SDRHC,
How did you get that loyal customer email from Chevy? I haven't seen any loyal customer discounts lately - and I've even asked Chevy if one was available (to which they said 'no'). Typically the loyal customer incentive is offered in January when car sales are slower.
Hold it - I just talked to someone at Chevy and the claim is that there is some "manifest list" that I may be on that would give me a loyalty discount. They wanted all my personal information, but I balked at giving them that because frankly I don't trust that this wouldn't be mass distributed to dealerships in my geographic region who would then 'see me coming'. So I can either ask the dealer to look me up at the time of purchase (the answer, I'm sure, will be that I'm NOT on any such list and therefore NOT eligibile for a loyalty discount), OR I can contact Chevy directly at purchase time and check with them. I think I'll do the latter since who can trust a dealership, right???