I have a 2004 Chevy Avalanche 1500 4x4. Got 11500 miles on it. It's a great vehicle with one very annoying aspect. I've heard others, owners and non owners talk about how this truck dances on the road and blows around a lot in the wind. Well mine certinally does. Way too much I might add. I've scanned the web for anything pertaining to this and I still don't know just what the cause is or what to do about it. I assume that Chevy designed it this way to give it the very soft ride that it has. The dealer certinally is no help in this matter since we all believe there is nothing broken. It's just supposed to be that way. BUT what exactally is the cause ? Soft springs and shocks, weak sway bars, lousy tires, too much overboost in the power steering or a combination of all. Other then this truck having coil springs in the rear it almost identical to the 2000 Silverado underneath that I had last, and that truck did not exibit this trait. The Avalanche is at it's worst just off center. Once in a turn and has a load on the suspension it seems to get much better. I could upgrade parts one at a time to see what has the most effect but that could take a long time and a lot of money.
Any and all opinions greatly appreciated.
Fred