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Engine-Codes – GMC – P1002 2017 GMC Sierra

P1002 2017 GMC Sierra Code - Fuel Pump Driver Control Module System Voltage Performance

Quick Answer

The P1002 diagnostic trouble code (DTC) for a 2017 GMC Sierra refers to an issue with the Fuel Pump Driver Control Module System Voltage Performance. Common causes include Faulty wiring or connections in the fuel pump driver control module system, Malfunctioning fuel pump driver control module, Issues with the powertrain control module (PCM). 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 2017 GMC Sierra indicates Fuel Pump Driver Control Module System Voltage Performance.
Common causes
Common causes include Faulty wiring or connections in the fuel pump driver control module system, Malfunctioning fuel pump driver control module, Issues with the powertrain control module (PCM).
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 17, 2024
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Code P1002 2017 GMC Sierra Description

The P1002 diagnostic trouble code (DTC) for a 2017 GMC Sierra refers to an issue with the Fuel Pump Driver Control Module System Voltage Performance. This code indicates that the powertrain control module (PCM) has detected a problem with the voltage levels in the fuel pump driver control module system. The fuel pump driver control module is responsible for controlling the fuel pump's operation, ensuring the correct amount of fuel is delivered to the engine for optimal performance.

OBDII Code P1002 2017 GMC Sierra - Fuel Pump Driver Control Module System Voltage Performance
P1002 2017 GMC Sierra Code - Fuel Pump Driver Control Module System Voltage Performance

Common Causes of P1002 2017 GMC Sierra

  1. Faulty wiring or connections in the fuel pump driver control module system.
  2. Malfunctioning fuel pump driver control module.
  3. Issues with the powertrain control module (PCM).
  4. Electrical problems such as a blown fuse or relay.
  5. Corrosion or damage to electrical components.

Symptoms of P1002 2017 GMC Sierra

  1. Engine misfires or hesitation during acceleration.
  2. Reduced fuel efficiency.
  3. Difficulty starting the engine.
  4. Engine stalling while driving.
  5. Illumination of the check engine light.

How to Fix P1002 2017 GMC Sierra

  1. Begin by conducting a thorough inspection of the fuel pump driver control module system, checking for any loose or damaged wiring or connections.
  2. Test the fuel pump driver control module and the PCM to determine if either component is malfunctioning.
  3. Replace any faulty components such as the fuel pump driver control module, PCM, or damaged wiring.
  4. Clear the DTC from the PCM's memory using a diagnostic scan tool.
  5. Test drive the vehicle to ensure the issue has been resolved and that the symptoms associated with the P1002 code are no longer present.

Cost to Fix P1002 2017 GMC Sierra

The typical repair costs for addressing a P1002 code on a 2017 GMC Sierra can vary depending on the specific cause of the issue. In general, the cost of parts such as a new fuel pump driver control module or PCM can range from $200 to $500. Labor costs at auto repair shops typically range from $80 to $150 per hour. The total repair cost, including parts and labor, could range from $300 to $800 or more. It is recommended to obtain quotes from local auto repair shops to get a more accurate estimate based on your location and the specific circumstances of your vehicle.

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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 P1002 2017 GMC Sierra Code

1. What does the OBDII code P1002 mean for a 2017 GMC Sierra?

P1002 indicates an issue with the Fuel Pump Driver Control Module (FPCM) system voltage, suggesting that the module is not operating within the expected voltage range.

2. What are the common symptoms of code P1002 in a 2017 GMC Sierra?

Symptoms may include difficulty starting the engine, poor acceleration, reduced fuel efficiency, or the Check Engine Light being illuminated.

3. What causes the P1002 code to appear in a 2017 GMC Sierra?

Possible causes include a faulty Fuel Pump Driver Control Module, damaged wiring or connectors, a failing fuel pump, or issues with the power supply or ground connections to the module.

4. Can a bad fuel pump cause the P1002 code?

Yes, a failing fuel pump can cause the Fuel Pump Driver Control Module to operate outside its voltage range, triggering code P1002.

5. How is the P1002 code diagnosed on a 2017 GMC Sierra?

A technician will use a scan tool to read the code, inspect the FPCM and its wiring for damage, test the voltage supply and ground connections, and verify the fuel pump’s functionality.

6. Can I drive my 2017 GMC Sierra with a P1002 code?

Driving with a P1002 code is not recommended, as it can cause performance issues and may lead to further damage to the fuel system components.

7. How do you fix the P1002 code on a 2017 GMC Sierra?

Repairs may include replacing the Fuel Pump Driver Control Module, repairing damaged wiring or connectors, fixing grounding issues, or replacing the fuel pump if it’s defective.

8. How much does it cost to fix the P1002 code on a 2017 GMC Sierra?

Repair costs can vary but typically range from $200 to $800, depending on whether the FPCM, fuel pump, or wiring needs repair or replacement.

9. Can a weak battery cause the P1002 code in a 2017 GMC Sierra?

Yes, a weak or failing battery can cause voltage fluctuations that may trigger the P1002 code.

10. How can I prevent the P1002 code from recurring in my 2017 GMC Sierra?

Regular maintenance, ensuring the battery is in good condition, inspecting wiring and connections, and addressing fuel system issues promptly can help prevent the code from recurring.

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