This is a genuine OEM GM Engine Control Module (ECU), part number 12647241. This E78 series controller is the central computer for GM's 1.4L Turbo platform. It manages high-level powertrain operations, including turbocharger boost regulation, fuel injection timing, and Variable Valve Timing (VVT) to ensure the vehicle meets factory performance and efficiency standards.
This unit is the factory-correct replacement for vehicles experiencing "No Start" conditions, internal processor faults (such as P0601 or P0606), or the "Reduced Engine Power" dashboard warning caused by electronic failure. This module was carefully removed from a functioning donor vehicle and has undergone a thorough visual inspection. All high-density connector pins are straight, clean, and free of moisture or corrosion.
This ECU is found across several GM platforms using the 1.4L Turbo engine. Please match your original part number exactly.
Chevrolet Cruze: 2012, 2013, 2014, 2015, 2016 (Limited)
Chevrolet Sonic: 2012, 2013, 2014, 2015, 2016
Chevrolet Volt: 2011, 2012, 2013, 2014, 2015
Buick Encore / Chevy Trax: 2013, 2014, 2015, 2016
Note: This part belongs to the hardware family with Service Number 12643636. Please verify the 8-digit part number on your original unit's sticker before ordering.
OEM Reliability: Genuine GM hardware ensures 100% compatibility with your vehicle's factory sensors and complex CAN-bus electrical system.
Direct Fit: Exact factory replacement; fits into the original engine bay bracket and utilizes the factory dual-plug harness connectors.
Tested Quality: Pulled from a functioning vehicle and inspected for physical health and terminal stability.
IMPORTANT: This ECU is not plug-and-play. This unit is integrated with the GM Global A Security System. It must be professionally programmed/flashed to your specific vehicle's VIN and your existing transponder keys by a GM dealership or a qualified automotive technician using GM Service Programming System (SPS2). The vehicle will not start until the security synchronization is completed.