Restore Peak Performance to Your GM 3.6L Vehicle
Is your 2004-2006 Cadillac SRX, CTS, or other compatible GM vehicle suffering from perplexing engine issues? A faulty Engine Control Module (ECM) is often the culprit behind problems like intermittent stalling, a persistent check engine light, poor fuel economy, or even a no-start condition. The ECM is the brain of your vehicle’s engine, responsible for managing everything from fuel injection and ignition timing to emissions control. When it fails, the symptoms can be widespread and difficult to diagnose. This listing offers a reliable, direct-fit solution: a genuine used ECM, part number 12581144, professionally programmed to your vehicle’s specific Vehicle Identification Number (VIN).
From the Diagnostic Bay
We had a 2005 Cadillac CTS come in that was driving the owner crazy. It had a random, intermittent misfire on cylinder 3 that would only happen after the engine was warm. The owner had already replaced the spark plug, ignition coil, and fuel injector for that cylinder twice, with no success. After hooking up our diagnostic tools, we noticed the injector pulse width for cylinder 3 was erratic. Instead of continuing to throw parts at it, we scoped the driver circuit inside the original ECM. Sure enough, the driver was failing under heat. We installed one of our VIN-programmed ECMs, performed the security relearn, and the car ran perfectly. It’s a classic case where the root cause was electronic, not mechanical, saving the customer from further unnecessary expenses.
Common Symptoms of a Failing ECM
- ✔ Check Engine Light is on with communication-related or internal processor fault codes (e.g., P0601, P0606).
- ✔ Engine stalls unexpectedly or for no apparent reason.
- ✔ Vehicle cranks but will not start.
- ✔ Noticeable decrease in fuel efficiency.
- ✔ Rough or erratic idling and poor engine performance.
- ✔ Transmission shifting issues or harsh engagement.
- ✔ Failure to communicate with diagnostic scan tools.
The Right Solution: A VIN-Programmed 2004-2006 SRX ECM
Don’t settle for a generic, non-programmed module that requires an expensive trip to the dealership for flashing and setup. Our process is designed to get you back on the road quickly and affordably. When you purchase this module, you simply provide us with your vehicle’s VIN. Our technicians will then flash the unit with the latest, most stable software updates directly from GM for your specific vehicle configuration. This ensures that the ECM works seamlessly with your engine, transmission, and all other onboard systems right out of the box. This is not a simple repair service; it is a fully programmed replacement module.
This ECM is a tested, used component sourced from a salvaged vehicle, offering a cost-effective alternative to a new part. It is compatible with several service numbers, including 12581144, 12588472, 12592124, and 19260507. It fits a range of popular GM vehicles equipped with the 3.6L V6 engine, such as:
- 2004-2006 Cadillac SRX (3.6L)
- 2004-2007 Cadillac CTS (Base)
- 2005-2008 Buick Allure (3.6L)
- 2005-2008 Buick LaCrosse (3.6L)
- 2004-2006 Buick Rendezvous (3.6L)
Please verify your part number or consult the fitment list to ensure compatibility. Upon installation, a standard security relearn procedure (also known as a key relearn or anti-theft relearn) will be required. This is a simple process that can typically be done in your driveway without any special tools and ensures the module communicates with your vehicle’s anti-theft system.
Frequently Asked Questions
What do I need to do after I purchase?
After completing your purchase, you must send us your vehicle’s 17-digit VIN. We cannot program and ship the module without it. You can add the VIN to the notes at checkout or send it to us in a message.
Is this ECM difficult to install?
The physical installation is straightforward for anyone with basic mechanical skills. It involves disconnecting the battery, unplugging the electrical connectors, and unbolting the old module. After installing the new one, you will need to perform a security relearn procedure, which typically takes about 30 minutes. Instructions can be easily found online for your specific model.
Will this fix my car’s problem?
This module will correct issues directly caused by a faulty ECM. It is crucial to have your vehicle properly diagnosed before purchasing. While this part resolves the common symptoms listed, it will not fix problems related to other faulty components like sensors, wiring, or mechanical parts.
What if my original part number is different?
This ECM is a direct replacement for several service numbers, including 12581144, 12588472, 12592124, and 19260507. As long as your vehicle is on the compatibility list and your original module has one of these numbers, this part will work correctly once programmed to your VIN.
Is this a new part?
No, this is a genuine, used OEM part that has been sourced from a salvaged vehicle. Each unit is inspected and tested before being programmed and shipped to ensure functionality.