Is Your 2009-2012 Chevy Colorado Stalling or Running Rough?
If you’re dealing with a persistent check engine light, unpredictable stalling, poor fuel mileage, or a no-start condition in your truck, a failing Engine Control Module (ECM) is a very likely culprit. The ECM is the brain of your vehicle’s engine, managing everything from fuel injection and ignition timing to transmission shifting. When it fails, it can cause a host of frustrating and difficult-to-diagnose problems. Don’t let a faulty computer keep your reliable Colorado off the road.
The Direct Solution: A VIN-Programmed Engine Control Module
This is a direct-fit replacement ECM, service number 12636659, for your 2009–2012 Chevrolet Colorado. The single most important benefit we offer is our complimentary VIN programming service. Before we ship your part, we flash it with the latest, most stable software updates from GM, tailored specifically to your truck’s Vehicle Identification Number (VIN). This ensures that when the module arrives, it’s ready to be installed without requiring an expensive trip to the dealership for programming. It will communicate seamlessly with your truck’s existing systems, just like the original.
Key Features & Benefits
- ✔ Plug & Play Installation: Arrives pre-programmed to your VIN. No extra fees or dealer visits are necessary.
- ✔ Resolves Common Issues: A direct fix for DTCs like P0601, P0606, and other processor faults, as well as symptoms like rough idle, stalling, and poor performance.
- ✔ Latest GM Software: We load the newest factory software to improve engine efficiency and drivability over the original calibration.
- ✔ Guaranteed Compatibility: This module is a direct replacement for a wide range of GM service numbers, ensuring it’s the right part for the job.
Expert Pro Tip From 20+ Years on the Job
Before you install your new 2009–2012 Colorado ECM, take a close look at the main engine wiring harness where it passes through the firewall. Over the years, I’ve seen the protective loom on these harnesses become brittle and crack, exposing the wires. Vibration can cause them to chafe against the metal edge of the firewall, creating an intermittent short that can damage the new ECM. A quick inspection and some electrical tape or a new piece of loom can prevent a costly repeat failure.
Simple, DIY-Friendly Installation Guide
Replacing the ECM on your Colorado is a straightforward job you can do in your own driveway with basic hand tools. On these trucks, the ECM is conveniently located on the passenger side of the engine bay, mounted to the firewall.
- Safety First: Disconnect the negative terminal from your truck’s battery and wait 10-15 minutes for the systems to discharge.
- Locate the ECM: Open the hood and find the module on the passenger-side firewall.
- Disconnect Connectors: Carefully unplug the electrical connectors from the old ECM. They have locking tabs that need to be released—don’t force them.
- Unbolt the Module: Remove the bolts securing the ECM to the firewall bracket.
- Install the New ECM: Mount your new, pre-programmed module in place and tighten the bolts.
- Reconnect Everything: Plug the electrical connectors firmly into the new ECM until they click. Reconnect the negative battery terminal.
- Perform Security Relearn: You may need to perform a simple key-cycle security relearn procedure. Turn the key to the ‘ON’ position for 10-15 minutes, then ‘OFF’ for 30 seconds. Repeat this 2-3 times to sync the new ECM with your vehicle’s anti-theft system. Your truck should then start and run correctly.
Guaranteed Compatibility for Your Vehicle
This ECM is a verified replacement for a wide array of GM vehicles beyond the Colorado. It is directly interchangeable with the following service numbers: 12636659, 12639300, 1263605, 12628993, 12628911, 12625453, 12622175, 12630464, and 12678512. Please provide your VIN at checkout so we can ensure perfect programming for your specific make, model, and engine configuration.