Fuel Tank and Lines

Fuel Tank and Lines - 6.0L Diesel

The diesel fuel system consists of the following components:

- Fuel tank
- The midship fuel tank is between the frame side rails on the LH side
- The aft-of-axle fuel tank is mounted at the rear of the vehicle between the frame rails

- Fuel tank filler pipe without a restrictor plate
- Threaded fuel tank filler cap
- Fuel conditioning module (located on the LH frame rail):
- contains the fuel filter and water separator
- has the Fuel Pump (FP) mounted in the top
- has an internally mounted fuel warmer (not serviced separately)
- contains a pressure relief valve for overpressure protection in the event of restricted flow

- Fuel supply and return tubes

The FP is controlled by the fuel pump PCM relay. Electrical power to the FP is provided through the Inertia Fuel Shutoff (IFS). The fuel recirculation/filter unit assists in preventing the fuel from gelling in the lines during cold weather operations.