Is your 2010-2011 Cadillac STS or other compatible GM vehicle suffering from perplexing issues like random stalling, a persistent check engine light, poor fuel economy, or a complete no-start condition? These are classic signs of a failing Engine Control Module (ECM). The ECM is the brain of your vehicle’s engine, responsible for managing everything from fuel injection and ignition timing to emissions controls and transmission shifting. When it begins to fail, it can cause a cascade of problems that are often difficult to diagnose.
This is a direct replacement Engine Control Module, part number 12617230, for your vehicle. To eliminate the guesswork and costly trips to the dealership, we pre-program this module specifically for your car using your Vehicle Identification Number (VIN). This ensures that the unit arrives with the latest, most stable software updates directly from GM, tailored to your vehicle’s exact specifications. This process restores factory performance and communication between all of your vehicle’s critical systems.
Common Symptoms of a Failing GM 3.6L ECM
- ✔ Persistent Check Engine Light (CEL) with various communication or sensor codes.
- ✔ Engine stalling, stumbling, or hesitating, especially under load.
- ✔ Unexplained drop in fuel efficiency.
- ✔ Harsh or erratic automatic transmission shifting.
- ✔ Vehicle entering ‘limp mode’ with reduced power.
- ✔ Complete no-start or intermittent starting issues.
- ✔ Misfire codes that don’t resolve after replacing plugs and coils.
From the Diagnostic Bay
We had a 2011 Buick Enclave come into the shop with a problem that had stumped two other mechanics. The customer complained of random stalling at stoplights and a check engine light that would come and go. They had already replaced the spark plugs, ignition coils, and even a camshaft position sensor, but the issue persisted. Our lead tech hooked up the scanner and saw multiple U-codes (communication codes) alongside a random misfire code. Instead of just chasing parts, he checked the main ECM connector for corrosion and tested the power and ground circuits to the module—they were perfect. This pointed directly to an internal failure in the ECM. We installed one of our VIN-programmed modules, performed the security relearn, and the Enclave ran perfectly. The customer was thrilled to finally have a reliable vehicle again after weeks of frustration. It’s a classic case where the root cause was the central computer, not the components it was monitoring.
Why Choose Our Pre-Programmed 2010-2011 Cadillac STS ECM?
Ordering a replacement ECM can be a confusing process. Our goal is to make it simple and effective. By providing your VIN during checkout, you are ensuring that the module you receive is a true plug-and-play solution. We handle the complex programming process, loading the correct software and calibrations for your specific engine, transmission, and emissions equipment. This saves you from having to have the vehicle towed to a dealer for expensive programming. This specific 2010-2011 Cadillac STS ECM is meticulously tested to ensure it meets or exceeds original equipment standards for reliability and performance.
Simple Installation Process
Once you receive your programmed module, the physical installation is straightforward. Disconnect the battery, locate your old ECM, unplug the electrical connectors, and unbolt it. Then, simply bolt the new module in place and reconnect everything. In most cases, you will need to perform a simple security relearn procedure (often called a VATS relearn) which can be done without any special tools. This procedure pairs the new ECM to your vehicle’s anti-theft system and typically involves a sequence of turning the key on and off. We include instructions to guide you through this final step.
Please Note for Camaro & LaCrosse Owners: Due to the specific immobilizer systems in the 2010-2011 Camaro and LaCrosse, a simple VIN flash is not enough. For a true plug-and-play experience, we require your original ECM to be sent to us. We will clone the essential immobilizer data from your old unit to the new one. We will contact you with shipping instructions after your purchase if you have one of these vehicles.
Guaranteed Fitment & Compatibility
This module is a direct replacement for several part numbers, ensuring wide compatibility. It will function correctly in the following vehicles equipped with the 3.6L V6 engine:
- Cadillac STS: 2010-2011 (3.6L)
- Cadillac CTS: 2010-2011 (3.6L)
- Buick LaCrosse / Allure: 2010-2011 (3.6L)
- Buick Enclave: 2010-2011
- Chevrolet Traverse: 2010-2011
- Chevrolet Camaro: 2010-2011 (3.6L)
- GMC Acadia: 2010-2011
- Saturn Outlook: 2010
Compatible Part Numbers: 19300015, 19300014, 12617230, 12636355, 12635019
Frequently Asked Questions
Do I need to do any programming myself?
No. We program the module with the latest GM software using the VIN you provide. The only step you may need to perform after installation is a simple security relearn procedure, which does not require any special tools. Instructions are included.
Where do I provide my VIN?
You can enter your vehicle’s 17-digit VIN during the checkout process. If you forget, we will contact you via email to request it before we can program and ship your part.
Is this a brand new part?
This is a high-quality, tested replacement part that is guaranteed to perform to OEM specifications. Each unit undergoes rigorous inspection and testing before being programmed and shipped.
What if I have a Camaro or LaCrosse?
For these specific models, we will need you to send us your original ECM to clone the immobilizer data. This is the only way to ensure a plug-and-play installation. We will contact you with instructions after you place your order.
What is your warranty policy?
This part comes with a standard warranty covering any defects in the module itself. Please refer to our website’s warranty page for complete details and duration.