This product 17800593 GM Accessories has been discontinued for over 10 years. This was designed for 2005-2013 C6 Corvettes. There is not much information still out there for this item. I found this on one site using Google Note: As of 5/1/14, the list price has doubled.  The "going" price is now around $330 for an original PAL! Shipping is free on this item. Thank you