Is Your Chevrolet Colorado Running Rough?
If your 2009-2012 Chevrolet Colorado is experiencing perplexing issues like stalling, poor fuel economy, a persistent check engine light, or a complete no-start condition, the root cause might be a failing Engine Control Module (ECM). The ECM is the brain of your truck’s engine, managing everything from fuel injection and ignition timing to emissions controls. When it fails, it can create a cascade of problems that are often misdiagnosed, leading to wasted time and money on unnecessary sensor replacements.
This is a direct replacement Engine Control Module, service number 1263605, for your vehicle. We take the guesswork out of the repair by pre-programming the unit specifically for your truck using the VIN you provide. This ensures that when you receive the part, it’s ready for a straightforward installation, loaded with the latest factory software updates from GM for optimal performance and reliability.
From the Diagnostic Bay
We had a 2011 Colorado in the shop that was driving the owner crazy. It had an intermittent stalling problem and a random cylinder misfire code (P0300) that would come and go. The owner had already replaced the spark plugs, ignition coils, and even the camshaft position sensor, but the problem persisted. After hooking up our diagnostic scanner and monitoring live data, we noticed the fuel trim and ignition timing values were erratic and inconsistent. This pointed us away from the individual components and towards the central controller. We installed a VIN-programmed ECM, and the truck ran perfectly. It’s a classic case where the ‘brain’ was the issue, not the ‘body’.
Symptoms of a Failing 2009-2012 Colorado ECM
- ✔ Persistent Check Engine Light (CEL) with various trouble codes.
- ✔ Engine stalling or shutting off unexpectedly while driving.
- ✔ Difficulty starting the engine or a complete no-start condition.
- ✔ Noticeable decrease in fuel efficiency.
- ✔ Rough idling or engine hesitation during acceleration.
- ✔ Transmission shifting problems or harsh shifts.
- ✔ Communication errors with diagnostic scan tools.
The Right Part, Programmed Correctly
Don’t settle for a generic, unprogrammed module from a salvage yard that will require expensive dealer programming. Our process is simple: you provide your vehicle’s VIN during checkout, and our technicians flash this ECM with the precise software your truck needs. This ensures all factory settings, security information (anti-theft), and operational parameters are correct. It’s a plug-and-play solution designed to get you back on the road quickly and confidently.
Wide Compatibility Beyond the Colorado
While this is a primary replacement for the 2009-2012 Colorado ECM, this versatile module (part number 1263605) is also a direct fit for a wide range of other GM vehicles. It is interchangeable with service numbers 12636659, 12639300, 12628993, 12628911, 12625453, 12622175, 12630464, and 12678512. Please verify your part number and check the detailed fitment list below to confirm compatibility with your specific make, model, and engine option.
Partial Fitment List:
- 2009-2012 Chevrolet Colorado (2.9L, 3.7L)
- 2009-2012 GMC Canyon (2.9L, 3.7L)
- 2009-2010 Hummer H3 (3.7L)
- 2009 Cadillac CTS (6.2L)
- 2009 Cadillac SRX (4.6L)
- 2009-2011 Cadillac DTS
- 2009-2011 Buick Lucerne (4.6L)
- 2009 Chevrolet Trailblazer (6.0L)
- …and many more. Please check your original part number.
Frequently Asked Questions
Do I need to do any programming after I receive this ECM?
No. We program the module to the VIN you provide before shipping. In most cases, it is a simple plug-and-play installation. However, some vehicles may require a security relearn procedure, which is a simple process that can be done without any special tools. Instructions are typically included.
Where do I provide my vehicle’s VIN?
You can enter your 17-digit Vehicle Identification Number (VIN) during the checkout process. Please double-check it for accuracy, as the programming is based entirely on this number.
Is this a new or used part?
This is a high-quality, tested, and verified genuine OEM part that has been inspected to ensure it meets or exceeds factory specifications. It is programmed with the latest GM software for your vehicle.
What if my original part number is not 1263605?
This module is interchangeable with several other service numbers, including 12636659, 12639300, 12628993, and more as listed in the description. As long as your original part number is on our cross-reference list, this module will work for your vehicle.
Will this fix my check engine light?
If the check engine light and associated fault codes are caused by a failing ECM, then yes, this part will resolve the issue. It’s crucial to properly diagnose the problem first to ensure the ECM is the actual point of failure.