AutoCodes – GMC – P1469 GMC

P1469 GMC 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 GMC 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 346

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

What does this mean?

What are the Possible Causes of the DTC P1469 GMC?

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 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 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 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 P1469 GMC code?

Need more information on how to fix the P1469 GMC code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the P1469 GMC code diagnosed by a professional: Find a repair shop in your area

Information for Specific GMC Models

P1469 2019 GMC Sierra — EVAP Purge Pump Speed Too Low
P1469 2020 GMC Sierra — EVAP Purge Pump Speed Too Low
P1469 2021 GMC Sierra — EVAP Purge Pump Speed Too Low
P1469 2022 GMC Sierra — EVAP Purge Pump Speed Too Low

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 GMC Code

1. What does the OBDII code P1469 mean on a GMC vehicle?

P1469 on a GMC vehicle indicates "EVAP Purge Pump Speed Too Low," meaning the EVAP system's purge pump is not operating at the expected speed.

2. What are the common symptoms of code P1469 in a GMC?

Typical symptoms include an illuminated Check Engine Light, potential fuel odor near the vehicle, and possible difficulty passing emissions tests.

3. What causes the P1469 code on a GMC vehicle?

Common causes include a faulty EVAP purge pump, clogged EVAP system hoses, electrical issues like damaged wiring or connectors, or a malfunctioning powertrain control module (PCM).

4. Can I drive my GMC with the P1469 code?

While the vehicle may still be drivable, prolonged driving with this code can lead to emissions system inefficiency and may cause further damage to EVAP components.

5. How is the P1469 code diagnosed on a GMC?

A technician will use a scan tool to confirm the code, inspect EVAP system components, check for wiring or connection issues, and test the purge pump's functionality.

6. What repairs can fix the P1469 code on a GMC?

Repairs may include replacing the EVAP purge pump, cleaning or replacing clogged hoses, repairing wiring or connectors, or reprogramming the PCM if needed.

7. How much does it cost to repair the P1469 code on a GMC?

Repair costs can vary, but replacing an EVAP purge pump typically costs between $150 and $400, depending on parts and labor rates.

8. Can a loose gas cap cause the P1469 code on a GMC?

While a loose gas cap can trigger some EVAP-related codes, it is unlikely to cause P1469, which specifically relates to the purge pump speed.

9. How can I prevent the P1469 code from occurring on my GMC?

Regular maintenance of the EVAP system, including checking for hose clogs and inspecting electrical connections, can help prevent this code.

10. Does the P1469 code affect fuel economy in a GMC vehicle?

While the code itself may not directly impact fuel economy, a malfunctioning EVAP system can lead to inefficiencies that may slightly reduce mileage over time.