Restore Peak Performance to Your GM Vehicle
Is your 2015-2016 Chevrolet Colorado, GMC Canyon, or other compatible GM vehicle suffering from perplexing engine issues? A faulty Engine Control Module (ECM), the central computer of your engine, is often the culprit behind poor performance, random stalling, or a persistent check engine light. This replacement Engine Control Module, part number 12663391, is the definitive solution to restore your vehicle’s factory operation and reliability. We take the guesswork and dealership expense out of the equation by programming this module specifically for your vehicle using your VIN before it ships. This ensures a seamless installation process and gets you back on the road with confidence.
Diagnosing Your 2015-2016 Colorado ECM
The ECM is responsible for managing critical engine functions, including fuel injection, ignition timing, and emissions systems. When it begins to fail, it can manifest in a variety of symptoms that can be difficult to trace. If you’re experiencing several of the issues below, it’s a strong indication that your engine’s computer may need replacement.
Common Symptoms of a Failing ECM
- ✔ Persistent Check Engine Light (CEL) with various trouble codes, especially communication codes (U-codes).
- ✔ Engine stalling, stumbling, or hesitating intermittently.
- ✔ Noticeable decrease in fuel economy.
- ✔ Rough idling or misfires that can’t be traced to spark plugs or coils.
- ✔ Complete no-start condition where the engine cranks but will not fire.
- ✔ Transmission shifting issues or erratic behavior.
- ✔ Failure to communicate with diagnostic scan tools.
A True Plug-and-Play Solution
The biggest hurdle in replacing a modern ECM is the complex programming required to sync it with your vehicle’s specific systems. We eliminate this step for you. Upon purchase, simply provide us with your vehicle’s 17-digit VIN. Our technicians will flash the module with the latest, most stable software updates directly from GM, ensuring it matches your vehicle’s original configuration. This means no expensive trips to the dealership for programming. While the module comes fully programmed, some vehicles may require a simple security relearn procedure, which can typically be done in your driveway without special tools.
Wide-Ranging GM Compatibility
This module is a direct replacement for a variety of popular GM trucks, SUVs, and cars. It is compatible with multiple part numbers, including 12692067, 12676230, 12656993, 12662034, 12672537, 12673195, 12663391, 12672963, and 12669318. Please verify your part number and check the detailed fitment list below to ensure compatibility:
- Chevrolet Colorado (2015-2016) – 3.6L
- GMC Canyon (2015-2016) – 3.6L
- Chevrolet Silverado 1500 (2014-2016)
- GMC Sierra 1500 / Denali 1500 (2014-2016)
- Chevrolet Tahoe / Suburban 1500 (2015-2016)
- GMC Yukon / Yukon XL 1500 (2015-2016)
- Cadillac Escalade / ESV (2015-2016)
- Chevrolet Corvette (2014-2016)
- Chevrolet Camaro (2016) – 6.2L
- Cadillac ATS (2014-2016) – 3.6L
- Cadillac CTS (2014-2016) – 3.6L, 6.2L
- Cadillac XTS (2014-2016) – 3.6L
Frequently Asked Questions
Do I need to get this ECM programmed by a dealer?
No. We handle all the programming for you before shipment. Simply provide your vehicle’s VIN during or after checkout, and we will flash the module with the correct GM software for your specific vehicle. This saves you time and money.
What is a security relearn and is it difficult?
A security relearn, also known as a key relearn or anti-theft relearn, is a simple procedure that syncs the new ECM with your vehicle’s existing keys and anti-theft system. For most GM vehicles, this involves turning the key to the ‘ON’ position for 10-15 minutes, then off, and repeating the cycle three times. Instructions are readily available online for your specific model and it requires no special tools.
Where can I find my vehicle’s VIN?
Your 17-digit Vehicle Identification Number (VIN) can be found in several places: on the driver’s side of the dashboard (visible through the windshield), on the driver’s side door jamb sticker, and on your vehicle’s registration and insurance documents.
Will this fix my car’s problem for sure?
This module will resolve any issues directly caused by a faulty ECM. However, it’s crucial that the vehicle is diagnosed correctly. This part will not fix problems related to other faulty components like sensors, wiring, or mechanical parts. We recommend a professional diagnosis if you are unsure of the root cause of your vehicle’s symptoms.
Is this part compatible with part number 12672537?
Yes. This module is a direct, interchangeable replacement for multiple GM part numbers, including 12672537, 12692067, 12663391, and others listed in the description. As long as your vehicle is on the fitment list, this module will function correctly.