AutoCodesGMC – P064A 2017 GMC Sierra

P064A 2017 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 2017 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 224
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 2017 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 2017 GMC Sierra - Fuel Pump Control Module Performance - AutoCodes.com
P064A 2017 GMC Sierra Code - Fuel Pump Control Module Performance

What are the Possible Causes of the DTC P064A 2017 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 2017 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 2017 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 2017 GMC Sierra code?

Need more information on how to fix the P064A 2017 GMC Sierra code? Get Access to Factory Service Manuals

Need Help with the Code?

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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 2017 GMC Sierra Code

1. What does the OBDII code P064A mean on a 2017 GMC Sierra?

P064A indicates a performance issue with the Fuel Pump Control Module (FPCM), which manages the fuel pump's operation to supply the correct fuel pressure.

2. What are the common symptoms of a P064A code in a 2017 GMC Sierra?

Symptoms include difficulty starting the vehicle, poor fuel economy, engine misfires, rough idling, or the engine stalling unexpectedly.

3. What causes the P064A code to appear in a 2017 GMC Sierra?

Common causes include a faulty Fuel Pump Control Module, poor electrical connections, wiring issues, or a failed fuel pump.

4. Can I drive my 2017 GMC Sierra with a P064A code?

Driving with a P064A code is not recommended, as it can lead to inconsistent fuel delivery, poor performance, and potential engine damage.

5. How do I diagnose the P064A code on my GMC Sierra?

Start by checking the FPCM and its wiring for damage or corrosion, inspect the fuel pump, and use a scan tool to monitor FPCM data for irregularities.

6. How is the P064A code repaired on a 2017 GMC Sierra?

Repairs may involve replacing the Fuel Pump Control Module, repairing or replacing damaged wiring, cleaning corroded connectors, or, in rare cases, replacing the fuel pump.

7. How much does it cost to fix a P064A code on a 2017 GMC Sierra?

The repair cost varies, but replacing the Fuel Pump Control Module typically ranges from $300 to $700, including parts and labor.

8. Can a software update fix the P064A code on a 2017 GMC Sierra?

In some cases, a software update for the FPCM may resolve the issue if the problem is related to outdated programming.

9. What tools do I need to troubleshoot a P064A code on my GMC Sierra?

You’ll need an OBDII scan tool, a multimeter for testing electrical connections, and potentially a wiring diagram for the fuel system.

10. Can a weak battery cause the P064A code on a 2017 GMC Sierra?

Yes, a weak or failing battery can cause voltage irregularities, which may trigger the P064A code in the Fuel Pump Control Module.

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