[flyin6]

I just bought one in June, my treatment was much different. You might try Jeff at Hummer of Cincinnati.
We chatted on the phone, I had done my home work, so right away he was talking invoice. I went over to look at the vehicle, I wanted a black SUT, he had one. We talked some more, and he asked if I worked for a GM supplier. Basically he did everything he could to get the price lower. Crazy thing was, I wasn't trying to negotiate, but I guess he figured out I was a serious buyer.
Bottom line, I got the gm supplier price and 0% for 60 months. Heck I was just going to pay for the thing, but with 0% I guess I'll just keep the money in the bank.
I think the supply is limited right now, but I'm pretty sure they would trade with another dealer to get you the truck you wanted.
I think mine MSRP'd at around 59+, I bought it for around 54K + tax