The heat stopped working in my van this spring. That was not a serious problem for most of the summer. Fall is here and naturally I had to fix it. The symptom is a "clunking" noise from behind the radio/climate control. So I removed the radio/climate control assembly by removing the two screws above the ash tray/cup holder. I had already broken off the other two screws that were at the top of the radio/heat control section when I replaced the radio. Way back behind everything was a white box where the noise was coming from. I started removing the box and I dropped my nut driver down inside there somewhere. Next I removed the two screws on each side of the bottom assembly that has the tilt out CD holder, and removed it. Then I retrieved my nut driver and went back to work.
Here is a picture of the top of the heat control door opener as is seen behind the radio. There are two screws to remove.