Restore Peak Performance to Your GM 3.6L V6
Is your 2010-2011 Buick LaCrosse, Cadillac CTS, or Chevy Traverse running rough, stalling, or displaying a persistent check engine light? These are classic signs of a failing Engine Control Module (ECM). The ECM is the central computer of your vehicle, responsible for managing everything from fuel injection and ignition timing to emissions controls and transmission shifting. When it falters, the entire vehicle’s performance and reliability are compromised. This replacement ECM, part number 12617230, is the definitive solution to restore your vehicle’s factory operation and get you back on the road with confidence.
Common Failure Symptoms
A failing ECM can manifest in numerous ways. If you’re experiencing any of the following issues, a faulty engine computer could be the culprit:
- ✔ Persistent Check Engine Light (CEL) with various trouble codes.
- ✔ Engine stalling or shutting off unexpectedly while driving.
- ✔ Noticeable decrease in fuel economy.
- ✔ Engine misfires, rough idling, or hesitation during acceleration.
- ✔ Difficulty starting the engine or a complete no-start condition.
- ✔ Communication errors when trying to use a diagnostic scan tool.
- ✔ Harsh or erratic automatic transmission shifting.
- ✔ Failure to pass state emissions testing.
Understanding Your 2010-2011 LaCrosse ECM Replacement
This isn’t just a part in a box; it’s a comprehensive solution. We take the guesswork out of the repair by pre-programming this module specifically for your vehicle. When you place your order, you provide us with your vehicle’s 17-digit Vehicle Identification Number (VIN). Our technicians use this VIN to access the latest, most stable software updates directly from General Motors. The module is then flashed with this specific calibration, ensuring it communicates perfectly with your vehicle’s other systems right out of the box. This critical programming step ensures proper engine function, transmission strategy, and emissions compliance.
Important Note for LaCrosse and Camaro Owners: For these specific models, the factory anti-theft system (immobilizer) data is stored within the original ECM. To provide a true plug-and-play experience and avoid costly dealer relearn procedures, we require you to send us your original module. We will professionally extract the immobilizer information and program it into your new ECM. This makes the installation seamless, allowing your vehicle to start and run without any additional security procedures.
Wide-Ranging GM 3.6L Compatibility
This module is a direct replacement for multiple part numbers, including 19300015, 19300014, 12617230, 12636355, and 12635019. It is engineered to fit a variety of popular GM vehicles equipped with the 3.6L V6 engine:
- 2010-2011 Buick LaCrosse (LH engine compartment)
- 2010-2011 Buick Allure (LH engine compartment)
- 2010-2011 Buick Enclave (behind fan shroud)
- 2010-2011 Cadillac CTS (RH front engine compartment)
- 2010-2011 Cadillac STS (RH engine)
- 2010-2011 Chevrolet Camaro (3.6L)
- 2010-2011 Chevrolet Traverse (behind fan shroud)
- 2010-2011 GMC Acadia (behind fan shroud)
- 2010 Saturn Outlook (behind fan shroud)
Frequently Asked Questions
What is an ECM and what does it do?
The ECM, or Engine Control Module, is your car’s main computer. It controls the engine’s fuel delivery, spark timing, and emissions systems to ensure optimal performance, fuel efficiency, and low emissions.
Do I need to program this module?
No, we handle all the programming for you before shipment. We use your vehicle’s VIN to load the correct GM factory software and updates, so it’s ready for installation when you receive it.
Why do you need my VIN?
Your Vehicle Identification Number (VIN) allows us to access the exact factory calibration file for your car’s specific options, engine, and transmission. This ensures the ECM works perfectly and communicates with all other modules in your vehicle.
Why do I need to send my old ECM for a LaCrosse or Camaro?
For the 2010-2011 LaCrosse and Camaro, the vehicle’s unique anti-theft security key data is stored in the original ECM. By transferring this data to the new module, we make the part truly plug-and-play, preventing a no-start condition and saving you a trip to the dealer for expensive key relearning procedures.
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 important to have a proper diagnosis to confirm the ECM is the root cause and not a separate sensor or wiring problem.
Is this a difficult part to install?
Installation is generally straightforward for someone with basic mechanical skills. It involves disconnecting the battery, unplugging the electrical connectors, and unbolting the old module to swap in the new one. The location varies by model, as noted in our fitment list.