The Brain of Your Vehicle: Restoring Peak Performance
Is your 2010-2011 Cadillac STS, or another GM vehicle equipped with the powerful 3.6L V6, experiencing perplexing issues like stalling, a persistent Check Engine Light, or a complete no-start condition? The problem often lies with the Engine Control Module (ECM), the central computer responsible for managing everything from fuel injection and ignition timing to transmission shifting and emissions control. When it fails, the entire vehicle’s performance and reliability are compromised. This replacement Engine Control Module, part number 19300015, is the definitive solution to restore your vehicle’s factory-level operation and driving confidence.
From the Diagnostic Bay
We recently had a 2011 Buick Enclave come into the shop with an intermittent stalling problem that had other mechanics stumped. The owner had already replaced the fuel pump and a couple of sensors with no success. After hooking up our diagnostic tools, we noticed intermittent communication loss with the ECM. A thorough check of the wiring and connectors revealed no issues. We suspected an internal failure in the module itself. After installing a VIN-programmed ECM just like this one, the Enclave ran perfectly. The internal processor was failing under heat, a common issue. This experience underscores the importance of correctly identifying the root cause, and how a properly prepared module is the key to a lasting repair.
Common Symptoms of a Failing GM 3.6L ECM
A faulty ECM can manifest in numerous ways. If you’re noticing any of the following issues, it’s a strong indicator that your engine’s computer may need replacement:
- ✔ Check Engine Light: The most obvious sign, often with communication-related trouble codes like P0601, P0606, or U-codes.
- ✔ Engine Stalling or Misfiring: The engine may stall unexpectedly while driving or at idle, and you might experience rough running or misfires.
- ✔ No-Start Condition: The engine cranks but refuses to start because the ECM isn’t properly controlling the fuel and spark.
- ✔ Poor Fuel Economy: An inefficiently running engine, caused by incorrect data from the ECM, will consume more fuel than usual.
- ✔ Erratic Transmission Behavior: The ECM works with the Transmission Control Module (TCM). A failing ECM can cause harsh shifting, or the transmission may get stuck in one gear (limp mode).
- ✔ Failure to Communicate: Your mechanic’s diagnostic scan tool may be unable to establish a connection with the ECM.
The Definitive Solution: A VIN-Programmed 2010-2011 STS ECM
This isn’t just a replacement part; it’s a comprehensive, ready-to-install solution. We take the guesswork and additional expense out of the repair process. Before this module ships, we use your vehicle’s unique Vehicle Identification Number (VIN) to program it with the latest, most stable software updates directly from General Motors. This critical step ensures that the module is a perfect match for your vehicle’s specific configuration and options. By purchasing a pre-programmed 2010-2011 STS ECM, you avoid costly trips to the dealership for programming and complex security relearn procedures. For most compatible vehicles, installation is a straightforward plug-and-play process.
Guaranteed Compatibility and Fitment
This module is a direct replacement for a range of part numbers, ensuring wide compatibility across the GM family. It is guaranteed to fit and function correctly in the following vehicles equipped with the 3.6L V6 engine:
- Cadillac STS: 2010-2011 (Located in RH engine compartment)
- Cadillac CTS: 2010-2011 (Located in RH front engine compartment)
- Buick LaCrosse / Allure: 2010-2011 (Located in LH engine compartment)
- Chevrolet Camaro: 2010-2011
- Chevrolet Traverse: 2010-2011 (Located behind fan shroud)
- GMC Acadia: 2010-2011 (Located behind fan shroud)
- Buick Enclave: 2010-2011 (Located behind fan shroud)
- Saturn Outlook: 2010 (Located behind fan shroud)
This unit is compatible with part numbers: 19300015, 19300014, 12617230, 12636355, and 12635019. Providing your VIN during checkout is mandatory to ensure we deliver a perfectly matched and updated module for your exact vehicle.
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 enough for a plug-and-play installation. For these two models, we require you to send us your original ECM. We will then extract the unique immobilizer data and program it into the new module. This service is included in the price and ensures the new ECM will work seamlessly with your existing keys and security system without any additional procedures. We will contact you with shipping instructions for your old module after your purchase.
Frequently Asked Questions
What is VIN programming and why is it necessary?
VIN programming loads your vehicle’s specific software and calibrations onto the ECM. This is crucial because vehicles have different options (engine, transmission, emissions, security). Programming ensures the ECM works correctly with all other modules in your car, preventing compatibility issues and error codes.
Do I need to do anything else after installing this ECM?
For most listed models (excluding Camaro and LaCrosse), this is a plug-and-play part. You simply install it, and you’re ready to go. No additional dealership programming is required. For Camaro and LaCrosse, you must follow the process of sending in your old module first.
My original part number isn’t 19300015, but it’s on the compatible list. Will this work?
Yes. This module serves as a direct replacement for all listed part numbers (19300014, 12617230, 12636355, 12635019). We program it based on your VIN, so it will function identically to your original, but with the benefit of the latest software.
Why do I need to send my old ECM for a Camaro or LaCrosse?
These models have a more integrated immobilizer (anti-theft) system. The security data is unique to your specific vehicle and keys. To make the new ECM work, we must transfer this data from your old module to the new one. This makes the installation plug-and-play and avoids complex key reprogramming.
Is this a difficult part to install?
The physical installation is generally straightforward for someone with basic mechanical skills. It involves disconnecting the battery, unplugging the electrical connectors, and unbolting the old module. The location varies by model, as noted in the description. Always disconnect the battery’s negative terminal before starting any work.