Restore Peak Performance to Your GM 3.6L V6
Is your Buick LaCrosse, Cadillac CTS, or other compatible GM vehicle suffering from perplexing engine issues? A faulty Engine Control Module (ECM) is often the culprit behind problems like a persistent check engine light, rough idling, poor fuel economy, or even a no-start condition. The ECM is the central computer of your vehicle, responsible for managing everything from fuel injection and ignition timing to transmission shifting. When it fails, the entire system’s performance and reliability are compromised. This pre-programmed ECM, part number 12592124, is the definitive solution to get your vehicle running smoothly and efficiently again.
This is a genuine, used OEM component sourced from a salvaged vehicle, ensuring factory-grade quality and fitment. Unlike generic aftermarket parts that can cause compatibility headaches, this unit is designed specifically for your vehicle’s architecture. To make the replacement process as seamless as possible, we program the module to your specific Vehicle Identification Number (VIN) before it ships. This critical step loads the latest GM software updates and ensures all vehicle-specific parameters are correctly configured, eliminating the need for an expensive trip to the dealership for programming.
From the Diagnostic Bay
We had a 2007 Cadillac SRX come in with an issue that had stumped two other shops. The car would run fine for about 20 minutes, then suddenly stall and refuse to restart for an hour. There were no consistent trouble codes, just a vague U-code for lost communication every so often. We checked fuel pressure, ignition components, and wiring harnesses for hours. On a hunch, we monitored the ECM’s internal temperature data. We found that as the module heated up with the engine, its processor would start failing, causing the shutdown. We replaced it with a VIN-programmed ECM just like this one, and the customer called a week later overjoyed that their car was finally reliable again. It’s a classic example of how a failing computer can create ghost-like symptoms that are impossible to trace without pinpointing the source.
Is a Failing 2005-2008 LaCrosse ECM Causing Your Problems?
The symptoms of a failing engine computer can be varied and often mimic other component failures, making diagnosis tricky. If your vehicle is experiencing any of the following, a faulty ECM could be the root cause. Replacing your module can restore lost power, improve fuel efficiency, and ensure your vehicle operates as the manufacturer intended.
Common Symptoms of a Failing ECM
- ✔ Persistent Check Engine Light (CEL) that won’t clear or returns immediately.
- ✔ Engine stalling, stumbling, or misfiring for no apparent reason.
- ✔ Vehicle refuses to start, even with a good battery and starter.
- ✔ Noticeable decrease in fuel economy.
- ✔ Poor engine performance, hesitation, or lack of power.
- ✔ Harsh or erratic automatic transmission shifting.
- ✔ Communication errors with diagnostic scan tools.
- ✔ Other warning lights on the dashboard may illuminate intermittently.
Guaranteed Compatibility and Simple Installation
This ECM is a direct replacement for several GM service numbers, ensuring broad compatibility across multiple models. Please verify that your vehicle and original part number are listed below. After purchase, simply provide us with your VIN, and our technicians will handle the programming. While installation is straightforward for those with mechanical experience, we always recommend professional installation. In many cases, a simple security relearn procedure may be required after the new module is installed, which can be performed without special tools.
This ECM is a direct replacement for the following part numbers:
- 12581144
- 12588472
- 12592124
- 19260507
Fitment for the following vehicles (3.6L V6 Engine):
- 2005-2008 Buick LaCrosse
- 2005-2008 Buick Allure
- 2004-2007 Cadillac CTS (Base)
- 2004-2006 Cadillac SRX
- 2004-2006 Buick Rendezvous
Don’t let a faulty computer keep you off the road. By choosing this quality, VIN-programmed 2005-2008 LaCrosse ECM, you are getting a reliable and cost-effective solution to complex engine management problems. Restore your vehicle’s dependability and driving pleasure by ordering today.
Frequently Asked Questions
Do I need to do anything after I purchase?
Yes. After you place your order, you must send us your vehicle’s 17-digit VIN. We cannot ship the part until we have programmed it with your specific vehicle information.
Is this part difficult to install?
The physical installation is typically straightforward, involving disconnecting the battery and swapping the module. However, a security relearn or ‘anti-theft’ procedure is often required. We recommend professional installation if you are not familiar with this process.
Is this a new part?
No, this is a high-quality, tested, and fully functional used part that has been sourced from a salvaged vehicle. It is then programmed with the latest GM software for your specific VIN.
Will this fix my car’s problem for sure?
This part will resolve any issues directly caused by a faulty ECM. However, it’s crucial to have your vehicle properly diagnosed. This part will not fix problems related to other faulty sensors, wiring, or mechanical components.
What is your warranty policy?
We stand behind our parts. This ECM comes with a standard warranty against defects in the part itself. Please refer to our website’s warranty page for complete details and conditions.