When you take your truck to a "Diesel Specialist" theoretically they DIAGNOSE the problem, then fix it.
NOT the case here: " buzz tested" said all injectors good; replaced IPR, didn't fix; bore scope, all cylinders good; replaced (or at least claimed to) all injectors and harnesses put in tuner and chip, $5000 charge.
Got engine light as I left.
Next day, SAME PROBLEM I brought it in for.
Finally diagnosed myself: Fixed it in 15 minutes with a $14 part.
If you want to throw money at a problem until it is fixed, use YOUR money, NOT MINE!
Clearly lacks diagnostic skills and the integrity to admit he doesn't know what he's doing.
PRIOR to this had transmission and water pump replaced: Wondered why always low on antifreeze, water pump LEAKING all around pump/block interface and outflow interface. All the places there SHOULD have been new gaskets.
Do it yourself or go elsewhere, but DO NOT go here! read more