Restore Peak Performance to Your GM 3.6L V6
Is your 2010-2011 Chevrolet Camaro, Cadillac CTS, or Buick Lacrosse suffering from frustrating engine issues? Symptoms like a persistent Check Engine Light, rough idling, stalling, poor fuel economy, or even a no-start condition often point to a failing Engine Control Module (ECM). The ECM is the central computer of your vehicle, meticulously managing everything from fuel injection and spark timing to transmission shifts and emissions control. When it falters, the entire vehicle’s performance and reliability are compromised.
This genuine OEM replacement ECM, part number 12635019, is the definitive solution to restore your vehicle’s factory operation. We take the guesswork and hassle out of the replacement process. Before shipping, each module is professionally programmed with the latest official GM software updates, specifically matched to your vehicle using the VIN you provide. This ensures optimal performance, fuel efficiency, and emissions compliance right out of the box.
Your Solution for a Failing 2010-2011 Camaro ECM
A faulty ECM can manifest in a variety of ways, often mimicking other component failures, which can lead to costly and incorrect repairs. If you’ve been chasing down sensor issues or fuel system problems without success, it’s time to consider the core of the system. This module is a direct-fit replacement, designed to resolve complex electronic issues and get you back on the road with confidence. Our VIN-specific programming ensures that all vehicle parameters and security information are correctly configured for a seamless installation.
From the Diagnostic Bay
We had a 2011 Cadillac CTS with the 3.6L V6 come into the shop with an intermittent stalling issue that no one could figure out. The owner had already replaced the throttle body and a camshaft position sensor based on generic trouble codes. After hooking up our professional scan tool and monitoring live data, we noticed erratic voltage readings coming from the ECM’s 5-volt reference circuit, but only when the engine was hot. There were no wiring issues. We swapped in one of our pre-programmed ECMs, and the problem was instantly solved. It’s a classic case where the root cause was the central computer, not the components it was monitoring.
Common Symptoms of a Faulty ECM:
- ✔ Persistent Check Engine Light (CEL) with communication error codes (e.g., U0100).
- ✔ Unexplained drops in fuel economy.
- ✔ Engine stalling, stumbling, or hesitating during acceleration.
- ✔ Rough or erratic idling.
- ✔ Difficulty starting the engine or a complete no-start condition.
- ✔ Automatic transmission shifting erratically or harshly.
- ✔ Apparent loss of engine power.
Important Programming Information
VIN Programming is Included: To ensure a plug-and-play installation, you must provide your vehicle’s 17-digit VIN at checkout or by responding to our follow-up email. We will program the module with the correct software for your specific vehicle before it ships.
Special Note for Camaro & Lacrosse Owners: For 2010-2011 Chevrolet Camaro and Buick Lacrosse models, the vehicle’s immobilizer (anti-theft) system is deeply integrated with the original ECM. To make your new module fully functional, we require you to send us your old ECM. We will professionally transfer the necessary immobilizer data to the replacement unit. This service makes the new module plug-and-play, saving you a trip to the dealership for expensive security relearn procedures. We will provide shipping instructions after your purchase.
Verified Vehicle Fitment
This module is a direct replacement for part numbers 19300015, 19300014, 12617230, 12636355, and 12635019, and fits the following vehicles equipped with the 3.6L V6 engine:
- Buick Allure: 2010
- Buick Enclave: 2010-2011
- Buick Lacrosse: 2010-2011
- Cadillac CTS: 2010-2011
- Cadillac STS: 2010-2011
- Chevrolet Camaro: 2010-2011
- Chevrolet Traverse: 2010-2011
- GMC Acadia: 2010-2011
- Saturn Outlook: 2010
Frequently Asked Questions
Why do you need my VIN to program the ECM?
Your Vehicle Identification Number (VIN) allows us to load the exact GM-specified software calibration for your car’s engine, transmission, and options. This ensures perfect compatibility and performance without any additional programming required on your end.
What happens if I don’t send my old ECM for my Camaro?
If you have a Camaro or Lacrosse and do not send in your original ECM for immobilizer data transfer, the new module will not be able to start the car. The vehicle’s anti-theft system will prevent it from running. This data transfer service is essential for a plug-and-play experience.
Is this a difficult part to install?
The physical installation is straightforward for someone with basic mechanical skills. It typically involves disconnecting the battery, unplugging the electrical connectors, and unbolting the module. The location varies by model (e.g., behind the fan shroud on a Traverse, in the engine compartment on a CTS). Because we pre-program it, the electronic setup is already done for you.
Will this fix my Check Engine Light?
If the Check Engine Light is caused by an internal failure of the ECM, then yes, this part will resolve the issue. It’s crucial to have your vehicle properly diagnosed to confirm the ECM is the source of the problem before ordering.
What are the compatible part numbers for this module?
This ECM is a direct replacement for several part numbers, including 19300015, 19300014, 12617230, 12636355, and the primary part number 12635019.