when it does the one second thing...will it start back up?any other problems?does the engine light come on?if so,can you give me the computer codes?tell me all you can
check the fuel pressure when it does this,,these must have no less then 60psi at all times.the fuel pump may be sticking
yes...you need to check the fuel pressure when it wont start......these fuel pumps will do this sometimes
let me know
I checked the fuel pressure it checks out good, some times it will stay running,some times only for 1 second,fuel pressure remains good 60p
if the fuel pressure is good...tune it up..new plugs,wires.rotor and cap..the cap and rotor can give a fit sometimes on these vortec engines
the crank sensor,,,it could cause this problem also
INSTALLATION PROCEDURE NOTE : Make certain that the Crankshaft Position (CKP) sensor mounting surfaces are clean and free of burrs before installing the CKP sensor.