Review on Dorman 604 101 Air Door Actuator by Marcelo Montalvo

I'm so glad it solved the air conditioning problem on my 2000 GMC Sierra. The compressor runs, the compressor clutch works as it should. My problem was that on days when the heat index is already 108 degrees, the temperature controller stopped working and was locked in the HOT position. This is a very easy install and once secured with two screws it was last in place. I did a reset by disconnecting the battery for a few minutes. When I started my truck it was cold again! If your air conditioner was working before and your temperature controller isn't adjusting for you, this "PERFORMANCE" will help. Then some cases would have been more difficult to diagnose but this did the trick in fifteen minutes for only $30 which was mailed to me on Sunday.