2012 Impala Engine Control Module 12630908 | Programmed to Your VIN

Restore Your Impala’s Performance and Reliability

Is your 2012 Impala suffering from frustrating and unpredictable issues like stalling at red lights, poor acceleration, or a check engine light that won’t go away? You’re not alone. The Engine Control Module (ECM) is the brain of your vehicle, and when it starts to fail, it can cause a cascade of problems that are often difficult to diagnose. As a technician with over two decades of experience, I’ve seen firsthand how a faulty ECM can mimic other issues, leading to wasted time and money on unnecessary parts. This isn’t just a component; it’s the central command for your engine’s performance, fuel economy, and emissions.

This isn’t just a replacement part; it’s a complete, ready-to-install solution. We take the guesswork and hassle out of the repair by programming this genuine GM ECM specifically to your vehicle’s VIN. This means it arrives at your door with the latest factory software updates, ready to be installed without requiring expensive trips to the dealership or specialized scan tools for programming. Getting a reliable fix for your 2012 Impala Engine Control Module has never been more straightforward.

Common Signs of a Failing ECM

If your vehicle’s computer is on its way out, you might notice one or more of the following issues. A failing ECM can be the root cause behind diagnostic trouble codes (DTCs) that seem to point elsewhere.

• ✔ Check Engine Light is illuminated with codes like P0601, P0606, or communication errors (U-codes).
• ✔ The engine cranks but refuses to start.
• ✔ Unexplained drops in fuel economy.
• ✔ The vehicle stalls unexpectedly while driving or idling.
• ✔ Noticeable hesitation or loss of power during acceleration.
• ✔ Harsh or erratic automatic transmission shifting.
• ✔ Cooling fans run constantly or not at all.

A Straightforward Guide to Installation

One of the biggest benefits of this module is its plug-and-play nature. Because we program it for you, the complex part is already done. Here’s a general guide for a DIY installation on a 2012 Impala.

1. Safety First: Always disconnect the negative terminal from your vehicle’s battery and wait a few minutes before starting work.
2. Locate the ECM: On the 2012 Impala, the Engine Control Module is typically mounted on the air cleaner bracket in the engine bay. It’s a silver metal box with several large electrical connectors.
3. Disconnect and Remove: Carefully release the locking tabs on the electrical connectors and pull them straight out. Be gentle to avoid damaging the pins. Then, unbolt the module from its mounting bracket.
4. Install the New Module: Bolt your new, pre-programmed ECM into place. Firmly reconnect the electrical connectors, ensuring they click and lock securely.
5. Reconnect Power: Reattach the negative battery terminal. The vehicle may need to perform an idle-relearn procedure, which typically involves starting the engine and letting it idle for a few minutes.
6. Final Check: Start the engine and check for a smooth idle and ensure the check engine light is off. Your repair is complete!

Verified Vehicle Compatibility

This module is a direct replacement for multiple part numbers and fits a wide range of GM vehicles. Please verify your vehicle is on this list. This unit replaces part numbers: 12616889, 12630908, 12637106, 12642665, 12650256, 12651993.