What Does an ECM Do? And Why Should You Get It Reprogrammed?

“Hi, my name’s Elliot. I have a diesel-powered Volvo truck. It’s ‘check engine light’ stay on. The vehicle is working fine except for the occasional hiccups during the start. Also, gas mileage has gotten worse. It’s been only ten months since I bought it. A mechanic suggested I get the ECM reprogramed. I’m not sure …

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