Restore Peak Performance to Your Vehicle
Is your Cadillac STS, or another compatible GM vehicle, suffering from perplexing issues like a persistent check engine light, erratic engine behavior, poor fuel mileage, or a complete failure to start? These are common indicators of a failing Engine Control Module (ECM), the central computer that manages your vehicle’s engine performance. This replacement ECM, part number 12590032, is the definitive solution to restore your vehicle’s reliability and drivability. It arrives at your door fully programmed to your specific Vehicle Identification Number (VIN), ensuring a seamless, plug-and-play installation without the need for an expensive trip to the dealership.
Is Your ECM Failing? Common Symptoms
- ✔ Persistent Check Engine Light (CEL) with communication or processor-related codes (e.g., P0601, P0606).
- ✔ Unexplained engine stalling, stumbling, or rough idling.
- ✔ Noticeable decrease in fuel economy.
- ✔ Hesitation or poor performance during acceleration.
- ✔ Automatic transmission shifting erratically or harshly.
- ✔ The engine cranks but refuses to start.
- ✔ Misfires occurring on multiple cylinders simultaneously.
The Advantage of a VIN-Programmed 2006 STS Engine Control Module
The ECM is not a one-size-fits-all component. It must be precisely calibrated to your vehicle’s specific engine, transmission, and factory options. Our professional programming service handles this critical step for you. When you provide your VIN during checkout, we flash the module with the latest, most stable software updates directly from GM. This process not only ensures perfect compatibility but can also resolve underlying software bugs that may have existed in your original unit. The result is a simple installation process: disconnect the battery, swap the modules, reconnect the battery, and perform any necessary security relearn procedure (often as simple as turning the key). You get a reliable, updated component that restores your vehicle’s factory performance.
This module is a direct replacement for a wide range of General Motors vehicles and is interchangeable with several service numbers, ensuring broad compatibility. Please verify your part number against our list below and consult the detailed fitment chart to confirm this is the correct part for your car or truck.
Interchangeable Part Numbers: 12590032, 12602044, 12603530, 12605843, 12607096, 12630457, 19210737
Frequently Asked Questions
How does the VIN programming service work?
After you place your order, you must provide us with your vehicle’s 17-digit VIN. Our technicians use this number to load the exact GM-certified software and calibrations for your specific car onto the module. This ensures it works perfectly out of the box.
Do I need to do anything special after installing this ECM?
In most cases, you will need to perform a security relearn procedure, also known as a CASE relearn or anti-theft relearn. This procedure syncs the new ECM with your vehicle’s security system and can typically be done without special tools. Instructions are widely available online for your specific model.
Is this a new or used part?
This is a high-quality, tested, and guaranteed functional used OEM part. Each unit is inspected and then programmed with the latest software to ensure reliability and performance that meets or exceeds the original factory specifications.
Where is the ECM located on my 2006 Cadillac STS?
On the 2006 Cadillac STS, the Engine Control Module is typically located on the driver’s side frame rail in the engine compartment. Always disconnect the vehicle’s battery before attempting to remove or install any electronic module.
What happens if I forget to provide my VIN?
We cannot ship your order without a VIN. The programming is essential for the part to function in your vehicle. We will contact you to request the VIN, but this will delay the shipment of your part.