Ill tell you what I do, find a used car dealer that is close to your GM dealer. Find out theyr address & all the phone #* you can. Then go to the GM dealer & tell them you where send from the other dealer to get a replacement part. They will ask you for Phone #* & maby address. They will give you dealers discount. If they dont have it right away thell them you will come & pick it up yourself, then call every day to check if it got there. They will call the dealer when they get it & the dealer will tell them they dont know nothing about it. when the GM dealer asks you about it, you pretend like your pissed & say: "they allways do the same thing, that place is a mees." or something like that. One more thing, you dont have to pay for the part until you go pick it up. So dont just in case they decide to take it to the other dealer. I dont remember what exactly what I payed but It was on the 200'* in Miami. Ill check when I get home & let you know.
2001 Blue SLE - 1995 Black SSE - 1988 Black GTA