Examples of vehicles equipped with an FPCM include:

2008-09 Hummer H2

2008-09 Saturn Vue

2008-09 C/K trucks (most engines)

2009 Chevrolet Corvette ZR1

With the increase in electronic returnless fuel systems (ERFS), it is important to know that there is a new module associated with ERFS.

The new module is called the Fuel Pump Control Module (FPCM) and it is a serviceable GMLAN device. It is a microprocessor that controls the voltage supplied to the fuel pump (located within the fuel tank) to achieve the desired fuel pressure requested by the Engine Control Module (ECM).
There is also a new fuel line pressure sensor, which sends a feedback signal to the FPCM, so the FPCM can determine whether the desired pressure is being achieved.

Fuel Pump Control Module DTC P069E

The FPCM stores diagnostic information, and if a fault is detected it will send a message to the Engine Control Module (ECM) to illuminate the malfunction indicator lamp (MIL).

When this occurs, DTC P069E will set in the ECM. The specific faults themselves, however, are stored within the FPCM, and must be retrieved using the FPCM menu on the Tech 2 scan tool. Faults may be due to issues with the electrical wiring or connectors in the FPCM circuit; or they may be due to performance issues within the FPCM module itself, the fuel line pressure sensor, the fuel pump MRA, or communications with the ECM. The FPCM also has Special Functions within the Tech 2 for controlling the Fuel Pump Duty Cycle and Fuel Rail Pressure.

TIP: The FPCM can sometimes be overlooked when diagnosing a problem involving the fuel system. If while using a scan tool (Tech2) a DTC P069E is detected, return to the Powertrain menu and select Fuel Pump Control Module for additional diagnostic information.

Checking the FPCM for DTCs could lead to more accurate diagnosis of a problem, faster determination of root cause, and shorter vehicle repair times.