1995 Cadillac Seville SLS the heat won't work. Defrost works only on passenger side and rear defrost.... What could this be? Heater core, thermostat? Really confused where to start

Asked by Nov 22, 2015 at 01:21 AM about the 1995 Cadillac Seville SLS

Question type: Maintenance & Repair

1 Answer

73,115

Is the motor heating up to operating temperature? If not then yes, the thermostat. As far as the flow of air in the cabin, there are heat vent actuator module, or modules under the dash that go bad.

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