactly is it called? I think I have it reassembled right but I need to know how the arms attach to the doors, they look like they have little V's cut in them for timing maybe? Can it be reinstalled with the actuator attached? Oh, and I tested the old actuator by turning the ignition on and selecting different modes. Nada. The new one does move so my diagnosis was correct. It was the execution that was buggered up.