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Sorry to get your hopes up but I have a similar problem with my 2005 Yukon Denali. How long does the truck stay running before it shuts down? Mine started out with short spurts of the truck shutting down while driving. It slowly progressed to the point where it will only run for about 45 seconds. Originally the truck would sputter the gauges would die and then the truck would die. It slowly progressed to the point where it only runs for 45 seconds and there is no signs before hand. Does any of this happen to your vehicle? I have checked all of my cables and the main ground wires. Along with changing a few of the relays. Nothing has helped. My problem started with an electrical component heating up and quitting. Now it doesn't matter how hot it is in only runs for a couple seconds.
Before starting the engine, the fuel pump should only run for a few seconds when the key is first turned, to pressurize the fuel system. Even though the pump appears to be running, you may either have not enough or too much pressure for the engine to keep running (fuel pump or pressure regulator). I think it may just be a coincidence the engine quit while turning a corner, but the gas in your tank may have been so low it sloshed away from what is likely a very old pump, starving it and causing it to failure.