ANSWERS: 2
  • have to tried to replace the thermostat?
  • I have a 2001 s-10 with the same problem. I can't switch air from floor to defrost and I can't adjust air temperature. There are two separate parts that operate the air flow for defrost, vent and floor. They are located under the dash near the gas petal and are pretty east to get to. I am 6'2" and 250lbs and was able to look up in there. The part that opens and closes the door for your heat is electric and I haven't found it yet. I don't no why these separate parts malfunctioned at the same time. I am taking it to the Chevy dealership Oct 28,2008 to have it fixed.Winter will be here in northern Indiana quick. I will tell you what it took to fix it on wednesday Oct 29. Dave

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