OK; let's say I am driving and I notice an Acadia as I approach from the rear. I can't seem to tell a difference between any of the year models unless it's a Blue/Gold (then I can narrow down to 07 or 08). Otherwise how do you tell the difference? I know for 09 they removed the Acadia badges from the doors; other than that I can't seem to tell a difference. The only other thing I can think of is Silver/Green and I think that is an 09 color? Maybe 08?