One or more heater & AC (HVAC) air delivery and/or temperature mode door actuator may fail. This can result in incorrect air delivery or temperature. If this occurs, fault code(s) stored in the HVAC control module should be available to assist with diagnoses.
Car Problem Reports
Cadillac Seville Heating and AC Temperature and Air Delivery Mode Door Actuators May Fail
Cadillac Seville Problem
Average Mileage: 100,666 mi (90,000 mi - 112,000 mi)
Visitor, 1991 Cadillac Seville, 112,000 mi
AC blows out heater and defroster vents and NOT out the dash vents where it is supposed to come out. It's not fixed yet but it seems to be a control or lack of control problem as in actuators failing or something like that.
were here inwisconsin can't get heater to work fan blows repaced thermostat still no heat??????