Ok so as you guys know, I have basically two identical 360's. Identical in all ways drive train wise except for the G86 in the 9-7. So when I pull away slowly in the 9-7, like still in first gear, I hear that low tone that you hear when a big Silverado or something similar pulls away. Like the rear end noise from a really high rear end gear ratio. The Rainier on the other hand that has the same V8 and 3.73 doesn't have that same low torquey kind of noise. It's basically quiet. I've heard the noise a million times from other larger suv's and trucks but only one of mine makes it. Is that the rear end making that sound and why do two identical 360's sound different? Maybe it's the fans or something else but honestly I always assumed the noise was the rear ends.