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The OEM E39A Engine Control Module (ECM) is a front placement module that requires programming. It is designed for easy installation and features a clip-on mounting style. Made of aluminum and plastic, this Engine Control Unit (ECU) is a genuine GM product with a manufacturer part number of E39A 12651631, 12657781, E39A 12653998, E39A 12666658, E39A 12651807, 12651807, 12651631, and E39A 12657781 12653998. This module is a performance part with a maximum amperage of factory and comes with a module, powertrain control module, and engine ECM electronic control module.
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