2003 Chevrolet silverado-Doesn't want to start good, tried to die at stop sign, and using gas
1 Answer
I looked at 03 silverado 1500 5.3L engine, vin x. How long since a tune-up? Any applicable trouble codes? Use a gage and check proper fuel pressure, my info says 55--62 psi, so if your about in the middle, sounds fine. Some GMs will hold fuel pressure for a bit when you turn the key off. So see if pressure holds, If it drops like a rock, you need to check for fuel pressure leak. Maybe fuel injector is leaking or fuel pressure regulator, maybe the pressure is draining back through fuel pump? As far as idle check and clean anything that has to do with idle air system. See if it helps?