The fuel pump may fail causing the engine to stall and not restart.Google+
Car Problem Reports
Chevrolet Tahoe "No start" Caused By Failed Fuel Pump
Chevrolet Tahoe Problem
Visitor, 2004 Chevrolet Tahoe, 100,000 mi
Stalled in the middle of rush hour traffic. Couldn't start, turn, or crank. Had the fuel pump replaced for almost $1200. Cleaned the fuel lines while I was at it, too.