AutoCodes – GMC – P1002 2018 GMC Sierra

P1002 2018 GMC Sierra Code - Fuel Pump Driver Control Module System Voltage Performance

Quick Answer

The vehicle control modules or sensors monitor the system voltage to verify the system voltage is within the normal operating range. Common causes include Faulty Fuel Pump Driver Control Module, Fuel Pump Driver Control Module harness is open or shorted, Fuel Pump Driver 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: P1002 2018 GMC Sierra indicates Fuel Pump Driver Control Module System Voltage Performance.
Common causes: Common causes include Faulty Fuel Pump Driver Control Module, Fuel Pump Driver Control Module harness is open or shorted, Fuel Pump Driver 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 332

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 04, 2022

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code P1002 2018 GMC Sierra Description

The vehicle control modules or sensors monitor the system voltage to verify the system voltage is within the normal operating range. The Diagnostic Trouble Code (DTC) will be set when the Fuel Pump Driver Control Module detects a system voltage below or above a threshold.

OBDII Code P1002 2018 GMC Sierra - Fuel Pump Driver Control Module System Voltage Performance - AutoCodes.com — P1002 2018 GMC Sierra Code - Fuel Pump Driver Control Module System Voltage Performance

What does this mean?

What are the Possible Causes of the DTC P1002 2018 GMC Sierra?

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

How to Fix the DTC P1002 2018 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 P1002 2018 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 P1002 2018 GMC Sierra code?

Need more information on how to fix the P1002 2018 GMC Sierra code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the P1002 2018 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 P1002 2018 GMC Sierra Code

1. What are common symptoms of OBDII code P1002 in a 2018 GMC Sierra?

- Common symptoms include engine stalling, poor engine performance, and difficulty starting the vehicle.

2. What does the OBDII code P1002 indicate in a 2018 GMC Sierra?

- OBDII code P1002 refers to "Fuel Pump Driver Control Module System Voltage Performance" in the vehicle.

3. What are possible causes of OBDII code P1002 in a 2018 GMC Sierra?

- Possible causes include a faulty fuel pump driver control module, issues with the fuel pump, wiring problems, or a weak vehicle battery.

4. How can I diagnose the OBDII code P1002 in my 2018 GMC Sierra?

- Diagnosis typically involves using a scan tool to retrieve the code, checking the fuel pump driver control module, inspecting the wiring, and testing the fuel pump's operation.

5. Can I still drive my 2018 GMC Sierra with OBDII code P1002?

- It's not recommended to drive the vehicle with this code as it can lead to engine performance issues and potential safety concerns.

6. How can I repair OBDII code P1002 in my 2018 GMC Sierra?

- Repair options may include replacing the fuel pump driver control module, repairing or replacing damaged wiring, checking the fuel pump operation, and ensuring a strong battery connection.

7. Is it possible to reset OBDII code P1002 in a 2018 GMC Sierra without making repairs?

- While you can clear the code temporarily, it's important to address the underlying issue to prevent further problems.

8. Can a DIY enthusiast fix OBDII code P1002 in a 2018 GMC Sierra?

- Depending on your mechanical skills and tools available, some DIY enthusiasts may be able to address the issue themselves. However, it's recommended to consult a professional for complex repairs.

9. Will OBDII code P1002 cause damage to other vehicle components if left unresolved in a 2018 GMC Sierra?

- Ignoring OBDII code P1002 can potentially lead to fuel pump or electrical system damage, affecting other vehicle components over time.

10. How much does it typically cost to repair OBDII code P1002 in a 2018 GMC Sierra?

- The cost of repairing OBDII code P1002 can vary depending on the underlying issue, parts needed, and labor costs. It's advisable to get a diagnostic from a trusted mechanic for an accurate estimate.