swathdiver
Full Access Member
I am a HUGE stickler on suspension. I have an 08 and my wife has a 12 both have Auto Ride, 22" wheels with Michelin Defenders, 2/3 drop. My 08 drives much smoother than the 12 (I've replaced upper and lower control arms, front springs (because of sagging), rear shocks, and rear springs on both. The 10+ front door panels are cheap, creaky, and break often compared to the 07-09 panels. The floor covering for the second row seats is just carpet thrown over them in the later ones. I also think the seats are more comfortable in the early ones.
Did you run the same part numbers on each with regards to suspension components?
I knew about the door panels and agree that the older ones are nicer. Not aware of the perceived feel of difference as I have no frame of reference as you do. My wife though wants a newer one than mine because she is put off by the age they are getting now. I'd rather have an '09 Denali than a later one because of the engine and give up the software enhancements like Hill Start Assist and the cruise control updates and such.