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I have a 92 Deville and cold air comes out when i put on da heat


borncrooke
01-17-2007, 12:36 AM
My deville has no heat and all the thread dont explain fully how to check or correct the problem. Its a 92 deville.

caddydaddy
01-17-2007, 04:25 PM
Do both hoses to the heater core have heat to them? If the heater core is clogged, or the valve controlling them is stuck closed, it won't allow hot coolant to the heater core.

barbquebutt
01-18-2007, 04:42 PM
check your thermostat plunger. if that's not working, you could blow a head gasket and then you'll be really screwed.

Dr. P
03-19-2008, 11:04 PM
This may help you if you find a way discover the AS00 through AS12 Code Override function in your model year (the displays for you will be different but the cars are about the same)

http://www.automotiveforums.com/vbulletin/showthread.php?t=894740

83cutlass
03-25-2008, 08:37 PM
most likely a plugged heater core. flush and backflush the heat core.

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