HELP! Where can I find pt.#12344262

I have been told by numerous Chevy dealers across the U.S. that my part (a rear window air reflector #12344262) for a 97 Chevy Suburban has been discontinued. Therefore, no Chevy dealers have this part. I'm hoping that someone here can recommend a place where I can find this part (GM #12344262).

Thanks for any help that you can provide in helping me locate this part.

Jabs