Stalling w/ no forewarning - 2500HD

[2500HD4x4]

After a thorough cleaning of the throttle body, idle air control valve, and mass air flow sensor, the stalling problem has not returned. Although I'm not 100% convinced that it's fixed yet, the idle air control valve had a lot of cabon build up on it, and I think that was the problem. Either way, I'm remaining hopefully after no troubles for the last few days.

I had also jiggled the fuel pump relay around for a while, maybe that cleaned the contacts just enough to make it work. We'll see what happens next.