📄 Item Description: This is a used OEM Engine Control Module (ECM), also known as an Engine Control Unit (ECU) or Powertrain Control Module (PCM), with part number 12711795. It is compatible with 2021-2023 Chevrolet Trailblazer models equipped with the 1.3L engine. The module has been professionally tested to ensure optimal functionality.​

The ECM is essential for managing engine performance by processing data from various sensors to optimize functions such as fuel injection and ignition timing. It ensures the engine operates efficiently, improving fuel economy, drivability, and engine longevity.​

Key Features:

• Genuine OEM Chevrolet ECM / PCM / ECU​

• Part Number: 12711795​

• Compatible with 2021-2023 Chevrolet Trailblazer models with 1.3L engine​

• Fully tested and operational​

• Direct replacement – programming required​

🚗 Vehicle Compatibility:

• 2021-2023 Chevrolet Trailblazer with 1.3L engine​

✅ Important: Ensure your vehicle's original ECM has part number 12711795. Compatibility may depend on VIN, engine type, and other vehicle specifications. Consult with a Chevrolet dealer or qualified mechanic to confirm compatibility.​

⚙️ Condition:

• Used – Previously installed​

• Tested – Verified from a running vehicle​

• Wear – Minor cosmetic marks; connectors and mounting points are intact​

🛠️ Installation and Programming:

• Professional installation is strongly recommended.​

• Programming is required – ECM must be flashed to your vehicle’s VIN using Chevrolet's diagnostic tools. Improper installation can lead to no-start conditions or diagnostic issues.​

📦 What's Included:

• 1x Engine Control Module (ECM) – Part #12711795​

• No additional hardware, sensors, or accessories included