Is Your GM 3.6L Vehicle Running Rough?
The Engine Control Module (ECM), often called the engine computer, is the electronic brain of your vehicle’s powertrain. It meticulously manages critical functions like fuel injection, ignition timing, emissions systems, and transmission shifting to ensure optimal performance, fuel economy, and reliability. When the ECM begins to fail, it can cause a cascade of confusing and frustrating problems, from a simple check engine light to a vehicle that won’t start at all. This is a common issue in vehicles like the Buick Allure, LaCrosse, and Cadillac CTS equipped with the 3.6L V6 engine, often due to years of exposure to engine bay heat and vibrations.
Common Symptoms of a Failing ECM
If your vehicle is experiencing any of the following issues, a faulty engine computer could be the culprit. Look out for these warning signs:
- ✔ Persistent Check Engine Light (CEL) with codes like P0601, P0606, or other internal processor faults.
- ✔ Engine stalling or shutting off unexpectedly while driving.
- ✔ Rough or erratic idling.
- ✔ A no-start condition where the engine cranks but won’t fire up.
- ✔ Noticeable decrease in fuel efficiency.
- ✔ Poor engine performance, hesitation, or misfires.
- ✔ Inability to communicate with the ECM using a diagnostic scan tool.
- ✔ Issues with the automatic transmission shifting harshly or at the wrong times.
The Direct-Fit Solution: A Programmed 2005-2008 Buick Allure ECM
Don’t let a faulty computer keep your car off the road. This is a genuine, used OEM Engine Control Module that has been thoroughly tested and is ready for installation. The most critical part of the process is our professional programming service. Before we ship the part, we flash it with the latest GM-certified software updates and program it specifically to your vehicle’s unique Vehicle Identification Number (VIN). This ensures that the ECM communicates flawlessly with the other modules in your car, such as the Body Control Module (BCM) and the anti-theft system (Passlock/VATS), making the installation process as simple as possible.
This module is a direct replacement for service numbers 12581144, 12588472, 12592124, and 19260507. By providing your VIN upon purchase, you receive a part that is tailored to your vehicle’s exact specifications, eliminating the need for expensive dealership programming.
Guaranteed Compatibility
This ECM is a confirmed fit for the following vehicles equipped with the 3.6L V6 engine. Please verify your service number to ensure a perfect match.
- Buick Allure: 2005, 2006, 2007, 2008 (3.6L)
- Buick LaCrosse: 2005, 2006, 2007, 2008 (3.6L)
- Buick Rendezvous: 2004, 2005, 2006 (3.6L)
- Cadillac CTS: 2004, 2005, 2006, 2007 (Base, 3.6L)
- Cadillac SRX: 2004, 2005, 2006 (3.6L)
Frequently Asked Questions
Is this ECM ready to install right out of the box?
Yes! Because we program the module to your vehicle’s VIN before shipping, it is ready for installation. In some cases, a simple security relearn procedure may be required, which takes about 30 minutes and does not require any special tools. We can provide instructions for this.
What information do you need from me?
After you complete your purchase, you must provide us with your vehicle’s 17-digit VIN. This is essential for us to load the correct software and operating system for your car’s specific configuration.
Where can I find my VIN?
Your VIN can be found on a metal plate on the driver’s side dashboard (visible through the windshield), on the driver’s side door jamb sticker, or on your vehicle’s registration and insurance documents.
Is this a new part?
No, this is a high-quality, tested, and fully functional used part sourced from a salvaged vehicle. This allows us to offer a reliable, cost-effective solution compared to a new part from a dealership.
What if my original part number is slightly different?
This ECM replaces multiple service numbers, including 12581144, 12588472, 12592124, and 19260507. As long as your vehicle is on the compatibility list, this module will work once programmed to your VIN. If you are unsure, please contact us with your VIN and original part number.