[sntrym95]

If you remove the blower motor, you should be able to get to the flap that allows air in and out. Try moving it, they get stuck sometimes. IIRC you have to reach up a bit into the motor housing to get to it.

Another thought - since you have a burb, you probably have the bypass solenoid. It should be the passenger side heater hose under the hood. Those are known for failing. I'd check that first. Remove it if you want and run the heater hose like the trucks. The SUVs had them because of the amount of space that needed to be cooled and keeping engine heat from the heater core provided colder air.