One problem related to power window has been reported for the 2004 Chevrolet Avalanche. The most recently reported issues are listed below.
Power passenger window failed. Cable frays and jams in mechanism, window will not go up or down requiring costly replacement of the mechanism. This same failure occurred on my previous 2002 Avalanche and my sons 2000 silverado pickup. The window was used very infrequently on all three vehicles.