One problem related to abs brake fail has been reported for the 2004 Chevrolet Avalanche. The most recently reported issues are listed below.
Both brake lines from mazter cylinder to abs module failed resulting in no brakes due to excess rust on lines. Car failed inspection 1 and second year due to rotted rotors. Also recently fuel leaking from top ofuel tank and fuel lines from fuel pump module badly rusted. Worse yet frame is disintegrating. Due cheap steel. My 1998 chevy astro is driven and stored in like conditions and yet doesnt show the rust like the Avalanche. Thankfully I was not on the highway when lines blew. Avalanche is the first vehicle to have so many safety related problems due to defective materials. Didnt report earlier thinking it was an isolated case.