Replacing The Fuel Pump Control Module In A '09 Tahoe

If you're experiencing issues with your 2009 Tahoe's fuel pump control module, you may need to replace it. Before doing so, it's important to diagnose the problem accurately. Some common signs of a faulty fuel pump control module include difficulty starting the vehicle, error codes related to fuel pump control, and illumination of the malfunction indicator lamp (MIL). To replace the fuel pump control module, you'll need to locate it, which is usually near the spare tire under the vehicle. Replacing the module may require special tools and programming, so it's recommended to seek assistance from a qualified mechanic or refer to a repair manual specific to your vehicle.

Fuel pump control module programming

To replace the fuel pump control module in a 2009 Tahoe, you will first need to purchase a replacement module. Once you have the new module, you can follow these steps:

• Locate the fuel pump control module: In a 2009 Tahoe, it is typically located in front of the spare tire under the vehicle near the rear bumper.
• Disconnect the old module: Before disconnecting the old module, make sure to note the wiring and connections for proper installation of the new module.
• Install the new module: Connect the new fuel pump control module, ensuring that all connections are secure.
• Program the new module: Use a TECH2 with the latest software to program the new module. This step is crucial and must be performed according to the service procedure or a General Motors Corporation service bulletin. The programming will ensure that the module functions correctly and communicates effectively with other vehicle systems.
• Clear any diagnostic trouble codes (DTCs): After programming, clear any DTCs that may have been set during the process.
• Test the vehicle: Start the engine and check for proper fuel pump operation and any error codes.

It is important to note that stable battery voltage is critical during the programming process. Any fluctuation or loss of voltage can interrupt the programming. Therefore, it is recommended to use an external power source, such as a Midtronic PCS charger or a fully charged 12V jumper or booster pack, to maintain stable voltage.

Additionally, before programming the module, ensure that certain conditions are met, such as addressing any charging system concerns, verifying battery voltage, and disabling any systems that may put a load on the vehicle's battery.

Fuel pump replacement

To replace the fuel pump control module on a 2009 Tahoe, you will first need to purchase a replacement module. It is recommended to buy a Bosch, AC Delco, or Delphi module. You can try to find the best price online or at local stores.

Once you have the new module, locate the old fuel pump control module, which is found right in front of the spare tire under the vehicle near the rear bumper. Disconnect the old module and set it aside, ensuring all tool connections are secure. Then, install the new fuel pump control module, following the manufacturer's instructions.

After installation, the new module will need to be programmed. This can be done using a TECH2 with the latest software, following the steps in the service manual. It is important to ensure that the Tech 2 and the TIS terminal are both equipped with the latest software before performing the service programming.

Additionally, some modules may require additional programming or setup events before or after the initial programming. It is also recommended to use an external power source, such as a Midtronic PCS charger or a fully charged 12V jumper or booster pack, to maintain stable battery voltage during programming.

Finally, clear any Diagnostic Trouble Codes (DTCs) that may have been set during the programming process.

Fuel pump control module replacement

To replace the fuel pump control module of a 2009 Tahoe, you will need to first purchase a replacement part. It is recommended to buy a Bosch, AC Delco, or Delphi pump. You can find these online or at local automotive stores.

Once you have the new part, locate the fuel pump control module, which is situated right in front of the spare tire under the vehicle near the rear bumper. Before starting work, ensure you have the correct tools and safety equipment, including eye protection and gloves. Place the vehicle on jack stands and never work underneath a vehicle supported only by a jack.

Now, carefully disconnect the wiring and connectors from the old fuel pump control module, taking note of their positions for reinstallation. Remove the old module and set it aside, being careful not to damage any surrounding components.

Next, install the new fuel pump control module, ensuring it is securely connected and fastened in place. Reconnect the wiring and connectors, referring to your notes or a repair manual for correct positioning.

Finally, you will need to program the new module. This requires the use of a TECH2 with the latest software to perform the programming. Follow the steps provided by the manufacturer or a repair manual for your specific vehicle.

After programming, clear any Diagnostic Trouble Codes (DTCs) that may have been set during the process. Ensure that you meet all the conditions specified by the manufacturer before programming, such as battery voltage levels and the disconnection of specific systems.

Fuel pump control module faults

The Fuel Pump Control Module (FPCM) is located in front of the spare tire, underneath the vehicle, near the rear bumper. Faults in the FPCM can be caused by damage to the electrical circuits due to its position, which leaves it vulnerable to road debris and other contaminants. Overheating and road vibrations can also cause the unit to fail.

Some symptoms of a faulty FPCM include:

• Engine misfires and stalling
• A damaged fuel filter
• Engine surges
• Poor engine performance
• Intermittent engine performance
• Hesitant acceleration

If you are experiencing any of these issues, it is best to consult a mechanic to diagnose the problem.

Fuel pump module faults

The fuel pump control module (FPCM) is an important component of the fuel system, and faults with it can cause significant issues with your vehicle. Some common symptoms of a faulty FPCM include:

• Difficulty starting the engine: The engine may crank but not start, or it may take multiple attempts to get it running.
• Check engine light: The "check engine" light coming on can indicate a problem with the FPCM.
• Fault codes: Specific fault codes such as P0641, P069E, and P06A6 may be triggered and stored in the FPCM, indicating issues with the module or related components.
• Backfiring and hesitation: A faulty FPCM can cause the vehicle to backfire and hesitate under 1000 rpm before shutting off.

If you suspect that your FPCM is faulty, it is important to have it diagnosed and replaced by a qualified mechanic. In some cases, the FPCM may be covered under warranty, so it is worth checking with your dealership. Additionally, programming or resetting the FPCM may be required after replacement, so ensure you have the necessary tools or information to complete this step.

Frequently asked questions