89D15CRX Posted September 11, 2009 Report Share Posted September 11, 2009 I have a 95 Deville with the 4.9. I'm having a problem with my heater. It will not blow out of the vents. Also when I turn on the defrosters, it only comes out hot in the middle and cold on the sides. I also notice that my AC is kicking on at the same time. Are there any tricks that I should be aware of that could help remedy the situation? Also, my driver's side seat heater stopped working. The light is still on when I move the switch but the heater doesn't work. Are there any tricks I can do to fix this? PA winters suck... Link to comment Share on other sites More sharing options...
KHE Posted September 11, 2009 Report Share Posted September 11, 2009 The air conditioning compressor running when the defroster is selected is normal - it is to dehumidified air removes fog much faster from the windshield. As far as the air only coming out of the defroster outlet when the heat is selected points to a vacuum leak under the dash. Pull the lower hush panels and start tracing the vacuum lines from the blend doors to the climate control panel and you will probably find a cracked or disconnected hose. It sounds like the seat heater had a failed heating element. Not an easy fix - You need to change the seat cushion I think unless a service element is available. Kevin '93 Fleetwood Brougham '05 Deville '04 Deville 2013 Silverado Z71 Link to comment Share on other sites More sharing options...
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