GM Genuine Parts Engine Control Module (ECM) s are designed, engineered, and tested to rigorous standards, and are backed by General Motors. Engine control modules (ECM) continuously monitor a vast network of sensors around the car to primarily control the engine fuel, air, and spark to verify that the engine is running optimally for emissions, fuel economy, driveability and safety.GM Genuine Parts are the true OE parts installed during the production of or validated by General Motors for GM vehicles. Some GM Genuine Parts may have formerly appeared as ACDelco GM Original Equipment (OE).

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• Synchronizes engine valves and pistons for excellent engine performance
• Keeps engine timing and fuel injection running in sync
• Proper alignment, positioning and spacing for easy installation
• Some GM Genuine Parts may have formerly appeared as ACDelco GM Original Equipment (OE)
• GM Genuine Parts are designed, engineered and tested to rigorous standards, and are backed by General Motors
• GM Engineers design and validate OE parts specifically for your Chevrolet, Buick, GMC, or Cadillac vehicle
• GM regularly updates production and service part designs to integrate new materials and technologies