Rick's Free Auto Repair Advice

Posts Tagged: ECM Repair

ECM Repair

How to perform an ECM Repair The engine control module (ECM) is the main computer in your vehicle. Each carmaker refers to it by a different name. Some call it a powertrain control module (PCM). Others call it an engine control unit (ECU). A PCM controls both the engine and the transmission, while an ECM or ECU usually only controls the engine. In vehicles with an ECU or ECM, there‚Äôs usually another module to control the transmission. When to do an ECM repair or replace an ECM? Many DIYers jump … Read More

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