02 Envoy with 80,000 miles. My wife drove to the doctor fine this morning. I get in it one hour later and try to crank through the open window while holding my daughter and it tried to run for about a split second and died. Now it turns over but will not even attempt to run. It turns over really good. The battery is fine. Checked the gas cap. Its tight. Unhooked the battery for about 15 minutes,(is that long enough) that didnt work. All the lights still work and I can hear the fuel pump priming. I checked some of the fuses I thought could be it and didnt find any blown although I didnt know what some of them stood for so dont rule this out. Had this car for over 3 years and never had a problem until now. I searched 7 pages on here and 90% of threads were for the truck not even turning over. Any help is appreciated. I am fairly lost with newer cars but Ive been spinning wrenches on 1st and 2nd Gen small blocks my whole life. This is our only family car too. Thanks.