AutoCodes – GMC – P1469 2020 GMC Sierra

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

Quick Answer

Purge capacity is being reduced by technologies that improve fuel economy. Common causes include Faulty Evaporative Emission Purge Pump, Evaporative Emission Purge Pump harness is open or shorted, Evaporative Emission Purge Pump 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: P1469 2020 GMC Sierra indicates EVAP Purge Pump Speed Too Low.
Common causes: Common causes include Faulty Evaporative Emission Purge Pump, Evaporative Emission Purge Pump harness is open or shorted, Evaporative Emission Purge Pump 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 283

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 Apr 18, 2023

Description
Possible Causes
How To Fix
Tech Notes
Cost to Diagnose
FAQs
Comments
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Code P1469 2020 GMC Sierra Description

Purge capacity is being reduced by technologies that improve fuel economy. The Evaporative Emission Purge Pump is used to purge stored vapors from the Evaporative Emission Canister and is required to increase the purge volumes to meet LEV 3 Evaporative Emission requirements. The Evaporative Emission Purge Pump has an integral pressure sensor for controlling purge vapors from the canister. The Engine Control Module (ECM) monitors the Evaporative Emission Purge Pump, and the Diagnostic Trouble Code (DTC) will be set when the EVAP Purge Pump Speed is less than 100 RPM for greater than 5 s.

OBDII Code P1469 2020 GMC Sierra - EVAP Purge Pump Speed Too Low - AutoCodes.com — P1469 2020 GMC Sierra Code - EVAP Purge Pump Speed Too Low

What does this mean?

What are the Possible Causes of the DTC P1469 2020 GMC Sierra?

Faulty Evaporative Emission Purge Pump
Evaporative Emission Purge Pump harness is open or shorted
Evaporative Emission Purge Pump circuit poor electrical connection
Faulty Engine Control Module (ECM)

How to Fix the DTC P1469 2020 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 does this mean?

Code Tech Notes

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.

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the P1469 2020 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.

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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.