Stalling 5.3 LM7

[04BlackMagic]

2005 Silverado 1500 5.3 LM7

 

Backstory: driving when all of a sudden engine shuts off and won’t restart. Towed home and was able to restart for a few seconds then stalls. No codes, no indications. Like flick of a switch

 

What I’ve done so far:

Fuel pump is good. Puts out continuous pressure of 55/60 psi

Cleaned PCM main ground under drivers door

Have strong spark

1/2 tank of fuel

No codes

Swapped mass air flow with known good one

Dielectric greased PCM electrical connector

Small single wire for engine ground is not loose nor cut in the back of engine bay

 

Was able to have run for 10 minutes without any problems then it cut out

 

Checked anti theft trough scan tool and everything is agreeing with each other

 

Any advice? Thanks greatly appreciated

 

 

 

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[04BlackMagic]

Anybody???


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[riverbanks]

Many possibilities,crank sensor?wiring harness? right behind power steering pump is a harness rub issue,get it running,and start wiggling wires,see if you can make it stall

[Kylebr1]

Plugged cat ? 

 

[Mikebtte]

Is it really a half tank of fuel or is the gauge showing a half tank? Did you verify it had fuel?