AutoCodes – GMC – P064A GMC

P064A GMC 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 GMC 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 1,643

How popular is this code, among other codes? Low

Repair Importance Level

Urgent (Diagnose now) (3 / 3)

Repair Difficulty Level

Advanced (Pro) (3 / 3)

What is this?

Table of contents Created and updated by William Orellana on Jul 17, 2022

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code P064A GMC 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.
(Actual Fuel Pump Control Module looks may be different)

OBDII Code P064A GMC - Fuel Pump Control Module Performance - AutoCodes.com — P064A GMC Code - Fuel Pump Control Module Performance

What does this mean?

What are the Possible Causes of the DTC P064A GMC?

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 GMC?

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 GMC 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 GMC code?

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

Need Help with the Code?

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

Information for Specific GMC Models

P064A 2014 GMC Sierra — Fuel Pump Control Module Performance
P064A 2015 GMC Sierra — Fuel Pump Control Module Performance
P064A 2016 GMC Sierra — Fuel Pump Control Module Performance
P064A 2017 GMC Sierra — Fuel Pump Control Module Performance
P064A 2018 GMC Sierra — Fuel Pump Control Module Performance

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 GMC Code

1. What are the common symptoms of OBDII code P064A GMC (Fuel Pump Control Module Performance)?

- Common symptoms of this code may include engine stalling, poor fuel economy, rough idling, and difficulty starting the vehicle.

2. What are the possible causes of OBDII code P064A GMC?

- The code P064A GMC can be triggered by issues such as a faulty fuel pump control module, wiring problems, or a malfunctioning fuel pump.

3. How serious is OBDII code P064A GMC?

- This code should be addressed promptly as it can lead to drivability issues and potential fuel pump failure if left unresolved.

4. Can I still drive my vehicle with OBDII code P064A GMC?

- It is not recommended to drive your vehicle with this code present, as it may lead to further damage and safety risks.

5. How is OBDII code P064A GMC diagnosed?

- Diagnosis of this code typically involves using a scan tool to retrieve the code, checking the fuel pump control module and related components for faults, and conducting further testing if needed.

6. How can I repair OBDII code P064A GMC?

- Repairing this code may involve replacing the fuel pump control module, repairing any damaged wiring, or addressing issues with the fuel pump itself.

7. Can a DIY enthusiast fix OBDII code P064A GMC?

- While some experienced DIY enthusiasts may be able to address this code, it is recommended to consult a professional mechanic for proper diagnosis and repair.

8. How much does it cost to repair OBDII code P064A GMC?

- The cost of repairing this code can vary depending on the extent of the issue, parts needed, and labor costs. It's advisable to obtain quotes from different repair shops.

9. Are there any preventive measures to avoid OBDII code P064A GMC in the future?

- Regular maintenance and inspections of the fuel pump system, including checking the fuel pump control module and wiring, can help prevent issues that may trigger this code.

10. Can resetting the OBDII system clear OBDII code P064A GMC?

- While resetting the OBDII system may temporarily clear the code, it is crucial to address the underlying issue causing the code to prevent it from reoccurring.