Heater still runs when car is turned off and keys out of ignition
CHARGERFAN
MEMBER
1992 CADILLAC DEVILLE
17,460 MILES
The heater is still blowing when the car is turned off and keys are out of ignition, what could this be I. Replaced the heater switch and problem still exists.
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Tuesday, December 13th, 2011 AT 11:15 PM
2 Replies
RASMATAZ
MECHANIC
75,992 POSTS
Check the blower motor relay could be sticking
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Tuesday, December 13th, 2011 AT 11:24 PM
FACTORYJACK
MECHANIC
4,159 POSTS
Faulty blower power module. Located in the hvac case, on the firewall side of the engine compartment, about center. Has 2 electrical connectors, one two wire, and one four.