Engine-CodesGMC – P0496 2014 GMC Sierra

P0496 2014 GMC Sierra Code - Evaporative Emission System Flow During Non-Purge

Quick Answer

The P0496 diagnostic trouble code (DTC) for a 2014 GMC Sierra indicates an issue with the Evaporative Emission Control System (EVAP). Common causes include Faulty EVAP purge valve, Leak in the EVAP system, Clogged charcoal canister. 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
P0496 2014 GMC Sierra indicates Evaporative Emission System Flow During Non-Purge.
Common causes
Common causes include Faulty EVAP purge valve, Leak in the EVAP system, Clogged charcoal canister.
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 07, 2024
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Code P0496 2014 GMC Sierra Description

The P0496 diagnostic trouble code (DTC) for a 2014 GMC Sierra indicates an issue with the Evaporative Emission Control System (EVAP). This code specifically points to a problem with the flow of the evaporative emission system during a non-purge condition. The EVAP system is responsible for capturing and storing fuel vapors from the fuel tank to prevent them from escaping into the atmosphere.

OBDII Code P0496 2014 GMC Sierra - Evaporative Emission System Flow During Non-Purge
P0496 2014 GMC Sierra Code - Evaporative Emission System Flow During Non-Purge

Common Causes of P0496 2014 GMC Sierra

  1. Faulty EVAP purge valve
  2. Leak in the EVAP system
  3. Clogged charcoal canister
  4. Malfunctioning EVAP vent valve
  5. Loose or damaged gas cap

Symptoms of P0496 2014 GMC Sierra

  1. Check Engine Light illuminated
  2. Decreased fuel efficiency
  3. Strong fuel smell
  4. Rough idling or stalling
  5. Difficulty starting the engine

How to Fix P0496 2014 GMC Sierra

  1. Diagnose the issue using a scan tool to confirm the P0496 code and pinpoint the exact cause.
  2. Inspect the EVAP system for leaks, damage, or clogs.
  3. Test the EVAP purge valve and vent valve for proper operation.
  4. Replace any faulty components, such as the purge valve, vent valve, or charcoal canister.
  5. Clear the DTC and test drive the vehicle to ensure the issue has been resolved.

Cost to Fix P0496 2014 GMC Sierra

The cost of repairing a P0496 code on a 2014 GMC Sierra can vary depending on the specific cause of the issue and the labor rates in your area. On average, you can expect to pay anywhere from $100 to $500 for parts and labor. Keep in mind that rates at auto repair shops can vary, so it's best to get a quote from a few different shops before proceeding with the repair. Additionally, the diagnosis time and labor rates can also impact the overall cost of the repair.

Tech Notes for P0496 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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