I noted with the colder weather (or lack of iPod being on*) that I've got a bit of tranny whine that I'm not sure I had all along. I've got 94k on the '08 V6 already, and I occasionally tow my quads (enclosed 12ft v-nose, 3000lbs fully loaded if that.) I will say that I'm probably a ratchet shifter junkie though, especially when slowing down while towing... but I drive it like a little old lady when towing, and a [CENSORED] maniac when I'm not.... seriously, the 'stop-light Gran Prix' is alive and well with this one.... ok not really.....mmmmm ok maybe a little.....

It increases and decreases with RPMS, it's not loud, but enough to make me notice..... Could it be something simple like low on fluid? Had it at the dealer recently for some TLC and they noted nothing out of the oridinary...but I dont know.... somethings there.
Happens when cold, (and we recently had some snow already

MM