Is Your Cadillac or GM Vehicle Acting Up?
There’s nothing more frustrating than a car that won’t run right. You’re dealing with a persistent Check Engine Light, the engine is stalling unexpectedly, or the transmission is shifting erratically. These aren’t just annoyances; they’re signs that the very brain of your engineโthe Engine Control Module (ECM)โmay be failing. When the ECM goes, it can feel like you’re chasing ghosts, replacing sensors and parts with no improvement. I’ve seen it in my shop hundreds of times: a perfectly good engine held back by a faulty computer.
The Direct Solution: A VIN-Programmed ECM
This isn’t just a replacement part; it’s a complete, ready-to-install solution. We are offering a genuine, used OEM Engine Control Module (Part #12592124) that is professionally programmed to your vehicle’s specific Vehicle Identification Number (VIN) before it ships. This crucial step ensures the module has the latest GM software updates and communicates flawlessly with your car’s other systems, just as it did from the factory.
A Technician’s Real-World Experience
“A customer’s 2006 Cadillac SRX with the 3.6L engine came in last month with a random misfire on cylinder 3 that no one could solve. They had already replaced the spark plug, ignition coil, and even the fuel injector. The misfire would come and go, driving them crazy. After hooking up my scope, I saw the command signal from the ECM to the coil was dropping out intermittently. The problem wasn’t the coil or the plug; it was a failing driver inside the original ECM. We installed one of our VIN-programmed modules, and the problem was solved instantly. It’s a classic case where chasing parts costs more than correctly diagnosing the computer first.”
Common Symptoms of a Failing ECM:
- โ Persistent Check Engine Light (CEL) with various codes
- โ Engine stalling, stumbling, or hesitating
- โ No-start or hard-starting conditions
- โ Poor fuel economy and reduced engine power
- โ Communication errors with diagnostic scan tools
- โ Harsh or incorrect automatic transmission shifting
Why Our Programmed 2004-2007 CTS ECM is the Smart Choice
Buying a used computer from a junkyard means you still have to pay a dealership hundreds of dollars for programming. Our process eliminates that expensive and time-consuming step. By providing your VIN at checkout, you receive a module that is truly plug-and-play. This used module has been carefully sourced and is ready to restore your vehicle’s proper function.
Simple Installation to Get You Back on the Road
- Safety First: Disconnect the negative terminal from your vehicle’s battery.
- Locate the ECM: On most of these vehicles, the ECM is found in the engine compartment (e.g., RH side on a CTS, under the air cleaner on an Allure/LaCrosse). Check your service manual for the exact location.
- Disconnect Connectors: Carefully unclip the wiring harness connectors from the old ECM. Inspect the pins for any corrosion or damage.
- Swap the Module: Unbolt and remove the old ECM. Mount the new module securely in its place.
- Reconnect Everything: Firmly plug the wiring harnesses into your new ECM. Reconnect the negative battery terminal.
- Final Step: Turn the key to the ‘ON’ position (without starting) for 10-15 seconds to allow the systems to initialize before starting the engine. Your vehicle is ready to go!
Guaranteed Compatibility and Fitment
This ECM, identified by part number 12592124, is a direct replacement for several service numbers, including 12581144, 12588472, and 19260507. It is confirmed to fit the following vehicles:
- Cadillac CTS: 2004-2007 (Base models)
- Cadillac SRX: 2004-2006 (3.6L)
- Buick Allure: 2005-2008 (3.6L)
- Buick LaCrosse: 2005-2008 (3.6L)
- Buick Rendezvous: 2004-2006 (3.6L)