Noise in the dash, HVAC? Coolant air pocket?

[iboughtatahoe23]

Having a weird noise in my dash when I lightly rub the engine, it started after I took the intake cover off to look at my purge valve solenoid. I did not mess with the solenoid or anything. And now it’s making this weird noise like somethings falling inside the dash on the front right side.

 

[iboughtatahoe23]

Rev* must be something with the blend doors???

 

[iboughtatahoe23]

Or maybe it’s a gurgling noise I can’t tell

 

[iboughtatahoe23]

Anyone hear it??