2011 Chevrolet Impala, Stall/No Start

Brought in on the tow truck, this vehicle died on the owner while cruising down the highway. . They were not able to restart it. I had a great time troubleshooting this one, and we learned a lot of good lessons on GM flex fuel vehicle! Some methods used... Basic no start troubleshooting principals. How to test a fuel pump. How to check for injector pulse. Fuel pump current waveform analysis. How to test a variable resistor. Sensor substitution using known value resistors. GM Flex-Fuel system variables How to prove out fuel gauge accuracy.