Hello, speedometer readings are most often affected by different than factory tire and wheel sizes. Do you have a different tire and / or wheel size installed on your vehicle compared to what was installed from the factory?
RepairPal Certified shops can diagnose and repair your 2013 Chevrolet Impala. They provide transparent pricing with a minimum 12-month or 12,000-mile warranty on repairs and services.
Short test drive using a professional quality scan tool will quickly determine if problem is within the signal being sent or the instrument cluster - OR - perhaps you're just mistaken.
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