Alden GMC

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Engine Light and Diagnostics

Why It Matters

The check engine light in your GMC car or truck, sometimes referred to as a malfunction indicator lamp, signals that a sensor or system has detected a problem. Sometimes the problem is a minor issue like a loose gas cap, but sometimes the light can signal a more serious engine, emission, or fuel system issue. Ignoring check engine and other warning lights can lead to reduced performance, increased emissions, or even potentially catastrophic engine damage over time.

Warning Signs

  • Reduced power
  • Rough idling or stalling
  • Poor fuel economy
  • Smell of fuel or exhaust
  • Additional warning lights

Why service at GM Dealership

At Alden GMC, your local Fairhaven, Massachusetts and Greater New Bedford area GM dealer, our factory-trained technicians use factory-supported diagnostic tools and software systems. Our team is attuned to reading and understanding proprietary GM-specific codes that third-party scanners at other repair shops may miss or misinterpret. Our techs are trained and have GM-specific experience needed to diagnose issues quickly and accurately. This helps you avoid unnecessary repairs and ensures electronic systems are calibrated correctly.

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