Restore Your Vehicle’s Performance and Reliability
Is your Cadillac, Buick, or GM vehicle suffering from frustrating issues like a persistent Check Engine Light, poor fuel economy, intermittent stalling, or a complete no-start condition? These are classic signs of a failing Engine Control Module (ECM). As a technician with over two decades of experience, I’ve seen firsthand how a faulty ECM can disrupt every aspect of your vehicle’s operation. This isn’t just an inconvenience; it’s a critical failure that compromises performance and safety. This listing offers a dependable and cost-effective solution: a genuine, used OEM Engine Control Module, part number 12592124, which also serves as a direct replacement for service numbers 12581144, 12588472, and 19260507.
The biggest hurdle when replacing an ECM has always been the expensive and time-consuming programming required at a dealership. We eliminate that step entirely. Before this module ships, we will flash it with the latest official GM software updates, perfectly matched to your vehicle’s specific Vehicle Identification Number (VIN). This means you receive a part that is ready for installation right out of the box, saving you hundreds of dollars and significant downtime. This is the ideal solution for the savvy DIYer looking to perform a professional-level repair at home, or for the independent shop needing a reliable, pre-programmed 2004-2006 SRX ECM to get a customer’s car running smoothly again.
From the Diagnostic Bay: The Ghost in the Machine
I remember a 2005 Cadillac CTS that came into the shop with a truly baffling problem. The owner complained of random stalling at traffic lights and occasional hard starting, but there were no consistent trouble codes—just a generic P0601 (Internal Control Module Memory Check Sum Error) that would appear and disappear. We checked grounds, wiring, and sensors for two days. Everything seemed fine. On a hunch, I monitored the live data stream from the ECM and noticed the short-term fuel trim values would suddenly go haywire right before a stall. We swapped in a known-good, programmed ECM, and the problem vanished instantly. The original ECM had an internal processor fault that only manifested under specific operating temperatures. It’s a perfect example of how a failing computer can mimic a dozen other issues, and why a reliable, correctly programmed replacement is the only true fix.
Is Your Vehicle Showing These ECM Failure Signs?
A failing engine computer can cause a wide range of symptoms. If you’re experiencing any of the following, your ECM could be the culprit. Look out for these common indicators:
- ✔ Persistent Check Engine Light (CEL) that won’t clear.
- ✔ Diagnostic Trouble Codes (DTCs) like P0601, P0606, or other processor-related faults.
- ✔ Unexplained drop in fuel efficiency.
- ✔ Engine stalling, stumbling, or hesitating during acceleration.
- ✔ Rough or erratic idling.
- ✔ Difficulty starting the engine or a complete no-start condition.
- ✔ Noticeable loss of power.
A Straightforward Guide to Installation
Installing your pre-programmed 2004-2006 SRX ECM is a manageable job for most DIY enthusiasts. While the exact location varies slightly by model (e.g., RH engine compartment on a CTS/SRX, lower air cleaner housing on an Allure/LaCrosse), the general process is similar. Always consult a repair manual for your specific vehicle.
- Safety First: Disconnect the negative terminal from your vehicle’s battery and wait a few minutes for the system to fully discharge.
- Locate the ECM: Find the Engine Control Module in your engine bay. It’s a metal box with large electrical connectors.
- Disconnect Connectors: Carefully release the locking tabs and unplug all electrical harnesses from the old ECM. Never force them.
- Remove the Old Module: Unbolt the old ECM from its mounting bracket and remove it from the vehicle.
- Install the New Module: Mount your new, pre-programmed ECM onto the bracket and secure the bolts.
- Reconnect Everything: Plug the electrical harnesses firmly into the new module until they click into place. Reconnect the negative battery terminal.
- Security Relearn (If Necessary): In some cases, a simple security relearn procedure may be required. This typically involves turning the key to the ‘ON’ position for 10-15 minutes. This allows the anti-theft system to recognize the new ECM.
Verified Vehicle Compatibility List
This ECM is guaranteed to be a direct fit for the following vehicles, provided the engine and options match. To ensure perfect compatibility, please provide your VIN upon purchase. This module replaces part numbers 12581144, 12588472, 12592124, and 19260507.
- Cadillac CTS: 2004-2006 (Base, with ID 12592124 or 19260507), 2007 (Base)
- Cadillac SRX: 2004-2006 (3.6L Engine)
- Buick Allure: 2005, 2006-2008 (3.6L Engine)
- Buick LaCrosse: 2005, 2006-2008 (3.6L Engine)
- Buick Rendezvous: 2004-2005 (with ID 19260507), 2006 (3.6L Engine)
By purchasing this pre-programmed 2004-2006 SRX ECM, you’re not just buying a part; you’re buying a complete, ready-to-install solution that restores your vehicle’s brain to perfect working order.
Frequently Asked Questions
Do I need to do any programming after I receive this ECM?
No. We program the module to your specific VIN before shipping. In most cases, it is a direct installation, though some vehicles may require a simple key relearn procedure that you can do yourself.
Is this a new part?
No, this is a high-quality, tested, and fully functional used OEM part sourced from a salvaged vehicle. This allows us to provide a genuine GM part at a significant saving compared to a new one from a dealer.
How do I provide my VIN?
After you complete your purchase, please send us a message with your vehicle’s 17-digit VIN. We cannot program and ship your module without it.
What if my original part number is 12581144?
This ECM, part number 12592124, is an authorized and compatible service replacement for part numbers 12581144, 12588472, and 19260507. It will function identically.
Where is the ECM located on my 2006 Cadillac SRX?
On the 2004-2006 Cadillac SRX with the 3.6L engine, the ECM is located in the right-hand (passenger side) front of the engine compartment.