Engine-CodesGMC – P0498 2014 GMC Sierra

P0498 2014 GMC Sierra Code - Evaporative Emission System Vent Valve Control Circuit Low

Quick Answer

The P0498 code for a 2014 GMC Sierra indicates a problem with the Evaporative Emission System Vent Valve Control Circuit being low. Common causes include Faulty vent valve, Wiring or connector issues in the vent valve control circuit, Corrosion or damage to the vent valve. Severity is Low - monitor the vehicle and repair when practical. The vehicle can usually be driven if no severe symptoms are present, but symptoms should be checked before extended driving.

What it means
P0498 2014 GMC Sierra indicates Evaporative Emission System Vent Valve Control Circuit Low.
Common causes
Common causes include Faulty vent valve, Wiring or connector issues in the vent valve control circuit, Corrosion or damage to the vent valve.
Severity
Low - monitor the vehicle and repair when practical.
Can I drive?
The vehicle can usually be driven if no severe symptoms are present, but symptoms should be checked before extended driving.
Table of contents Created and updated by William Orellana on Sep 15, 2024
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Code P0498 2014 GMC Sierra Description

The P0498 code for a 2014 GMC Sierra indicates a problem with the Evaporative Emission System Vent Valve Control Circuit being low. The evaporative emission system is responsible for capturing and storing fuel vapors from the fuel tank to prevent them from being released into the atmosphere. The vent valve controls the flow of vapors from the fuel tank to the charcoal canister for storage.

OBDII Code P0498 2014 GMC Sierra - Evaporative Emission System Vent Valve Control Circuit Low
P0498 2014 GMC Sierra Code - Evaporative Emission System Vent Valve Control Circuit Low

Common Causes of P0498 2014 GMC Sierra

  1. Faulty vent valve
  2. Wiring or connector issues in the vent valve control circuit
  3. Corrosion or damage to the vent valve
  4. Vacuum leaks in the evaporative emission system
  5. Faulty PCM (Powertrain Control Module)

Symptoms of P0498 2014 GMC Sierra

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

How to Fix P0498 2014 GMC Sierra

  1. Begin by diagnosing the specific cause of the P0498 code using a scan tool to pinpoint the issue.
  2. Inspect the vent valve and its wiring for any signs of damage or corrosion. Replace any faulty components.
  3. Check for vacuum leaks in the evaporative emission system and repair as needed.
  4. Clear the code from the PCM and test drive the vehicle to ensure the issue has been resolved.
  5. If the problem persists, further diagnostics may be required to identify any underlying issues with the PCM or other components.

Cost to Fix P0498 2014 GMC Sierra

The typical repair costs for addressing a P0498 code on a 2014 GMC Sierra can range from $100 to $300, depending on the specific cause of the issue and the cost of parts and labor. It's important to note that diagnosis time and labor rates at auto repair shops can vary, so it's advisable to check with local shops for a more accurate estimate.

Tech Notes for P0498 2014 GMC Sierra









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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.

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