I've noticed some side vents behnd the front wheels on some thirdgen GTA's, I think they are called air extractors, and I believe they are stock. I've seen them on second generation Trans Ams too. I like how they look, but what is the actual function of these things?

 

Theyre only on Trans Ams. GTA's did NOT have the side extractors. As for their functionality, Im not sure on that one.

 

According to GM they were for letting the heat and air pressure escape.Personally I think they are just for styling and don't do that much.I like the vents on the T/A's either way.

 

They don't do anything. When you pop them off and look inside, there is no place for air to come in.
The only good thing about them is that you have access to the engine harness when you are putting it in or taking it out.

 

ditto the above but yeah they look good...hey just a question why do you have z rockers on your ta

 

The Z rockers look good on the car. Makes it look different.