Engine-CodesGMC – P0496 2017 GMC Sierra

P0496 2017 GMC Sierra Code - Evaporative Emission System Flow During Non-Purge

Quick Answer

The P0496 code on a 2017 GMC Sierra indicates a problem with the evaporative emission control system. Common causes include Faulty purge valve, Leak in the evaporative emissions 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 2017 GMC Sierra indicates Evaporative Emission System Flow During Non-Purge.
Common causes
Common causes include Faulty purge valve, Leak in the evaporative emissions 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 08, 2024
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Code P0496 2017 GMC Sierra Description

The P0496 code on a 2017 GMC Sierra indicates a problem with the evaporative emission control system. Specifically, it signifies that there is a flow issue detected during a time when the purge valve is not activated. The evaporative emission system is responsible for capturing and storing fuel vapors from the fuel tank to prevent them from escaping into the atmosphere. When this code is triggered, it means that there is a leak or blockage in the system that is causing the flow of vapors to be disrupted.

OBDII Code P0496 2017 GMC Sierra - Evaporative Emission System Flow During Non-Purge
P0496 2017 GMC Sierra Code - Evaporative Emission System Flow During Non-Purge

Common Causes of P0496 2017 GMC Sierra

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

Symptoms of P0496 2017 GMC Sierra

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

How to Fix P0496 2017 GMC Sierra

  1. Diagnose the specific cause of the P0496 code using a scan tool
  2. Inspect the purge valve, vent valve, charcoal canister, and hoses for leaks or blockages
  3. Replace any faulty components, such as the purge valve or charcoal canister
  4. Clear the code and reset the Check Engine light
  5. Perform a drive cycle to ensure the code does not return

Cost to Fix P0496 2017 GMC Sierra

The typical repair costs for resolving a P0496 code on a 2017 GMC Sierra can range from $100 to $500, depending on the specific cause of the issue and the cost of replacement parts. This estimate includes both parts and labor. It is important to note that diagnosis time and labor rates at auto repair shops can vary, so it is advisable to check with local shops for a more precise estimate.

Tech Notes for P0496 2017 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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