P0627 Gmc Code - Fuel Pump Speed Output Circuit
Quick Answer
The Engine Control Module (ECM) supplies voltage to the fuel pump driver control module for 30 s when the ignition is on and continuously when the engine is running. 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
- P0627 Gmc indicates Fuel Pump Speed Output Circuit.
- 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.
Code P0627 Gmc Description
What are the Possible Causes of the DTC P0627 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
- Faulty Engine Control Module (ECM)
How to Fix the DTC P0627 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 P0627 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 P0627 Gmc code?
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Information for Specific GMC Models
- P0627 2014 GMC Sierra — Fuel Pump Speed Output Circuit
- P0627 2015 GMC Sierra — Fuel Pump Speed Output Circuit
- P0627 2016 GMC Sierra — Fuel Pump Speed Output Circuit
- P0627 2017 GMC Sierra — Fuel Pump Speed Output Circuit
- P0627 2018 GMC Sierra — Fuel Pump Speed Output Circuit
Frequently Asked Questions about P0627 Gmc Code
1. What does the OBDII code P0627 mean on a GMC vehicle?
P0627 indicates an issue with the Fuel Pump Speed Output Circuit, which monitors and controls the fuel pump's speed to ensure proper fuel delivery.
2. What are the common symptoms of the P0627 code on a GMC?
Symptoms include difficulty starting the engine, poor engine performance, stalling, and in some cases, the vehicle may not start at all.
3. What causes the P0627 code to appear on a GMC?
Common causes include a faulty fuel pump, damaged wiring or connectors in the fuel pump circuit, a failing fuel pump control module, or a malfunctioning PCM (Powertrain Control Module).
4. Can I drive my GMC with the P0627 code active?
Driving with the P0627 code is not recommended, as it may lead to further engine performance issues or a complete inability to start the vehicle.
5. How do I diagnose the P0627 code on my GMC?
Diagnosis involves checking the fuel pump circuit for damaged wiring or poor connections, testing the fuel pump control module, and verifying the functionality of the fuel pump.
6. How is the P0627 code typically fixed on a GMC?
Repairs may include replacing the fuel pump, repairing or replacing damaged wiring or connectors, replacing the fuel pump control module, or reprogramming the PCM if necessary.
7. Does the P0627 code mean the fuel pump is always bad?
No, the P0627 code doesn’t always mean the fuel pump is faulty. It could also be caused by wiring issues, a bad control module, or a PCM problem.
8. How much does it cost to fix the P0627 code on a GMC?
Repair costs can vary, with fuel pump replacement ranging from $400 to $800, while wiring or control module repairs may be less expensive. Diagnosis fees may also apply.
9. Can a weak battery cause the P0627 code on a GMC?
Yes, a weak or failing battery can affect the voltage supply to the fuel pump circuit, potentially triggering the P0627 code.
10. Will clearing the P0627 code with a scanner fix the issue?
Clearing the code may temporarily reset the check engine light, but the underlying issue must be repaired to prevent the code from returning.
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