Has anyone ever replace the 'MODE' servo for the a/c? I can't determine if I can unscrew and replace it while the dash is in.

I performed this repair this past weekend. It wasn’t easy but doable. You’ll need to remove the glove box and as well as the assembly for the upper storage compartment to get access. The latter is held in place by 2 upper and 2 lower screws. You will also need to drop the bottom panel which is held in by clips and a couple of screws. They will be visible with the glovebox removed (this will make it easier to recover things when you drop them). This will give you enough access for the job.

Next, disconnect the connector from the top of the servo. I also disconnected other wires nearby and detached the strain relief connectors for the nearby wire bundle. I was able to easily remove the top front and back screws of the servo bracket but could not access the lower back screw. I could barely feel it with my finger, let alone get a screwdriver on it.

My approach was to remove the three small screws that hold the metal bracket to the servo assembly. The top two were easy – the bottom was not. I would up using a small 90-degree ratchet screw driver I picked up at Harbor Freight (for $3 – worth every penny!). Patience is the key for this because there is very little clearance. Once the screws are out you need to bend the bracket outward to remove the servo. Just reverse all of the steps to finish the job. You’ll need to move the plastic slotted cam from the old servo to the new one. Use a screw driver to lift of the clip that holds it on. Also, be sure that the mode door arm is correctly fitted into the slot in the cam before you bundle everything up. It’s hard to see and you can only tell by running the climate control through its paces. The entire job took a couple of hours and much of the time was trying to figure out how to remove things without breaking them. Good luck and remember the key is patience.