I bought my Avalanche used. It is a 1500 Z-71 with 93K miles every option imaginable. I love the way it drives and is really good in snow and ice. The problems I am experiencing is the water pump, steering gear box, and Bilstein shocks have all just gone out at the same time!!! Talk about dumping some money into it all at once. Another problem is that when you drive the truck down the interstate and the wind is blowing, and it does not have to be blowing hard, you get blown all over the interstate. It is gets so bad that I actually take the long way to work using backroads when it gets windy. When I accelerate hard, I get a metalic sound coming from the engine and Chevy can't diagnose it.
The interior is great and the ride is really smooth.
Find out why the truck gets blown all over the road and what is wrong with the 5.3 liter engine making noises.