AutoCodes – GMC – P1002 GMC

P1002 GMC 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 GMC 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 2,378

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

What does this mean?

What are the Possible Causes of the DTC P1002 GMC?

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 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 P1002 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 P1002 GMC code?

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

Need Help with the Code?

Get the P1002 GMC code diagnosed by a professional: Find a repair shop in your area

Information for Specific GMC Models

P1002 2014 GMC Sierra — Fuel Pump Driver Control Module System Voltage Performance
P1002 2015 GMC Sierra — Fuel Pump Driver Control Module System Voltage Performance
P1002 2016 GMC Sierra — Fuel Pump Driver Control Module System Voltage Performance
P1002 2017 GMC Sierra — Fuel Pump Driver Control Module System Voltage Performance
P1002 2018 GMC Sierra — Fuel Pump Driver Control Module System Voltage 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 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.