P0627 2018 GMC Sierra Code - Fuel Pump Speed Output Circuit
Quick Answer
The P0627 diagnostic trouble code (DTC) in a 2018 GMC Sierra indicates an issue with the fuel pump speed output circuit. Common causes include Faulty fuel pump, Wiring issues in the fuel pump speed circuit, Defective fuel pump relay. 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 2018 GMC Sierra indicates Fuel Pump Speed Output Circuit.
- Common causes
- Common causes include Faulty fuel pump, Wiring issues in the fuel pump speed circuit, Defective fuel pump relay.
- 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.
Fix Your Car Smarter
Try the New AutoCodes App!
Get complete OBDII diagnostics, repair solutions, and cost estimates, plus AI chat support on demand.
Code P0627 2018 GMC Sierra Description
The P0627 diagnostic trouble code (DTC) in a 2018 GMC Sierra indicates an issue with the fuel pump speed output circuit. This code is triggered when the powertrain control module (PCM) detects a problem with the fuel pump speed signal. The fuel pump speed signal is crucial for regulating the fuel pump's operation and ensuring the correct fuel pressure is maintained in the fuel system.
Common Causes of P0627 2018 GMC Sierra
- Faulty fuel pump
- Wiring issues in the fuel pump speed circuit
- Defective fuel pump relay
- PCM malfunction
- Poor electrical connection in the circuit
Symptoms of P0627 2018 GMC Sierra
- Hard starting or extended cranking before the engine starts
- Engine stalling or hesitation during acceleration
- Rough idling or misfires
- Engine not starting at all
- Check Engine Light illuminated on the dashboard
How to Fix P0627 2018 GMC Sierra
- Begin by conducting a visual inspection of the fuel pump wiring and connections to check for any visible damage or corrosion.
- Test the fuel pump speed signal using a multimeter to determine if the signal is within the specified range.
- Inspect the fuel pump relay for proper operation and replace if necessary.
- If the fuel pump is found to be faulty, replace it with a new unit.
- Clear the DTC and perform a test drive to ensure the issue has been resolved.
Cost to Fix P0627 2018 GMC Sierra
The typical repair costs for addressing a P0627 code in a 2018 GMC Sierra can range from $200 to $600, including parts and labor. However, it is important to note that specific diagnosis time and labor rates at auto repair shops can vary based on factors such as location, vehicle make and model, and engine type. Auto repair shops commonly charge between $80 and $150 per hour for labor, but rates may be higher in metropolitan areas or at dealerships, while independent shops often charge less. For a more accurate estimate, it is recommended to check local rates.
Need more information about the P0627 2018 GMC Sierra code?
Need more information on how to fix the P0627 2018 GMC Sierra code? Get Access to Factory Service Manuals
Need Help with the Code?
Get the P0627 2018 GMC Sierra code diagnosed by a professional: Find a repair shop in your area
Frequently Asked Questions about P0627 2018 GMC Sierra Code
No Frequently Asked Questions about P0627 2018 GMC Sierra Code found.
Discuss the causes and fixes for P0627 2018 GMC Sierra OBDII Code
Code P0627 2018 GMC Sierra comments
No comments found for this page.
Fix Your Car Smarter
Try the New AutoCodes App!
Get complete OBDII diagnostics, repair solutions, and cost estimates, plus AI chat support on demand.