I've been a chevy owner for 22 years. This is the first time I have ever regretted buying one. I didn't know anything about active fuel management on GM trucks. After driving this truck for 3 weeks, the engine light started to flash. The codes P0301, 0455, 0521 were found buy my scan tool. That code P0301 will determine if I'll stay a fan of GM vehicles. That code has a price range from $700.00 to $7,000 repair bill. We'll see when I take this truck to the dealer tomorrow.
Bought new, Loved everything, wanted to keep until wheels fell off. Then, the rear-end fell out of my dream! At 96,000 rear-end had to be rebuilt. 38,000 later, pulling a 12 ft trailer, rear-end went out again. Replaced with a rebuilt one. Just a few thousand miles & I can hear the familiar hum again. Many Avalanches must not have this problem, but if you got one with a faulty rear-end, it must be faulty from the factory, and can't be corrected. I'm now figuring, any rebuilt you buy is one of the faulty ones that can't be really fixed. So I guess I'm in a fix, unless I get one off a wrecked truck & pray it's from a truck with a good rear-end. But this is spending around $1100 to $1400 everytime.