P1002 2014 GMC Sierra Code - Fuel Pump Driver Control Module System Voltage Performance
Quick Answer
The P1002 diagnostic trouble code for a 2014 GMC Sierra indicates an issue with the Fuel Pump Driver Control Module System Voltage Performance. Common causes include Faulty wiring or connectors in the fuel pump driver control module circuit, Malfunctioning fuel pump driver control module, Weak battery. 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 2014 GMC Sierra indicates Fuel Pump Driver Control Module System Voltage Performance.
- Common causes
- Common causes include Faulty wiring or connectors in the fuel pump driver control module circuit, Malfunctioning fuel pump driver control module, Weak battery.
- 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 P1002 2014 GMC Sierra Description
The P1002 diagnostic trouble code for a 2014 GMC Sierra indicates an issue with the Fuel Pump Driver Control Module System Voltage Performance. This code is triggered when the powertrain control module (PCM) detects that the voltage levels in the fuel pump driver control module are outside the expected range. The fuel pump driver control module is responsible for controlling the fuel pump's operation, ensuring it delivers the correct amount of fuel to the engine at all times.
Common Causes of P1002 2014 GMC Sierra
- Faulty wiring or connectors in the fuel pump driver control module circuit
- Malfunctioning fuel pump driver control module
- Weak battery
- Issues with the powertrain control module
Symptoms of P1002 2014 GMC Sierra
- Engine misfires
- Rough idling
- Stalling
- Hesitation during acceleration
- Difficulty starting or failure to start
How to Fix P1002 2014 GMC Sierra
- Begin by conducting a thorough inspection of the wiring and connectors in the fuel pump driver control module circuit to check for any damage or corrosion.
- Test the fuel pump driver control module to determine if it is functioning properly. If it is found to be faulty, it will need to be replaced.
- Check the battery voltage to ensure it is within the correct range. A weak battery can affect the voltage levels in the fuel pump driver control module.
- If no issues are found with the wiring, connectors, fuel pump driver control module, or battery, further diagnostics may be needed to identify any potential issues with the powertrain control module.
Cost to Fix P1002 2014 GMC Sierra
The typical repair costs for addressing a P1002 code on a 2014 GMC Sierra can vary depending on the specific cause of the issue. In general, replacing a faulty fuel pump driver control module can cost between $200 and $500, including parts and labor. However, additional diagnostic time may be needed to pinpoint the exact cause of the problem, which can increase the overall repair costs.
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Frequently Asked Questions about P1002 2014 GMC Sierra Code
1. What does the OBDII code P1002 mean on a 2014 GMC Sierra?
P1002 indicates a problem with the Fuel Pump Driver Control Module (FPCM) system voltage performance, suggesting an issue with the module's operation or the electrical circuit.
2. What are the common symptoms of P1002 on a 2014 GMC Sierra?
Symptoms may include difficulty starting the engine, reduced fuel efficiency, stalling, or the engine running rough.
3. What causes the P1002 code to be triggered?
Common causes include a faulty Fuel Pump Driver Control Module, wiring or connector issues, a failing fuel pump, or a weak battery causing voltage fluctuations.
4. Can a weak battery cause the P1002 code?
Yes, a weak or failing battery can cause voltage irregularities that may trigger the P1002 code.
5. How do I diagnose the P1002 code on my 2014 GMC Sierra?
Start by inspecting the wiring and connectors to the FPCM for damage or corrosion, test the battery and charging system, and use a scan tool to monitor fuel system voltage.
6. Is it safe to drive with the P1002 code?
Driving may be possible but not recommended, as the issue could lead to poor engine performance or stalling, potentially causing unsafe driving conditions.
7. How do I fix the P1002 code on a 2014 GMC Sierra?
Repairs may include replacing the Fuel Pump Driver Control Module, repairing damaged wiring, cleaning corroded connectors, or addressing battery and alternator issues.
8. Does the fuel pump itself need to be replaced for a P1002 code?
Not necessarily. The issue may be with the control module or wiring rather than the fuel pump itself, but testing the fuel pump is part of the diagnostic process.
9. How much does it cost to repair the P1002 code?
Repair costs vary depending on the specific issue. Replacing the Fuel Pump Driver Control Module could cost $200–$500, while wiring repairs or battery replacement may be less.
10. Can a software update fix the P1002 code on a 2014 GMC Sierra?
In some cases, a software update from the manufacturer may address module communication or voltage performance issues, but this depends on the specific circumstances.
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