Question about 1999 Cadillac DeVille

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IT BLOWS COLD AIR ON THE PASS.SIDE WHEN THE HEAT IS ON

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There is a servo (I don't know what it is technically called, but it functions like a servo on an r/c car) behind the glove box that opens and close valves in the ducts. As the valve is opening or closing it can blow through the stop on the top of the servo over time, and it gives you half and half heat/ac. You can slide the bar on top of the servo to open or close the duct by hand. What I did is left the glove box in with only one face screw. In winter, I remove the glove box and slide a metal bar that connects to the servo over by hand in get heat, and slide it the other way by hand in summer to get ac. Otherwise, it was half and half, and passengers would get rather upset by the fact that while I had heat blowing on me, they had cold air blasting them during the winter. It seemed like a pain to replace it since it has screws almost impossible to get to without a LOT of disassembly.

Posted on Sep 06, 2010

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