Is your Cadillac or Buick experiencing erratic behavior, a persistent check engine light, or a frustrating no-start condition? A failing Engine Control Module (ECM) is often the culprit, leaving you stranded and facing a costly trip to the dealership. This isn’t just an inconvenience; it’s a disruption to your life. We provide the definitive solution: a reliable, tested, used ECM, professionally programmed to your vehicle’s specific VIN, making your repair straightforward and getting you back behind the wheel with confidence.
Common Symptoms & Your Solution
A faulty ECM can manifest in numerous ways, often mimicking other component failures. If you’re experiencing any of the following, this pre-programmed module is your solution:
- Persistent Check Engine Light (CEL) with communication error codes (e.g., P0601, P0606).
- Engine stalling, sputtering, or misfiring.
- Drastic decrease in fuel economy.
- Complete no-start or intermittent starting issues.
- Transmission shifting problems or harsh engagement.
- Other modules on the vehicle not communicating with the engine computer.
Instead of wrestling with a blank module that requires expensive dealer-only tools, this unit arrives ready for installation. This is the most efficient way to restore your vehicle’s performance and eliminate those troublesome electronic gremlins. The core of your car’s brain is its ECM, and our expertly programmed 2004-2007 Cadillac CTS ECM 12592124 ensures it operates exactly as the factory intended.
Features & Benefits
- โ VIN-Programmed for You: We flash the unit with the latest GM software using your vehicle’s VIN. This ensures perfect compatibility with your car’s specific options and security system, eliminating the need for a trip to the dealer.
- โ Plug-and-Play Installation: Because the programming is done before we ship, installation is as simple as swapping the part. No special tools or software required.
- โ Cost-Effective Repair: Get a fully functional, programmed computer for a fraction of the cost of a new unit from a dealership.
- โ Guaranteed Compatibility: This ECM, part number 12592124, also directly replaces service numbers 12581144, 12588472, and 19260507, covering a wide range of Cadillac and Buick models.
- โ Restored Performance: Corrects issues with fuel mixture, spark timing, and transmission control to bring back the smooth, reliable performance you expect from your vehicle.
- โ Peace of Mind: This unit is backed by our one-year replacement warranty.
Expert Insight: Why VIN Programming is Non-Negotiable
In vehicles from this era, the ECM is more than just an engine controller; it’s the central hub of a complex communication network. It’s linked to the anti-theft system (Passlock/VATS), transmission, ABS, and body control module. Simply installing a used, non-programmed ECM will almost always result in a no-start condition because the security credentials won’t match. Our VIN programming service isn’t just a convenienceโit’s the essential step that makes the part work. We handle this complex digital handshake for you, so when your part arrives, it’s recognized by your vehicle as the original, allowing for immediate startup and proper function.
Don’t let a bad computer keep your car off the road. By ordering this pre-programmed 2004-2007 Cadillac CTS ECM 12592124, you are choosing a smart, reliable, and affordable path to getting your vehicle back in top condition. Simply provide your VIN during checkout, and let our experts handle the rest.
Frequently Asked Questions
What is an ECM and what does it do?
The Engine Control Module (ECM), also known as the engine computer, is the brain of your vehicle’s engine. It controls critical functions like fuel injection, ignition timing, and emissions systems to ensure optimal performance, fuel efficiency, and reliability.
Is this ECM ready to install when it arrives?
Yes! This is the key benefit of our service. We program the ECM to the specific Vehicle Identification Number (VIN) you provide. This makes it a true plug-and-play part, requiring no further programming or trips to a mechanic for software setup.
Where do I find my vehicle’s VIN?
Your VIN is a 17-digit number located on a tag on the driver’s side of the dashboard (visible through the windshield), on the driver’s side door jamb sticker, or on your vehicle’s registration and insurance documents.
Will this part fit other vehicles besides the Cadillac CTS?
Yes, this ECM is compatible with several GM models from the same era that used the 3.6L engine, including the Buick Allure, LaCrosse, Rendezvous, and Cadillac SRX. Please check the fitment list on this page to confirm compatibility with your specific year and model.
What if my old ECM has a different service number on it?
That is very common. This ECM, part number 12592124, is the correct hardware replacement for several service numbers, including 12581144, 12588472, and 19260507. As long as your vehicle is on our compatibility list, this unit will work perfectly once programmed to your VIN.
Is any additional setup required after installation?
In most cases, no additional setup is needed. However, some vehicles may require a simple, tool-free Case Relearn or security relearn procedure, which can typically be done in your driveway. We can provide instructions for this if necessary.