Today I got a so called "Tracking Number" from the Auto Dealer that I ordered my Enclave from. It has 4 letters, a number, and then another letter. He said that it is slated to be built September First. Is this really a tracking number? And if so where do I track it's progress? I can't find any GM website that will help explain this. I haven't seen anything in this forum about any such numbers. Does anyone out there know anything about this or are they taking me snipe hunting for a cunutin valve ???