Is Your Cadillac or GM Vehicle Acting Up?
If you’re dealing with frustrating issues like a persistent check engine light, erratic engine behavior, stalling, or a no-start condition, the problem might be the very brain of your engine: the Engine Control Module (ECM). The ECM is responsible for managing everything from fuel injection and ignition timing to transmission shifting and emissions. When it fails, it can cause a cascade of problems that are difficult to diagnose and can leave your vehicle unreliable or completely immobile. Don’t let a faulty computer keep you off the road. This replacement ECM is the reliable solution to restore your vehicle’s performance and dependability.
The Plug-and-Play Solution: Programmed to Your VIN
Replacing an ECM isn’t as simple as swapping out a battery. Modern vehicle computers are coded specifically to the vehicle’s Vehicle Identification Number (VIN) and its unique set of options. This unit takes the guesswork and expensive dealership trips out of the equation. When you purchase this ECM, we will flash it with the latest GM software updates and program it specifically to your car’s VIN. This ensures that it communicates perfectly with all the other modules in your vehicle, effectively making it a direct-fit, ready-to-install part. This is a genuine, used OEM part sourced from a salvaged vehicle, ensuring factory fit and function.
From the Diagnostic Bay
We once had a 2006 Buick LaCrosse with the 3.6L engine towed in. It had a no-start condition and the owner was convinced the ECM was fried after getting a ‘no communication’ error from a cheap code reader. Before ordering a replacement, we did a simple check. We found that the main ignition-fed power wire to the ECM fuse block was corroded and barely making contact. After cleaning the connection, the car started right up. Moral of the story: Always confirm the ECM is receiving proper power and has solid ground connections before replacing it. A simple voltage check can save you time and money.
Is Your Engine Computer Failing?
Look out for these common symptoms that point to a faulty ECM:
- ✔ Persistent Check Engine Light (CEL) that won’t clear or returns immediately.
- ✔ Engine misfires, stumbles, or runs rough for no apparent reason.
- ✔ The vehicle cranks but refuses to start.
- ✔ A noticeable and sudden drop in fuel economy.
- ✔ Inconsistent or harsh automatic transmission shifting.
- ✔ Loss of communication with the OBD-II port when using a scan tool.
- ✔ Unexplained electrical issues or warning lights on the dashboard.
Your Direct-Fit 2004-2007 CTS ECM Solution
This module, part number 12592124, is a direct replacement for several original service numbers, including 12581144, 12588472, and 19260507. It is guaranteed to be compatible with the following vehicles and options:
- Cadillac CTS: 2004-2007 (Base models)
- Cadillac SRX: 2004-2006 (3.6L engine)
- Buick Allure: 2005-2008 (3.6L engine)
- Buick LaCrosse: 2005-2008 (3.6L engine)
- Buick Rendezvous: 2004-2006 (3.6L engine)
By providing your VIN, you ensure this 2004-2007 CTS ECM is correctly configured for your specific vehicle, eliminating compatibility issues. After installation, some vehicles may require a simple security relearn procedure (often detailed in the owner’s manual) or a Crankshaft Position Sensor (CASE) relearn, which can be performed by any qualified technician with a professional scan tool.
Frequently Asked Questions
Why does this ECM need to be programmed to my VIN?
Programming the ECM with your VIN ensures it works with your vehicle’s specific anti-theft system, options, and other electronic modules. An unprogrammed module will not allow the vehicle to start or run correctly.
How do I provide my VIN?
After you complete your purchase, please send us a message with your 17-digit VIN. We cannot ship the part until we receive this information, as the programming is the first step in our fulfillment 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. This allows us to offer a reliable, OEM-quality part at a significant saving compared to a new dealership part.
Will I need to do anything else after installing it?
In many cases, the vehicle will start and run immediately. However, some GM vehicles may require a security relearn procedure, which typically involves a sequence of key turns. A Crankshaft Position Sensor (CASE) relearn may also be needed to clear a specific trouble code, which can be done with a capable bi-directional scan tool.
How can I be sure this part will fix my vehicle?
While this ECM is a direct solution for a failed module, it’s crucial that your vehicle has been properly diagnosed. We recommend confirming that the ECM’s power and ground circuits are intact before ordering, as wiring issues can mimic ECM failure.