Won't start issue

[westman]

Went out this morning and my 99 Yukon SLT with the 5.7 vortec won't start. It acts as if it's starving for fuel. It'll run for about 5 seconds and then surges and dies. I tested the fuel pressure, it remains a constant 60psi. I'm assuming the spark is ok since it'll fire for a few seconds. I'm breathing, so it's getting air. Not sure where to go from here. Any suggestions? Oh and there are no trouble codes or flashing lights on the dash.

 

[SunlitComet]

do you have a factory alarm on it and does its light function correctly?

 

[westman]

As far as I can tell, everything is factory and working properly.

 

[westman]

strangest thing, I got frustrated, decided to say !@#$ it and put everything back together. Was gonna have it towed to a friends shop and bam.... stupid thing fired right up and runs great again. Electrical Gremlin maybe? Pretty sure I haven't seen the last of this issue.

 

[SunlitComet]

exactly what did you disconnect?

 

[westman]

I disconnected the positive battery cable, MAF sensor, and that was pretty much it as far as I can remember.

 

[SunlitComet]

if the dash engine light did not light up when you turned on the key before the failed start but works now it could be a damaged pcm fuse or a defective ignition switch or the pcm.

 

[westman]

I'll have to keep my eye on it. So far so good though. I'm hoping it was some sort of freak accident, but unfortunately that's normally not the case.