Model Years Affected: 2004, 2005, 2006
The fuel pump may fail causing the engine to stall and not restart.
Truck runs out of gas at the 3/4 to 1/2 tank problem seems to be with the transfer pump from one tank to another
Q&A > Chevrolet > 2002 Chevrolet Avalanche 2500
Common Problems > Chevrolet Avalanche 2500