Restore Peak Performance to Your GM Vehicle
Is your Cadillac STS, Buick Lacrosse, or Chevy Traverse running poorly? A persistent check engine light, erratic engine behavior, stalling, or a complete no-start condition can often be traced back to a failing Engine Control Module (ECM). The ECM is the brain of your vehicle’s engine, controlling everything from fuel mixture and ignition timing to transmission shifting. When it fails, it can cause a cascade of frustrating and difficult-to-diagnose problems. This fully programmed Engine Control Module, part number 12635019, is the definitive solution to get your vehicle back on the road and running like new.
Diagnosing and Solving with a Programmed 2010-2011 STS ECM
A faulty ECM can mimic a wide range of other component failures, leading to wasted time and money on unnecessary repairs. If you’ve replaced sensors and other parts without success, it’s time to consider the central processing unit. Our service eliminates the guesswork and the need for expensive dealership programming. We flash this module with the latest official GM software updates, tailored specifically to your vehicle using the VIN you provide. This ensures perfect compatibility and function right out of the box, restoring lost power, fuel economy, and reliability.
From the Diagnostic Bay
We had a 2011 Chevy Traverse in the shop that was driving the owner crazy. The vehicle would intermittently lose power and throw codes for the throttle body and multiple sensors. The owner had already replaced the throttle body twice at another shop. After confirming the wiring was intact, we suspected the ECM. The driver circuits inside the module that control the throttle were failing intermittently. We installed one of our VIN-programmed ECMs, and the problem was solved instantly. The customer was thrilled to have their reliable family vehicle back without any more guessing games. This is a classic case where the root cause was the computer, not the parts it was controlling.
Common Symptoms of a Failing GM 3.6L ECM
- ✔ Persistent Check Engine Light (CEL) with various, often inconsistent, trouble codes.
- ✔ Engine stalling, stumbling, or hesitating during acceleration.
- ✔ Rough or unstable idle.
- ✔ A complete no-start condition where the engine cranks but won’t fire.
- ✔ Poor fuel economy and reduced engine power.
- ✔ Communication errors with diagnostic scan tools.
- ✔ Seemingly random issues with automatic transmission shifting.
- ✔ False codes for sensors that have already been replaced.
Simple Process, Lasting Solution
Our goal is to make this repair as straightforward as possible. After you place your order, simply provide us with your vehicle’s 17-digit VIN. Our technicians will then program the ECM with the correct software for your exact make, model, and year. This process ensures that all engine parameters and security information are correctly configured, making installation a direct-fit replacement. For most models listed, this is a true plug-and-play solution. Please note the special immobilizer process for Camaro and Lacrosse models, which we will guide you through after your purchase.
Guaranteed Fitment For These Vehicles:
This ECM is a direct replacement for the following vehicles equipped with the 3.6L V6 engine:
- 2010-2011 Buick Lacrosse
- 2010 Buick Allure
- 2010-2011 Cadillac CTS
- 2010-2011 Cadillac STS
- 2010-2011 Chevrolet Camaro
- 2010-2011 Chevrolet Traverse
- 2010-2011 GMC Acadia
- 2010-2011 Buick Enclave
- 2010 Saturn Outlook
This module is compatible with part numbers: 19300015, 19300014, 12617230, 12636355, 12635019.
Frequently Asked Questions
How does the VIN programming work?
After you purchase the 2010-2011 STS ECM, you will need to provide us with your vehicle’s 17-digit Vehicle Identification Number (VIN). Our technicians use this number to access the official GM database and load the precise software and calibrations your specific vehicle requires. This ensures the module works seamlessly with your engine, transmission, and security system.
Is any additional programming required after installation?
For most vehicles listed, this module is a plug-and-play solution and will not require further programming. However, some vehicles may require a simple security relearn procedure, which can often be done without special tools. We include general instructions for this. We always recommend installation by a qualified mechanic to ensure all procedures are followed correctly.
Why do you need my old ECM for a Camaro or Lacrosse?
The Chevrolet Camaro and Buick Lacrosse of this era have a more complex anti-theft (immobilizer) system. To ensure a true plug-and-play experience and avoid costly dealership visits, we need to read specific security data from your original module and transfer it to the replacement one. We will provide instructions for this simple process after your purchase.
Will this fix my check engine light?
If the check engine light is caused by a faulty ECM, this part will resolve the issue. It’s crucial to ensure a proper diagnosis has been performed. This module will not fix problems related to other faulty mechanical or electrical components on the vehicle.
Where is the ECM located on my vehicle?
The location varies by model. On the Traverse, Acadia, Enclave, and Outlook, it’s typically behind the fan shroud. On the Lacrosse and Allure, it’s in the left-hand (driver’s side) engine compartment. For the CTS and STS, it is located in the right-hand (passenger side) front of the engine compartment. Always disconnect the battery before attempting to access or replace the ECM.