Is Your Buick or Cadillac Running Poorly? The ECM Might Be the Culprit.
If your 2005-2008 Buick Allure, LaCrosse, or another compatible GM vehicle is suffering from persistent check engine lights, stalling, poor fuel mileage, or a frustrating no-start condition, a failing Engine Control Module (ECM) is a very likely cause. The ECM is the central computer of your vehicle’s powertrain, responsible for managing everything from fuel mixture and ignition timing to transmission shifts and emissions controls. When it fails, the symptoms can be widespread and difficult to diagnose, leading to costly repair shop visits and unnecessary parts replacement.
This listing is for a genuine, used OEM Engine Control Module, part number 12592124, which serves as a direct replacement for service numbers 12581144, 12588472, and 19260507. We take the guesswork and hassle out of the replacement process. Before this part ever leaves our facility, we program it with the latest official GM software, specifically matched to your vehicle’s 17-digit Vehicle Identification Number (VIN). This ensures a seamless, plug-and-play installation, saving you a trip to the dealership and their expensive programming fees.
From the Diagnostic Bay
We had a 2007 Cadillac CTS come in with a phantom misfire on cylinder 3 that no one could solve. The owner had replaced the spark plug, ignition coil, and even the fuel injector, but the P0303 code kept coming back under load. After scoping the injector and coil circuits, we noticed the signal from the ECM was erratic. The internal driver for that cylinder was failing intermittently inside the original computer. Instead of a complex board-level repair, we sourced a quality used ECM, programmed it to the car’s VIN, and had it shipped. The customer installed it in his driveway, performed the simple 10-minute security relearn, and the misfire was gone for good. It’s a perfect example of how the right part, correctly prepared, can solve even the most stubborn electronic issues.
Symptoms of a Failing Engine Control Module
- ✔ Persistent Check Engine Light (CEL) with various trouble codes.
- ✔ Engine stalling, stumbling, or misfiring for no apparent reason.
- ✔ A noticeable decrease in fuel economy.
- ✔ The vehicle cranks but refuses to start.
- ✔ Harsh or erratic shifting from the automatic transmission.
- ✔ Loss of power or sluggish acceleration.
- ✔ Inability for diagnostic scan tools to communicate with the module.
Why Choose Our Pre-Programmed 2005-2008 Allure ECM?
Choosing the right replacement part is critical. Our process is designed to provide you with a reliable and straightforward solution. This isn’t just a used part pulled from a yard; it’s a fully prepared component ready to restore your vehicle’s functionality. By providing us with your VIN during checkout, you ensure that the module you receive has the correct calibration files for your specific engine, transmission, and emissions equipment. This is the key to avoiding compatibility issues and ensuring your vehicle runs exactly as the manufacturer intended.
Guaranteed Compatibility
This ECM is a direct fit for a range of General Motors vehicles. Please verify your part number or match your vehicle from the list below:
- Buick Allure: 2005-2008 (3.6L)
- Buick LaCrosse: 2005-2008 (3.6L)
- Buick Rendezvous: 2004-2006 (3.6L)
- Cadillac CTS: 2004-2007 (Base models)
- Cadillac SRX: 2004-2006 (3.6L)
This module replaces the following service part numbers: 12581144, 12588472, 12592124, 19260507.
Frequently Asked Questions
Do I need to have this computer programmed by a dealer?
No. We handle all the programming for you before we ship the part. We use your VIN to load the correct GM software, making it ready for installation right out of the box.
What information do you need from me?
After you complete your purchase, you will need to provide us with your vehicle’s 17-digit VIN. This is crucial for us to program the module correctly for your specific car.
Is this a new part?
This is a high-quality, tested, genuine OEM part that has been sourced from a salvaged vehicle. This ensures OEM fitment and reliability without the new part price tag.
Will this fix my car’s problem for sure?
This part is a guaranteed solution for a faulty ECM. However, it’s essential that your vehicle has been properly diagnosed. This module will not fix problems related to other faulty sensors or mechanical issues.
Is any special procedure needed after I install it?
In many cases, a simple security relearn procedure is required for the vehicle to recognize the new ECM. This typically involves turning the key to the ‘ON’ position for 10-12 minutes and can be done without any special tools. We can provide instructions for this common procedure.
Where can I find my VIN?
Your VIN is located on a tag on the driver’s side of the dashboard (visible through the windshield), on the driver’s side door jamb sticker, and on your vehicle’s registration and insurance documents.