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Showing results for tags 'Prolonged cranking'.
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New to the forum here... Need help! No start, hard start WHEN HOT on my 2009 Silverado 1500 5.3 flex fuel, Vin 0. In the rear I have replaced FSCM (gmflash), fuel pump, fuel rail sensor, charcoal cannister, vapor purge valve, and gas cap. In the front I have replaced plugs gapped .04, injectors, coils, wires, tps, maf, map, crank sensor, cam shaft sensor, oil pressure sensor, coolant sensor, purge valve solenoid next to fuel rail, starter, alternator, battery, neg & pos wires. Was slowly replacing these parts when the hard crank began after the fuel pump was replaced. I had the mechanic replace it again just in case the check valve or something was bad but there was no change. Also this is my second set of injectors since it began. I am at a loss. Vacuum leak? Circuit problem? Anything you guys can throw my way is much appreciated.. Just in case it matters.. I had all lifters replaced because of #4 breaking about two weeks before the prob started.