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What issues with the catalytic converter have been reported for the 2012 GMC Terrain?
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Catalytic converters can be quite pricey to replace, and the 2012 GMC Terrain is no exception. It's crucial to keep an eye on components that could put your catalytic converter at risk. The main culprit for catalytic converter issues is a malfunctioning oxygen sensor, which can cause exhaust temperatures to rise excessively. This can result in the rare earth metals in the catalytic converter melting and causing a blockage that restricts exhaust flow. If your oxygen sensors are failing, they will trigger diagnostic trouble codes that can be checked using an OBD-II scan tool. When you see these codes, it's time to replace the oxygen sensor, which may cost around $100. While you may not notice immediate performance improvements, this preventive action can save you from facing a hefty $1,500 bill to replace the catalytic converter down the road.
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If you're experiencing problems with the catalytic converter in your 2012 GMC Terrain, you may observe poor engine performance, slower acceleration, dark smoke, and a foul odor resembling rotten eggs.
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