I just bought a 08 Z71 tahoe about two maybe three weeks ago. After the second day I noticed a squeak in the front end. I took it up to the dealership yesterday and today they called me back saying it is the grill and the bumper causing the sound. He also told me they checked out the other new Tahoes on the lot and they had the same problem. I was wondering if anyone else notices this noise? I am not sure if it is just the Z71 or all of them. Please let me know if you have noticed this because I am not to sure I believe this explanation.