Fuel Tank and Lines

Fuel Tank and Lines - 4.6L, 5.4L and 6.8L

The 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 which contains a restrictor plate to permit only unleaded fuel to be pumped into the fuel tank
- Quarter-turn fuel tank filler cap
- Fuel tubes
- Vapor tubes
- Fuel Pump (FP) and sender assembly which provides filtered, pressurized fuel to the engine and a signal to indicate fuel level to the instrument cluster, and contains:
- a serviceable fuel sender.
- an inlet filter.
- a check valve that maintains system pressure after the FP is shut off.
- a lifetime fuel filter.

The FP is controlled by the PCM which energizes the FP control module. Electrical power to the pump is provided through the FP control module.