AutoCodes – GMC – P1002 2016 GMC Sierra

P1002 2016 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 2016 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 192

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 2016 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 2016 GMC Sierra - Fuel Pump Driver Control Module System Voltage Performance - AutoCodes.com — P1002 2016 GMC Sierra Code - Fuel Pump Driver Control Module System Voltage Performance

What does this mean?

What are the Possible Causes of the DTC P1002 2016 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 2016 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 2016 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 2016 GMC Sierra code?

Need more information on how to fix the P1002 2016 GMC Sierra code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the P1002 2016 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 2016 GMC Sierra Code

1. What does the OBDII code P1002 mean on a 2016 GMC Sierra?

P1002 indicates a problem with the Fuel Pump Driver Control Module (FPCM) system voltage performance, suggesting an issue with voltage levels or communication between the module and other components.

2. What are the common symptoms of code P1002 in a 2016 GMC Sierra?

Common symptoms include difficulty starting the engine, reduced fuel efficiency, engine hesitation, stalling, or a Check Engine Light illuminated on the dashboard.

3. What causes the P1002 code to appear on a 2016 GMC Sierra?

Possible causes include a faulty Fuel Pump Driver Control Module, wiring issues such as shorts or damaged connectors, a failing fuel pump, or issues with the vehicle's power supply to the module.

4. Can driving with code P1002 damage my 2016 GMC Sierra?

Driving with this code can lead to engine performance issues and potential damage to the fuel system if left unresolved, so itâ€™s best to address it as soon as possible.

5. How do you diagnose the P1002 code on a 2016 GMC Sierra?

Diagnosis typically involves scanning for additional codes, inspecting the wiring and connectors to the FPCM, testing the fuel pump, and checking the voltage at the module.

6. How do you fix the P1002 code on a 2016 GMC Sierra?

Repairs may involve replacing the Fuel Pump Driver Control Module, repairing or replacing damaged wiring or connectors, or addressing power supply issues.

7. Can a weak battery trigger the P1002 code on a 2016 GMC Sierra?

Yes, a weak or failing battery can cause low voltage issues, which may trigger the P1002 code in the Fuel Pump Driver Control Module system.

8. Is the fuel pump itself likely to be the cause of the P1002 code?

While it's less common, a failing fuel pump can cause voltage inconsistencies in the system, contributing to the P1002 code.

9. Does the P1002 code require reprogramming the fuel pump driver control module?

In some cases, reprogramming or updating the module's software may be necessary if itâ€™s determined to be a software-related issue.

10. How much does it cost to repair the P1002 code on a 2016 GMC Sierra?

Repair costs vary but typically range from $150 to $500 depending on whether the issue is with wiring, the Fuel Pump Driver Control Module, or the fuel pump itself.