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P1469 2020 GMC Sierra Code - EVAP Purge Pump Speed Too Low

Quick Answer

The P1469 code on a 2020 GMC Sierra indicates that the EVAP (Evaporative Emission Control System) purge pump speed is too low. Common causes include Faulty EVAP purge pump, Clogged EVAP canister, Leak in the EVAP system. 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
P1469 2020 GMC Sierra indicates EVAP Purge Pump Speed Too Low.
Common causes
Common causes include Faulty EVAP purge pump, Clogged EVAP canister, Leak in the EVAP system.
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.
What is this?
Table of contents Created and updated by William Orellana on Sep 13, 2024
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Code P1469 2020 GMC Sierra Description

The P1469 code on a 2020 GMC Sierra indicates that the EVAP (Evaporative Emission Control System) purge pump speed is too low. The EVAP system is responsible for capturing and storing fuel vapors to prevent them from escaping into the atmosphere. The purge pump is a key component of this system, as it helps to control the flow of fuel vapors from the charcoal canister to the engine for combustion.

OBDII Code P1469 2020 GMC Sierra - EVAP Purge Pump Speed Too Low
P1469 2020 GMC Sierra Code - EVAP Purge Pump Speed Too Low

Common Causes of P1469 2020 GMC Sierra

  1. Faulty EVAP purge pump
  2. Clogged EVAP canister
  3. Leak in the EVAP system
  4. Electrical issues with the purge pump
  5. Wiring problems

Symptoms of P1469 2020 GMC Sierra

  1. Check Engine Light is illuminated
  2. Decreased fuel efficiency
  3. Rough idling or stalling
  4. Strong fuel odor
  5. Failed emissions test

How to Fix P1469 2020 GMC Sierra

  1. Diagnose the issue using a scan tool to confirm the P1469 code and identify the specific cause of the problem.
  2. Inspect the EVAP purge pump, canister, and system for any visible signs of damage or leaks.
  3. Test the electrical connections and wiring related to the purge pump for proper function.
  4. Replace the faulty purge pump, clean or replace the clogged canister, repair any leaks in the EVAP system, or fix any electrical issues as needed.
  5. Clear the code and test drive the vehicle to ensure that the issue has been resolved.

Cost to Fix P1469 2020 GMC Sierra

The typical repair costs for addressing a P1469 code on a 2020 GMC Sierra can vary depending on the specific cause of the issue. In general, replacing a faulty EVAP purge pump can cost between $150 and $300, while cleaning or replacing a clogged EVAP canister may range from $50 to $150. Repairing leaks in the EVAP system or fixing electrical issues can also add to the overall cost. Labor rates at auto repair shops typically range from $80 to $150 per hour, so it's advisable to check local rates for a more accurate estimate.

What does this mean?

Tech Notes for P1469 2020 GMC Sierra

Some 2019-2020 Chevrolet Silverado and GMC Sierra with 2.7L engine may have the Service Engine Soon (SES) Warning Light ON with Diagnostic Trouble Code (DTC) P1467 and/or P1469 set in the Engine Control Module (ECM). The cause is the Evaporative Emission Purge Pump may be filling with liquid fuel due to overfilling the fuel tank. There is a Factory Service Bulletin for this issue, the dealer will inspect the vehicle and replace the Evaporative Emission Purge Pump.

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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 P1469 2020 GMC Sierra Code

1. What are the common symptoms of OBDII code P1469 in a 2020 GMC Sierra?

The common symptoms of OBDII code P1469 in a 2020 GMC Sierra include a check engine light illuminated on the dashboard, rough idling, and potential issues with the vehicle's emissions system.

2. What does the OBDII code P1469 "EVAP Purge Pump Speed Too Low" mean for a 2020 GMC Sierra?

The OBDII code P1469 in a 2020 GMC Sierra indicates that the purge pump speed in the vehicle's evaporative emission control system is below the expected threshold.

3. What are the possible causes of OBDII code P1469 in a 2020 GMC Sierra?

Possible causes of OBDII code P1469 in a 2020 GMC Sierra include a faulty EVAP purge pump, damaged wiring or connectors in the EVAP system, a clogged EVAP canister, or a malfunctioning EVAP pressure sensor.

4. How can I diagnose the OBDII code P1469 in a 2020 GMC Sierra?

Diagnosing OBDII code P1469 in a 2020 GMC Sierra involves using an OBDII scanner to retrieve the code, inspecting the EVAP system components for damage or blockages, and testing the purge pump speed sensor for proper operation.

5. Can I continue driving my 2020 GMC Sierra with OBDII code P1469?

While it may be possible to continue driving a 2020 GMC Sierra with OBDII code P1469, it is recommended to address the issue promptly to prevent potential damage to the vehicle's emissions system and ensure optimal performance.

6. How can I repair OBDII code P1469 in a 2020 GMC Sierra?

Repairing OBDII code P1469 in a 2020 GMC Sierra typically involves replacing the faulty EVAP purge pump, repairing or replacing damaged wiring or connectors, clearing the code with an OBDII scanner, and conducting a thorough system test.

7. Is it possible to clear OBDII code P1469 in a 2020 GMC Sierra without fixing the underlying issue?

Clearing OBDII code P1469 in a 2020 GMC Sierra without addressing the root cause will likely result in the code reappearing once the system detects the same issue, so it is recommended to fix the problem first.

8. How much does it cost to repair OBDII code P1469 in a 2020 GMC Sierra?

The cost to repair OBDII code P1469 in a 2020 GMC Sierra can vary depending on the specific issue, parts needed, and labor rates, but it is advisable to consult a professional mechanic for an accurate estimate.

9. Are there any DIY tips for troubleshooting OBDII code P1469 in a 2020 GMC Sierra?

DIY tips for troubleshooting OBDII code P1469 in a 2020 GMC Sierra include checking the EVAP system for visible damage, ensuring all connections are secure, and conducting basic tests using an OBDII scanner before seeking professional help.

10. How serious is OBDII code P1469 in a 2020 GMC Sierra?

OBDII code P1469 in a 2020 GMC Sierra should be addressed in a timely manner to maintain the vehicle's emissions compliance and prevent potential issues with engine performance. It is advisable to diagnose and repair the problem promptly.

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