Where can i get a Screen filter for my Fuel Pump?

Dear Readers,
I was wondering if Gm Sells the socks that goes over the fuel pump ? they should right because when i looked on napa and advance I saw none?

I'm sure GM sells them but they might have you buy the whole pump as well. 
 
Just because this is so unique of a question, what is wrong with the one now?  I'd assume it is gummed up, but you can usually clean them.
 
Might just want to grab a comparible one at the junk yard.

Thank you yes i am dropping my tank and putting a new one in and i just wanted to replace the sock? Might as well since ill have the dang thing off lol =)

Ohh!!  That's right you had the rusty tank in the other post.  Yeah I would change the sock as well.