take them out :)
To remove center air vent s a t20 tool is needed. Unscrew, climate control unit and compartment. After it is pulled away, their vents are exposed. To remove air vents unscrew bolts and pop out of place.
prior out with a flat screw driver
To remove the air vents on a 2004 Pontiac Grand Am GT, a person will have to pry them out with a screwdriver. Apply gentle pressure between the vent and the dash.
the radio is below the center of the windshield, right below the air vents... If you mean how do you REMOVE the radio then that's another question altogether. PULL out center air vents, REMOVE ashtray, there are 2 bolts there and 2 where you removed the air vent. Remove those and your there.
Return air vents.........
You have to remove the vents of the air ducts. Then use a vacuum to remove any debris. After that you can use a stringy mop to dust the rest of the vent out.
If you are attempting to remove the center air vents in the dash panel you will need to: 1. Remove the driver side Cigarette Lighter and the Passenger side Auxiliary plug-in. To do this locate the slot at the bottom on the each of these that will allow you to pop it loose with a screw driver. 2. After removing the panels un plug them and set them aside. You will then see 2 screws, remove these. 3. Carefully pry the panel loose. It will pop off but use gentle force so you do not break the panel. The air vents come off with the panel. From there you can remove them or clean them...
Replace the cabin filter. remove panel under dash on pass side.
I'm not sure what vents you are talking about, but usually air vents are known to be working if there is air flowing through them.
the middle vents only supply air from the ac unit using a separate in dash fan. the floor and defrost vents come only from the heater
Cold air return vents are the ones on the wall