Is Your Colorado Running Rough, Stalling, or Showing a Check Engine Light?
If you’re dealing with frustrating engine problems in your 2009-2012 Chevrolet Colorado, a failing Engine Control Module (ECM) is often the hidden culprit. As the central computer for your truck, a faulty ECM can cause a cascade of issues that are difficult to diagnose, from poor fuel economy and erratic shifting to a complete no-start condition. Don’t keep throwing money at sensors and parts that don’t fix the problem. This is the direct, reliable solution you need.
The Plug-and-Play Solution: Programmed & Ready to Install
Forget about expensive dealership visits, towing fees, and programming charges. We take the hassle out of the repair. When you purchase this ECM, you simply provide us with your vehicle’s 17-digit VIN. Our technicians will then program the module with the latest, most stable General Motors software specific to your truck’s configuration. It arrives at your door ready for a straightforward installation, restoring your vehicle’s performance and reliability.
“A customer’s 2011 Colorado came in last week with a persistent random misfire code (P0300) and poor acceleration. They had already replaced the spark plugs, ignition coils, and even the fuel injectors with no luck. After connecting my scan tool and monitoring live data, I noticed the injector pulse width for cylinder 3 was erratic. This pointed directly to a failing driver circuit inside the original ECM. We installed one of our pre-programmed modules, and the truck ran perfectly immediately. It’s a classic failure I’ve seen dozens of times; the internal electronics wear out, leading to issues that seem like sensor or fuel problems.”
Common Symptoms of a Failing 2009–2012 Colorado ECM:
- ✔ Persistent Check Engine Light (CEL) with various codes
- ✔ Engine stalling, stumbling, or hesitating during acceleration
- ✔ Noticeable decrease in fuel mileage
- ✔ Harsh or incorrect automatic transmission shifting
- ✔ Communication errors with diagnostic scan tools
- ✔ The vehicle cranks but will not start
- ✔ Misfire codes that don’t resolve after replacing plugs or coils
Simple Installation Guide: Get Back on the Road Fast
Installing your new ECM is a job most DIY mechanics can handle in under an hour. For the 2009-2012 Colorado and Canyon, the ECM is conveniently located on the right-hand (passenger side) of the firewall in the engine bay.
- Safety First: Always disconnect the negative terminal from your truck’s battery and wait 10-15 minutes for the system capacitors to discharge.
- Locate the ECM: Find the module on the passenger-side firewall. It will have several large electrical connectors attached.
- Disconnect Connectors: Carefully release the locking tabs on each electrical harness and pull them straight out from the module. Inspect the pins for any corrosion or damage.
- Remove the Old Module: Unbolt the old ECM from its mounting bracket. There are typically a few 10mm bolts holding it in place.
- Install the New Module: Mount your new, pre-programmed ECM onto the bracket and secure the bolts.
- Reconnect Everything: Firmly plug the electrical connectors back into the new module until they click and lock into place. Reconnect your negative battery terminal.
- Final Step: Start the engine. The vehicle will now run on the new module with the correct software. No further programming is required.
Guaranteed Fitment & Interchangeability
This module is a direct replacement for a wide range of GM vehicles and is fully interchangeable with the following service part numbers. Please verify your original part number or contact us with your VIN to confirm compatibility.
Replaces Part Numbers: 12636659, 12639300, 1263605, 12628993, 12628911, 12625453, 12622175, 12630464, and 12678512.
This ECM fits a wide variety of GM Models, including:
- Chevrolet Colorado / GMC Canyon (2009-2012)
- Chevrolet Trailblazer / GMC Envoy (2009)
- Hummer H3 (2009-2010)
- Cadillac CTS, STS, SRX, DTS, XLR (2009-2011)
- Chevrolet Corvette (2009)
- Buick Lucerne (2009-2011)
- Saab 9-7X (2009)