5 Signs Your GMC’s Exhaust System Needs Repair

As you drive your GMC, the exhaust works hard to clean the engine’s emissions, keep hazardous gases out of the vehicle, and muffle the engine’s roar. If any part of the exhaust wears out or suffers damage, you’ll need to have it repaired right away at your local GMC dealership. Here are five key signs that your truck, SUV, crossover, or van needs prompt exhaust system repair.

 

5 Signs Your GMC’s Exhaust System Needs Repair

Weakening Engine Power

Your vehicle’s powerful engine requires healthy exhaust to allow a smooth outflow of fumes. If the exhaust becomes blocked, gases back up inside the system, which prevents adequate oxygen from entering the engine at the front of the vehicle. This hinders the combustion process, which means your engine will lose power and might start to misfire. 

Decreasing Gas Mileage 

If you find yourself stopping for gas more frequently than usual, you may have a fault in the exhaust system. When clogged, the engine may struggle to generate as much power for each gallon of gas it guzzles. A leak in the exhaust could also create false oxygen readings, which prompts the engine to erroneously inject more fuel to compensate. 

Rattling From Below

As the exhaust pipes and components are underneath your truck, it’s sometimes possible for bumps or jolts to loosen the bolts and hangers that keep it attached. If the catalytic converter loosens in its harness, you’ll hear metallic rattling from below. A damaged cat might also create rattling noises when you rev the engine as loose parts shake around inside it. 

Rotten Egg Smells 

Never ignore a sulfur-like smell of rotten eggs inside the cabin. This might indicate that either your catalytic converter or the muffler are no longer doing their job properly in cleaning the engine’s fumes. This means you’re breathing hazardous gases. Have the problem fixed at once.

Heightened Engine Noise

As the name suggests, the muffler at the end of your exhaust system primarily reduces the engine’s noise. If your muffler is cracked or rusted through, you may hear suddenly louder engine roaring. This noise might exceed the legal limits that define noise pollution in your area. 

Head to Your GMC Dealership for Exhaust System Repair

If you suspect a problem with your exhaust cat, muffler, manifold, resonator, or oxygen sensor, don’t delay having it repaired. Our experienced technicians can have your exhaust and vehicle performing perfectly again in no time. Visit Dutch Miller’s Beckley Automall in Beckley, WV, today. We provide great vehicles, maintenance, and repairs with prompt, courteous customer service.

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