Restore Peak Performance to Your Vehicle
Is your Cadillac CTS, Buick Lacrosse, or Chevy Traverse suffering from perplexing issues like a persistent check engine light, erratic engine behavior, stalling, or a no-start condition? These are common indicators of a failing Engine Control Module (ECM), the central computer responsible for managing your vehicle’s engine performance, fuel economy, and emissions. Don’t let a faulty module keep you off the road. This direct-fit Engine Control Module, part number 12635019, is the definitive solution to get your vehicle running reliably again.
From the Diagnostic Bay
We had a 2011 GMC Acadia come in with a complaint of intermittent stalling and a check engine light with codes for multiple sensor circuits. The previous shop had already replaced a camshaft sensor and an O2 sensor without success and was ready to condemn the ECM. Before ordering a new one, we performed a thorough check of the basics. We found a corroded ground wire on the engine block, just below the driver-side cylinder head. After cleaning the connection point and re-securing the ground, all the sensor codes vanished and the stalling stopped. This is a crucial reminder: always verify power and ground integrity at the ECM connector before replacing the module. A simple wiring issue can perfectly mimic a complex internal failure, saving you time and money.
Is a Failing ECM Affecting Your Drive?
A compromised Engine Control Module can manifest in numerous ways, often starting subtly and worsening over time. If you’re experiencing any of the following, it’s a strong sign that your ECM may need replacement.
- ✔ Check Engine Light: The most common symptom, often with codes that are inconsistent or point to multiple unrelated sensors.
- ✔ Engine Stalling or Misfiring: The engine may stumble, hesitate during acceleration, or stall unexpectedly.
- ✔ Poor Fuel Economy: An inefficiently running engine, managed by a faulty ECM, will consume more fuel than usual.
- ✔ No-Start Condition: The engine may crank but fail to start, as the ECM isn’t properly controlling the fuel injectors or ignition coils.
- ✔ Transmission Shifting Problems: The ECM communicates with the transmission controller, and a failure can lead to harsh or erratic shifting.
- ✔ Loss of Power: Your vehicle may feel sluggish and unresponsive, especially under load.
The Perfect Solution: A Pre-Programmed 2010-2011 CTS ECM
What sets this module apart is our professional programming service. We don’t just send you a part; we provide a comprehensive solution. Upon purchase, you will provide us with your vehicle’s 17-digit Vehicle Identification Number (VIN). Our technicians will then use official GM equipment to flash the module with the latest, most stable software specific to your exact vehicle. This critical step ensures that the ECM communicates perfectly with all other systems in your car, from the transmission to the anti-lock brakes and security system. This eliminates the need for an expensive trip to the dealership for programming.
Wide-Ranging GM 3.6L Compatibility
This module is a direct replacement for a variety of popular GM vehicles equipped with the 3.6L V6 engine. Please verify your vehicle is on the list below. This unit is compatible with the following part numbers: 19300015, 19300014, 12617230, 12636355, 12635019.
- Buick Allure: 2010
- Buick Enclave: 2010-2011
- Buick Lacrosse: 2010-2011 (3.6L)
- Cadillac CTS: 2010-2011 (3.6L)
- Cadillac STS: 2010-2011 (3.6L)
- Chevrolet Camaro: 2010-2011 (3.6L)
- Chevrolet Traverse: 2010-2011
- GMC Acadia: 2010-2011
- Saturn Outlook: 2010
Important Note for Camaro & Lacrosse Owners: Due to the specific anti-theft systems in the 2010-2011 Camaro and Lacrosse, a simple VIN flash is not sufficient for a plug-and-play installation. For these two models, we require you to send us your original ECM. We will extract the specific immobilizer data and transfer it to the replacement module, ensuring it starts and runs without any additional security procedures. We will contact you with shipping instructions after your purchase.
Frequently Asked Questions
What is an ECM and what does it do?
The Engine Control Module (ECM) is your vehicle’s main computer. It takes data from sensors all over the engine and uses it to control critical functions like fuel injection timing, ignition spark, and variable valve timing to ensure optimal performance, fuel efficiency, and low emissions.
What is VIN programming and why is it essential?
VIN programming loads your vehicle’s specific software and calibrations onto the ECM. Every vehicle has slightly different options and parameters. Programming with your VIN ensures the module works seamlessly with your engine, transmission, and other electronic systems, preventing compatibility issues.
Is this a difficult part to install?
For most listed vehicles, the physical installation is straightforward, typically involving disconnecting the battery, unplugging a few electrical connectors, and unbolting the module. Since we program it beforehand, no special tools are needed for software setup. However, a ‘crankshaft variation relearn’ may be necessary, which can often be performed without a scan tool.
What happens after I place my order?
After you complete your purchase, you will need to send us your 17-digit VIN. You can typically add this in the notes at checkout or reply to your order confirmation email. Once we have your VIN, our technicians will program the module and ship it out to you, usually within one business day.
Why do you need my old module for a Camaro or Lacrosse?
The Camaro and Lacrosse of this era have a more complex immobilizer (anti-theft) system. The security data is unique to your original module and key set. To make the replacement plug-and-play, we must physically extract this data from your old module and transfer it to the new one. This service is included in the price.