Is your 2009-2012 Chevrolet Colorado running rough, stalling, or refusing to start? Are you battling a persistent Check Engine Light that won’t go away? These are classic signs of a failing Engine Control Module (ECM), the electronic brain of your truck’s engine. A faulty ECM can cause a cascade of frustrating and seemingly unrelated problems, from poor fuel economy to complete transmission failure. Don’t let a bad computer keep your reliable truck off the road. This direct-fit Engine Control Module, part number 12628911, is the definitive solution to restore your vehicle’s performance, reliability, and drivability.
The ECM is responsible for managing a complex network of sensors and actuators that control everything from the air-fuel mixture and ignition timing to transmission shift points and emissions systems. When it begins to fail, the signals it sends become erratic or stop altogether, leading to poor performance and potential damage to other components. Replacing it is not just about fixing a single problem; it’s about restoring the entire powertrain’s operational harmony.
Common Symptoms of a Failing ECM
- ✔ Check Engine Light: The most common indicator, often with codes related to sensors, misfires, or communication errors (U-codes).
- ✔ Engine Stalling or Misfiring: The engine may randomly stall, hesitate during acceleration, or run rough due to incorrect fuel and spark commands.
- ✔ No-Start Condition: The vehicle may crank but fail to start because the ECM isn’t activating the fuel pump or ignition coils.
- ✔ Poor Fuel Economy: A failing module can’t efficiently manage the engine’s fuel delivery, causing a noticeable drop in MPG.
- ✔ Transmission Shifting Problems: The ECM works with the Transmission Control Module (TCM), and a fault can lead to harsh shifting, getting stuck in gear, or failure to shift.
- ✔ Intermittent Electrical Issues: Fans not working correctly or other strange electronic behavior can sometimes be traced back to the main computer.
Why Choose Our 2009-2012 Colorado Engine Module?
This isn’t just a part in a box; it’s a complete, ready-to-install solution. The biggest hurdle when replacing a modern ECM is the complex programming required to make it communicate with your specific vehicle. We eliminate that obstacle entirely. When you order, you provide us with your vehicle’s 17-digit Vehicle Identification Number (VIN). Our technicians will then program this module with the latest, most stable software updates directly from General Motors. This ensures that the computer is a perfect match for your truck’s factory configuration, including its engine, transmission, and emissions equipment. This VIN-matching service means no expensive trips to the dealership for programming. It’s designed for a straightforward, plug-and-play installation.
This module is a direct replacement for a wide range of GM vehicles and is interchangeable with multiple service numbers, including 12636659, 12639300, 12628993, and more. Please verify the comprehensive fitment list below to ensure compatibility with your specific make, model, and engine option. By choosing our pre-programmed 2009-2012 Colorado Engine Module, you are getting a reliable, cost-effective component that restores your vehicle to its factory-specified operational state.
Installation and Compatibility
Installation is generally straightforward for a seasoned DIYer or any professional mechanic. The ECM on the 2009-2012 Colorado and Canyon is typically located on the right-hand side of the firewall in the engine bay. Always disconnect the negative battery terminal before beginning any work on your vehicle’s electrical system. Carefully unplug the wiring harness connectors and unbolt the old module. Install the new module, reconnect the harnesses, and then reconnect the battery. In many cases, the vehicle will start and run perfectly. Some vehicles may require a security relearn procedure (often called a CASE relearn), which can be performed with a capable scan tool or sometimes with a simple key-cycling procedure. This high-quality 2009-2012 Colorado Engine Module is your key to solving complex engine problems and getting back on the road with confidence.
Frequently Asked Questions
Is this part ready to install when I receive it?
Yes! This module is programmed to your vehicle’s specific VIN before it ships. This means it’s ready for installation right out of the box, with no need for an expensive trip to the dealership for programming.
Where do I provide my VIN?
You can provide your 17-digit Vehicle Identification Number (VIN) during the checkout process. There will be a designated field for you to enter it. Please double-check it for accuracy to ensure correct programming.
Will this fix my check engine light?
If the check engine light is caused by a faulty ECM, then yes, this part will resolve the issue. However, it’s crucial to ensure the root cause of the problem has been properly diagnosed. This module will not fix issues caused by faulty sensors, wiring, or other mechanical components.
What is a security or CASE relearn?
A CASE (Crankshaft Angle Sensor Error) relearn is a procedure that synchronizes the new ECM with your engine’s crankshaft position sensor. Many vehicles will not require this, but some might to clear certain codes and ensure optimal performance. This can be done with a high-end scan tool or by a professional mechanic.
Is this compatible with other GM vehicles?
Absolutely. While this is a primary fit for the Colorado and Canyon, this ECM (part number 12628911 and its interchanges) was used across a wide range of GM vehicles, including the Hummer H3, Cadillac CTS, Chevy Trailblazer, and more. Please refer to the detailed fitment list on the product page to confirm compatibility.