Some of you may know this already. Per my dealer, you cannot get the Conquest rebate ($500) if you plan to use the GM supplier discount. I found out about this at the last minute when I picked up my Enclave. The dealer said there was no way to know this until he enters the vin #. Whatever! I was so mad about this. He was able to re-crunch the numbers and give me $200 + a free oil change, but I almost didn't take it home.