Electrical and fuel-system work on 6.6 Duramax is a specialty here. We find the broken wire, not a parts-cannon bill.
Chevy / GMC Duramax
6.6 Duramax — diagnose it, do not guess it
No transfer pump, complex electrical, expensive misdiagnosis. Winners Diesel has technicians who live in these trucks so your Silverado HD or Sierra HD is not a parts experiment.
Get the truck back on the route.
Call the shop. Tell us the fleet, the engine, and what it is doing. We will get it on the board.