1992 Cadillac Sts Heater Blowing Cold Air On

1992 CADILLAC STS
175,000 MILES
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the heater is blowing cold air when heater is on
Oct 18, 2012 at 4:25 AM
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HMAC300
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check to make sure hoses are hot going in an dout of heater, if they are then it may bea n actuator on htr box or something in the auto temp control is messed up an dneeds to be looked at . generic pic inclosed.
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Oct 18, 2012 at 1:58 PM
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