The Chevy Equinox and GMC Terrain with 2.4L engines, spanning model years 2010-2017, have garnered attention in the automotive world for issues related to high oil consumption and catalytic converter degradation. If you own one of these models or are considering purchasing one, it’s essential to be aware of these recurring problems and recommended actions to mitigate damage and prolong the life of your vehicle. This article explores common catalytic converter issues tied to these engines and provides actionable steps to maintain engine health and avoid costly repairs.
Understanding Catalytic Converter Issues in 2.4L Equinox and Terrain Models
The 2.4L engines in the Chevy Equinox and GMC Terrain are known for having catalytic converter problems, often arising from excessive oil consumption. Since catalytic converters are designed to reduce harmful emissions by converting toxic gases into less harmful substances, they are vulnerable to contamination from unburned oil. In these engines, oil consumption has been shown to exceed normal expectations, leading to frequent catalytic converter damage and failure.
Technical Service Bulletins (TSBs) have been issued over the years to address these issues, such as:
- TSB #0106 01 011L
- PIP5232C
- 14535 (2010)
- PI0010 (2010)
- 16-NA-383
Each TSB provides recommended steps for reducing oil consumption and maintaining proper engine performance. Here’s a summary of the recommended actions to help protect the catalytic converter and other essential components in your Equinox or Terrain.
Recommended Actions to Address Oil Consumption and Catalytic Converter Health
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Monitor Oil Consumption
The 2.4L engine’s high oil consumption can lead to frequent catalytic converter damage if left unchecked. Drivers are advised to regularly check oil levels and look for signs of excessive oil consumption, such as visible blue smoke from the exhaust, reduced performance, or the need for frequent top-ups. High oil consumption not only increases maintenance costs but also leads to a build-up of carbon in the combustion chamber, negatively impacting the catalytic converter’s performance.
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Inspect and Secure Ignition Coil Grounds
Ensuring the ignition coil grounds are properly secured to the engine block is essential for preventing electrical issues that could affect overall engine performance. Loose or corroded grounds can lead to erratic combustion and engine misfires, which can further damage the catalytic converter over time. During routine maintenance, check the grounds on each ignition coil to ensure a reliable connection.
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Update the ECM per TSBs #14535 and #PI0010
The Engine Control Module (ECM) is responsible for managing various aspects of the engine’s operation, including fuel and air mixture, ignition timing, and emissions control. GM has released multiple ECM updates to improve the efficiency and reliability of the 2.4L engine. Make sure your ECM is up-to-date with the latest calibrations per TSBs #14535 and #PI0010. This will help optimize performance, improve fuel economy, and may reduce oil consumption, ultimately extending the life of your catalytic converter.
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Use Run-Rite Sledgehammer (Decarbonizer) for Carbon Buildup
The high oil consumption in these engines leads to carbon deposits in the combustion chamber, which can clog the catalytic converter and hinder engine efficiency. To counteract this, use a Run-Rite Sledgehammer (Decarbonizer) product to clean out carbon deposits from the combustion chamber. Decarbonizing the chamber can improve combustion efficiency, reduce emissions, and prevent premature catalytic converter failure.
Additional Tips for Prolonging Catalytic Converter Life
In addition to following the above recommendations, there are a few general best practices that can help extend the life of your catalytic converter:
- Use High-Quality Oil and Regularly Change Oil: Since oil quality can significantly affect consumption and combustion, be sure to use the correct oil grade and change it at regular intervals.
- Avoid Extended Idling and Short Trips: Frequent short trips can cause unburned fuel to enter the exhaust, straining the catalytic converter.
- Fix Engine Issues Promptly: Any issues that cause rough idling, misfiring, or erratic combustion should be addressed immediately to prevent catalytic converter contamination.
Final Thoughts
While the Chevy Equinox and GMC Terrain 2.4L models from 2010-2017 are prone to catalytic converter issues, following the manufacturer’s recommended actions and TSB updates can help manage oil consumption and prolong the life of these components. Stay proactive in maintenance and seek advice from your mechanic to ensure all TSB updates are performed.