2019 Chevrolet Equinox Smells Like Gas

Common Causes of Gas Smells in Your 2019 Chevrolet Equinox and How to Address Them Safely

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Reviewed by
Aisha
Written by RepairPal Car Genius
Updated January 14, 2025
0%
15% chance it's the
Gas Cap
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40% chance it's the
Emissions Control System
0%
45% chance it's
Something else
The most common reasons a 2019 Chevrolet Equinox smells like gas are the gas cap, the fuel system, or the emissions control system.
  • Gas Cap: A loose or damaged gas cap can cause fuel vapors to escape, triggering the check engine light and potentially affecting fuel system pressure.
  • Emissions Control System: A faulty emissions control system can lead to increased hydrocarbon emissions and trigger the check engine light due to malfunctioning components like the EGR valve or O2 sensors.
Proper diagnosis will determine the exact cause of your symptom, saving you money on unnecessary repairs. The diagnostic experts at RepairPal Certified shops have the right tools and experience to solve any symptom.

How much does it cost to fix a 2019 Chevrolet Equinox smells like gas?

Common Repairs

The total repair cost will vary based on the condition of your vehicle and the number of repairs needed to fix your symptom. Proper diagnosis will save you money by finding the exact repairs needed to fix your car right the first time.

A failing catalytic converter can cause a vehicle to fail emissions tests and turn on the check engine light. The exhaust might have an unusual smell. A restricted catalytic converter can result in a loss of engine power.

» LEARN MORE: How to tell if your catalytic converter is failing

The check engine light will illuminate any time there is a failed EVAP system test. This will be indicated by the various on-board diagnostics trouble codes that are stored in the vehicle's memory. Also, in some models, there may be a popping sound accompanying the check engine light, as the leak detection pump continuously attempts to pressurize the fuel tank. The canister may also cause difficulty starting the engine, a rough idle, and poor fuel mileage.

The check engine light will illuminate any time there is a failed EVAP system test. This will be indicated by the various on-board diagnostics trouble codes that are stored in the vehicle's memory. Also, in some models, there may be a popping sound accompanying the check engine light, as the leak detection pump continuously attempts to pressurize the fuel tank. A fuel tank leak may also cause difficulty starting the engine, a rough idle, and poor fuel mileage. When a fuel tank is simply corroded to the point of failure, the exterior tank condition rarely shows damage. The inside of the fuel tank will be rusted or corroded, and rust flakes or other debris may be floating in the fuel.

For most vehicles, the only symptom will be a check engine light or fuel tank filler cap light illuminating on the driver instrument cluster. This is to signal that there is an evaporative emissions (EVAP) leak. In some situations, the vehicle may take longer than normal to start, or, more rarely, the engine may not start at all. on-board diagnostic (OBD) trouble codes will refer to EVAP system failures such as a small or massive EVAP system leak. Lastly, the powertrain control module may notice a lean running condition, which could even lead to random and infrequent misfires.

What are the steps to diagnose a gas smell in a 2019 Chevrolet Equinox?

When diagnosing a gas smell in your 2019 Chevrolet Equinox, it's essential to adopt a systematic approach that prioritizes simpler checks before moving on to more complex diagnostics. Start by visually inspecting the area beneath your vehicle for any signs of fuel leaks, such as puddles or drips, which can indicate a problem with the fuel system. Next, ensure that the fuel cap is securely tightened, as a loose or damaged cap can allow gas odors to escape. Following this, examine the fuel lines for any visible damage or leaks, as these can also contribute to the smell. Pay special attention to the fuel injector O-rings, as they can degrade over time and lead to gas odors if worn or damaged. Additionally, inspect the fuel tank for any cracks or signs of damage that could be causing the smell. If, after these checks, you are still unable to identify the source of the gas odor, it is advisable to consult a qualified mechanic for a thorough inspection. This methodical approach not only helps in pinpointing the issue effectively but also ensures that you address the simplest potential problems first, saving time and effort in the diagnostic process.

What could be causing a gas smell in my 2019 Chevrolet Equinox?

If you notice a gas smell in your 2019 Chevrolet Equinox, it’s crucial to identify the underlying cause to ensure safety and prevent further damage. One of the most common culprits is a fuel leak, which can occur in various parts of the fuel system, including the fuel tank, lines, or injectors. A visual inspection of these components can help you spot any obvious signs of leakage. Additionally, a faulty fuel injector may not atomize fuel correctly, leading to a strong gasoline odor; checking for any signs of wear or malfunction can be beneficial. Another area to investigate is the evaporative emissions system, where issues like a malfunctioning charcoal canister or purge valve can allow gas vapors to escape. Don’t overlook the gas cap, as a loose or damaged cap can also release fuel vapors into the cabin. Lastly, consider the exhaust system; leaks from components such as the exhaust manifold or catalytic converter can sometimes mimic a gas smell. While some of these checks can be performed at home, it’s advisable to consult a qualified mechanic for a thorough inspection to ensure your vehicle remains safe and operational.

How urgent is it to address a gas smell in a 2019 Chevrolet Equinox?

Addressing a gas smell in your 2019 Chevrolet Equinox is not just a matter of inconvenience; it is a pressing safety concern that should never be overlooked. The presence of gasoline fumes can indicate a fuel leak, which poses a significant fire hazard due to the highly flammable nature of gasoline. Moreover, inhaling these fumes can lead to serious health issues, including headaches, dizziness, and nausea, making it essential to prioritize your well-being. Ignoring this warning sign can escalate into more severe problems, such as engine damage or decreased vehicle performance, which could result in costly repairs down the line. Therefore, if you detect a gas smell, it is crucial to act swiftly by either conducting a thorough inspection yourself or seeking professional help to identify and rectify the source of the odor. Taking immediate action not only ensures your safety but also protects the integrity of your vehicle.

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