Restore Peak Performance to Your GM 3.6L Engine
The Engine Control Module (ECM), often called the engine’s brain, is the master computer responsible for managing every aspect of your vehicle’s engine performance. From fuel mixture and ignition timing to idle speed and emissions, the ECM makes thousands of calculations per second to ensure your 2010-2011 Cadillac CTS, Buick LaCrosse, or Chevy Traverse runs smoothly, efficiently, and reliably. When this critical component begins to fail, it can cause a cascade of frustrating and often difficult-to-diagnose problems.
This replacement ECM, part number 12635019, is the definitive solution for a faulty engine computer in a wide range of 2010-2011 GM vehicles equipped with the 3.6L V6 engine. We take the guesswork and additional expense out of the repair process by programming the module specifically to your vehicle’s Vehicle Identification Number (VIN) before it ships. This ensures that it integrates seamlessly with your vehicle’s existing systems, just like the original part from the factory.
Common Symptoms of a Failing ECM
If your vehicle is experiencing any of the following issues, a failing engine computer could be the root cause. A faulty ECM can mimic many other component failures, making diagnosis tricky. Look for these common warning signs:
- ✔ Solid or flashing Check Engine Light (CEL) with various trouble codes.
- ✔ Engine stalling, stumbling, or hesitating, especially under load.
- ✔ Noticeable decrease in fuel economy.
- ✔ Rough or erratic idling.
- ✔ Complete no-start condition where the engine cranks but won’t fire.
- ✔ Misfire codes (e.g., P0300-P0306) that persist after replacing plugs and coils.
- ✔ Loss of communication with the diagnostic scan tool.
- ✔ Automatic transmission shifting problems or harsh engagement.
The Direct-Fit Solution: A Programmed 2010-2011 CTS ECM
Don’t settle for a generic, unprogrammed module that requires expensive dealer tools for setup. Our process is simple and effective. When you purchase this ECM, you provide us with your vehicle’s VIN. Our technicians then use official GM equipment to load the latest, most up-to-date software and calibrations specific to your exact make, model, and options. This means that for most compatible vehicles, the module arrives ready for a true plug-and-play installation. Simply disconnect the battery, swap the modules, reconnect the battery, and you’re ready to go. No additional programming or dealer visits are required.
Special Note for Camaro and LaCrosse Owners
Due to the specific anti-theft (immobilizer) systems used in the 2010-2011 Chevrolet Camaro and Buick LaCrosse, a simple VIN program is not sufficient for a plug-and-play installation. To ensure full functionality, we require your original ECM to be sent to us. We will professionally extract the unique immobilizer data from your old module and transfer it to the replacement unit. This service is included in the purchase price and guarantees the new ECM will start and run your vehicle without any security-related issues. We will contact you with shipping instructions after your purchase.
Guaranteed Compatibility
This module is a direct replacement for several GM part numbers and fits a wide array of vehicles. Please verify that your vehicle and original part number are listed below.
Compatible Part Numbers: 19300015, 19300014, 12617230, 12636355, 12635019
Fitment:
- 2010-2011 Buick LaCrosse (3.6L)
- 2010-2011 Chevrolet Traverse
- 2010-2011 Cadillac CTS (3.6L)
- 2010-2011 Chevrolet Camaro (3.6L)
- 2010 Saturn Outlook
- 2010 Buick Allure (3.6L)
- 2010-2011 Buick Enclave
- 2010-2011 GMC Acadia
- 2010-2011 Cadillac STS (3.6L)
Frequently Asked Questions
What is VIN programming and why is it necessary?
VIN programming is the process of loading your vehicle’s specific software and calibrations onto the ECM. Every vehicle has slight variations in its systems (transmission, emissions, options). Programming with your VIN ensures the ECM works perfectly with your exact configuration, preventing compatibility issues and check engine lights.
Will I need to have this programmed by a dealer after I receive it?
No. For all listed vehicles except the Camaro and LaCrosse, this ECM arrives fully programmed and ready for installation. No further programming is needed. For Camaro and LaCrosse, the immobilizer data transfer we perform makes it plug-and-play once you receive it back.
Why do you need my old ECM for a Camaro or LaCrosse?
The Camaro and LaCrosse have a more complex anti-theft system. The immobilizer data, which allows the car to start, is unique to your original ECM and keys. We must transfer this specific data from your old module to the new one to ensure your vehicle recognizes it and starts properly.
Where is the ECM located on my vehicle?
The location varies by model. On the Cadillac CTS and STS, it’s typically in the right-hand front of the engine compartment. For SUVs like the Traverse, Acadia, Enclave, and Outlook, it’s often found behind the fan shroud. On the LaCrosse and Allure, check the left-hand side of the engine compartment. Always disconnect the battery before attempting removal.
How do I provide my VIN after purchase?
After you complete your purchase, you can send us a message with your 17-digit VIN. We cannot program and ship the module until we receive this information, so please provide it promptly to avoid delays.