AutoCodesGMC – P064A 2015 GMC Sierra

P064A 2015 GMC Sierra Code - Fuel Pump Control Module Performance

Quick Answer

The Engine Control Module (ECM) supplies voltage to the fuel pump control module when the ECM detects that the ignition is on. Common causes include Faulty Fuel Pump Control Module, Fuel Pump Control Module harness is open or shorted, Fuel Pump Control Module circuit poor electrical connection. Severity is High - diagnose this code as soon as possible. Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.

What it means
P064A 2015 GMC Sierra indicates Fuel Pump Control Module Performance.
Common causes
Common causes include Faulty Fuel Pump Control Module, Fuel Pump Control Module harness is open or shorted, Fuel Pump Control Module circuit poor electrical connection.
Severity
High - diagnose this code as soon as possible.
Can I drive?
Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.
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Code Popularity 207
How popular is this code, among other codes? Low
Table of contents Created and updated by William Orellana on Jul 17, 2022
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Code P064A 2015 GMC Sierra Description

The Engine Control Module (ECM) supplies voltage to the fuel pump control module when the ECM detects that the ignition is on. The voltage from the ECM to the fuel pump control module remains for 2 seconds unless the engine is cranked or run. While this voltage is being received, the fuel pump control module supplies a varying voltage to the fuel tank pump module in order to maintain the desired fuel pressure. The Diagnostic Trouble Code (DTC) will be set if the fuel pump control module detects an over-temperature fault.
OBDII Code P064A 2015 GMC Sierra - Fuel Pump Control Module Performance - AutoCodes.com
P064A 2015 GMC Sierra Code - Fuel Pump Control Module Performance

What are the Possible Causes of the DTC P064A 2015 GMC Sierra?

  • Faulty Fuel Pump Control Module
  • Fuel Pump Control Module harness is open or shorted
  • Fuel Pump Control Module circuit poor electrical connection

How to Fix the DTC P064A 2015 GMC Sierra?

Review the 'Possible Causes' above and visually examine the corresponding wiring harness and connectors. Check for damaged components and inspect connector pins for signs of being broken, bent, pushed out, or corroded.

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the P064A 2015 GMC Sierra code, it typically requires 1.0 hour of labor. Rates vary by location, vehicle, and shop. Many shops charge between $80–$150 per hour; dealerships and metro areas may be higher, independents may be lower.

Need more information about the P064A 2015 GMC Sierra code?

Need more information on how to fix the P064A 2015 GMC Sierra code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the P064A 2015 GMC Sierra code diagnosed by a professional: Find a repair shop in your area

About the author: William Orellana is a Master Mechanic and Mechanical Engineer with over 30 years of experience diagnosing and repairing vehicles. Learn more about his background.

Frequently Asked Questions about P064A 2015 GMC Sierra Code

1. What does the OBDII code P064A mean on a 2015 GMC Sierra?

P064A indicates a performance issue with the Fuel Pump Control Module (FPCM), suggesting it may not be operating as expected or communicating properly with the vehicle's systems.

2. What are common symptoms of code P064A on a 2015 GMC Sierra?

Common symptoms include difficulty starting the engine, poor fuel efficiency, reduced engine performance, stalling, and an illuminated check engine light.

3. What causes the P064A code to appear on a 2015 GMC Sierra?

Potential causes include a faulty fuel pump control module, damaged wiring or connectors in the FPCM circuit, or issues with the vehicle's powertrain control module (PCM).

4. How is the P064A code diagnosed?

A technician will use a scan tool to check for additional codes, inspect wiring and connectors, test the FPCM for proper voltage and ground, and verify communication between the FPCM and PCM.

5. Can I drive my 2015 GMC Sierra with code P064A?

Driving with this code is not recommended, as it can lead to reduced engine performance or stalling, which may pose safety risks.

6. How can I fix the P064A code on a 2015 GMC Sierra?

Repairs may include replacing the fuel pump control module, repairing damaged wiring, or updating/reprogramming the PCM if necessary.

7. How much does it cost to repair a P064A code on a 2015 GMC Sierra?

Repair costs can vary but typically range from $200 to $600, depending on whether the FPCM needs replacement or if wiring repairs are required.

8. Can a weak battery cause the P064A code on a 2015 GMC Sierra?

Yes, a weak or failing battery can cause voltage issues that may trigger the P064A code, so it’s important to test the battery and charging system.

9. Is the fuel pump itself responsible for the P064A code?

While the fuel pump may not directly cause this code, issues with the fuel pump can sometimes affect the performance of the control module, so both should be inspected.

10. Do I need to reprogram the FPCM after replacing it on a 2015 GMC Sierra?

Yes, in many cases, the new fuel pump control module will need to be programmed to communicate correctly with the vehicle's PCM.

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