Originally Posted by lash
You DO know that GMPD they are talking about is gmpartsdirect.com, right?
No I didn't! That info is what I needed!! I just checked their web site and, while still expensive (about $375 for the pair including shipping), it'* about half of what my local dealer quoted. While the junk yard is still a possibility, given that the original pair only lasted 12 years before cracking with no apparent cause, I'd hesitate spending more than $50-100 on a use pair.
But mostly, thank you for deciphering GMPD for me. A much better source for new parts than a regular dealer -- certainly than mine.