very little air flow
 

Hey all, I have a 1999 Lesabre and I am having only a trace of air flow out of any vent. I do not believe there is a cabin air filter unless it is hiding in a strange spot.

I have replaced the blower motor & it runs very strong. Could the climate control be defective? I wondered about an air blend door actuator, but there is no clicking sound like broken plastic gears that usually suggest that kind of issue.

I am hot & desperate, please help!