Yes, you can buy the new key and fob from a dealer, ebay, gmpartsdirect or any number of places.
I had to go to a dealer to get a replacement fob programmed for a Grand Prix I bought last year, and the dealer charged me $50 for the programming (I supplied the fob.)
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GXP, Sly w/ Black Leather Interior, Loaded
Purchased off the lot on 6/30/2007 from dealer stock to replace My Baby, lost on the Tail of the Dragon on 6/25/2007. You can read all about it here, Tail of the Dragon - Accident
Email me if you are interested in joining the Mid-Atlantic Solstice Sky Club (MASSC) for NJ, NY, PA, DE and MDdscheneck@msn.com
Red Bull Drift Team 2008