One or more heater & AC (HVAC) temperature and/or air delivery mode door actuator may fail, resulting in improper temperature or air delivery. If this occurs, fault code(s) should be stored in the HVAC control module which should assist in diagnoses.Google+
Car Problem Reports
Oldsmobile LSS Heating and AC Temperature and Air Delivery Mode Door Actuators May Fail
Oldsmobile LSS Problem
Average Mileage: 110,000 mi (100,000 mi - 120,000 mi)
Visitor, 1996 Oldsmobile LSS, 100,000 mi
When I turn the heat on it blows cold air out of the defroster and hot air on the floor.