Blower motor not blowing

So the Ol' Lady just called me. Her '07 Taco dbl cab blower motor wasn't blowing any hot air on her way to work this morning. She says she can hear the fan, but no air appears to be coming out of the vents. It's gonna be dark by the time I get home to take a look at this. Anybody have an idea where to start looking? I searched, but couldn't find this particualr problem.

 

Like the heater hoses? The air being blown is warm, it just isn't making it out of the vents. Aparrently.

 

Does the fan blow on high but not any other speeds? I can't remember the part, but remember replacing it. It's on here and I want to say the part was around $40.

 

That sounds like that would be the resistor. I don't think that's what I need.
The fan sounds like it's working on all speeds, the air just isn't making it out of the vents. Wouldn't defrost the windshield.
She says it was like driving in my '57 VW Beetle!

 

Yep, that was the resistor that I replaced. The fan would only work on high.

 

Her fan woorks on all speeds. Air just ain't making it through the vents.

 

07's have the cabin air filter right? Not being a dick, but has that been changed at all?

 

Changed it last summer. Maybe I'll check it out. Everything worked good yesterday though. Can't imagine it getting plugged that quick.