Engine stalls after few minutes running???

What is your question?

The engine is LML DURAMAX with 201k miles, new batteries, new crankshaft position sensor, new fuel filter/& housing/rail/pressure regulator and coolant tank, still stalling after few minutes running, sounds like air in the system???

What makes this problem better or worse?

???

How long has your 2011 Chevrolet Silverado 3500 HD had this problem?

5 months