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Engine-Codes – GMC – P1002 GMC

P1002 GMC Code - Fuel Pump Driver Control Module System Voltage Performance

Quick Answer

The P1002 GMC code indicates an issue with the Fuel Pump Driver Control Module (FPDM) system voltage performance. Common causes include Faulty wiring in the FPDM system, Malfunctioning FPDM, Issues with the fuel pump relay. 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
P1002 GMC indicates Fuel Pump Driver Control Module System Voltage Performance.
Common causes
Common causes include Faulty wiring in the FPDM system, Malfunctioning FPDM, Issues with the fuel pump relay.
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.
What is this?
Table of contents Created and updated by William Orellana on Sep 07, 2024
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Code P1002 GMC Description

The P1002 GMC code indicates an issue with the Fuel Pump Driver Control Module (FPDM) system voltage performance. The FPDM is a crucial component that controls the fuel pump operation in modern vehicles. This code suggests that the voltage levels in the FPDM system are outside of the expected range, which can lead to various performance issues in the vehicle.

OBDII Code P1002 GMC - Fuel Pump Driver Control Module System Voltage Performance
P1002 GMC Code - Fuel Pump Driver Control Module System Voltage Performance

Common Causes of P1002 GMC

  1. Faulty wiring in the FPDM system
  2. Malfunctioning FPDM
  3. Issues with the fuel pump relay
  4. Electrical system problems

Symptoms of P1002 GMC

  1. Check engine light illuminated
  2. Engine stalling or hesitation
  3. Reduced fuel efficiency
  4. Engine misfires
  5. Difficulty starting the vehicle

How to Fix P1002 GMC

  1. Perform a thorough diagnostic scan to confirm the P1002 GMC code and identify the specific cause of the issue.
  2. Inspect the wiring in the FPDM system for any signs of damage or corrosion and repair or replace as needed.
  3. Test the FPDM and fuel pump relay to ensure they are functioning correctly; replace any faulty components.
  4. Check the vehicle's electrical system for any issues that may be affecting the FPDM system voltage.
  5. Clear the diagnostic trouble codes and test drive the vehicle to confirm that the issue has been resolved.

Cost to Fix P1002 GMC

The typical repair costs for addressing the P1002 GMC code can vary depending on the specific cause of the issue and the labor rates at the auto repair shop. On average, repairing the FPDM system voltage performance issue may cost between $200 and $500, including parts and labor. However, it's essential to consider that diagnosis time and labor rates can vary based on location, vehicle make and model, and engine type. It's recommended to consult with a certified mechanic for a more accurate estimate based on your vehicle's specific needs.

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Information for Specific GMC Models

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 P1002 GMC Code

1. What are the common symptoms of OBDII code P1002 GMC (Fuel Pump Driver Control Module System Voltage Performance)?

- Common symptoms include engine stalling, rough idling, decreased fuel efficiency, and difficulty starting the vehicle.

2. What are the possible causes of OBDII code P1002 GMC?

- Possible causes can include a faulty fuel pump driver module, corroded wiring connections, a weak battery, or a malfunctioning fuel pump.

3. How can I diagnose the issue related to OBDII code P1002 GMC?

- Diagnose the issue by checking the fuel pump driver module for proper operation, inspecting wiring for damage or corrosion, and testing the battery voltage.

4. Can a DIYer repair OBDII code P1002 GMC at home?

- Repairing OBDII code P1002 GMC may require advanced diagnostic equipment and knowledge, so it is recommended to consult a professional mechanic for accurate diagnosis and repair.

5. How much does it typically cost to fix OBDII code P1002 GMC?

- The cost of fixing OBDII code P1002 GMC can vary depending on the exact cause of the issue, but it may range from $200 to $600 for parts and labor.

6. Is it safe to continue driving with OBDII code P1002 GMC?

- It is not recommended to continue driving with OBDII code P1002 GMC, as it can lead to further damage to the fuel system and potentially leave you stranded on the road.

7. Can a bad fuel pump driver module cause OBDII code P1002 GMC?

- Yes, a faulty fuel pump driver module is a common culprit for triggering OBDII code P1002 GMC due to its crucial role in regulating fuel pump operation.

8. What are some tips for preventing OBDII code P1002 GMC from reoccurring?

- Regularly maintaining your vehicle, keeping the fuel system clean, and addressing any electrical issues promptly can help prevent OBDII code P1002 GMC from reoccurring.

9. How long does it take to repair OBDII code P1002 GMC?

- The repair time for OBDII code P1002 GMC can vary depending on the exact cause of the issue and the availability of parts, but it may take a few hours to a full day for completion.

10. Can a weak battery trigger OBDII code P1002 GMC?

- Yes, a weak battery can cause voltage fluctuations that may trigger OBDII code P1002 GMC related to the fuel pump driver control module system voltage performance.

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