2003 Suburban 1500 5.3 Vortec flex fuel engine dies but restarts

[Morguns1cam]

Engine dies or looses power door locks lock and unlock. No codes, checked wiring and grounds all look great, replaced crank angle sensor. Looking for any suggestions!

thanks!

 

[Sharpz]

22 hours ago, Morguns1cam said:

Engine dies or looses power door locks lock and unlock. No codes, checked wiring and grounds all look great, replaced crank angle sensor. Looking for any suggestions!

thanks!

 

I would check your ignition wires first, then check the ecm or maybe bcm?  Maybe just a faulty wire that when heated up loses good connection, then cools and is serviceable again.  I start here because of the fact you are not throwing codes.  At the very least if it was a Crank Position Sensor you would get a code for it.  Same as any misfire.  Low fuel pressure should not cycle your door locks.

[Morguns1cam]

Crank angle sensor has been replaced, Im thinking the voltage regulator in the alternator is getting hot and the output gets too low, when it dies the message center says “ Battery not charging” . Ive got a alternator on the way.

thanks for the reply!

[Savage1]

I didn't think of that. I'm having the same problem one 2092 silverado. I've changed ignition wire, fuel pump, fuel filter, crank positioningsensor. I'm likebwtf