Restore Your Cadillac’s Precision Performance
Is your 2006 Cadillac STS suffering from frustrating and unpredictable issues like stalling, a persistent check engine light, rough idling, or a complete no-start condition? These are classic signs of a failing Engine Control Module (ECM), the central computer that governs your vehicle’s performance. Don’t let a faulty ECM compromise the sophisticated driving experience you expect. This direct-replacement ECM is the definitive solution to restore your vehicle’s power, reliability, and smooth operation, arriving programmed and ready for installation.
Common Symptoms & Your Solution
A failing ECM can manifest in numerous ways, often leading to a confusing diagnosis. If you’re experiencing any of the following, a replacement is likely the answer:
- Illuminated Check Engine Light: Often with communication-related Diagnostic Trouble Codes (DTCs) like P0601, P0602, or P0606.
- Engine Performance Problems: Stuttering, hesitation during acceleration, reduced power, and poor fuel economy.
- Starting Issues: The engine cranks but won’t start, or it starts and immediately stalls.
- Erratic Transmission Shifting: The ECM plays a key role in communicating with the transmission controller, and a failure can cause harsh or incorrect shifts.
This unit is the reliable fix for these issues. We take the guesswork out of the repair by programming the module with the latest GM software updates specifically for your car’s Vehicle Identification Number (VIN) before it ships. This ensures all systems communicate correctly, restoring the factory-intended performance and functionality of your 2006 Cadillac STS engine control module 12603530.
Features & Benefits
- ✔ Plug & Play Installation: Arrives pre-programmed to your vehicle’s VIN. In most cases, this eliminates the need for an expensive trip to the dealership for programming.
- ✔ Optimized Performance: Flashed with the newest official GM software updates to ensure peak fuel efficiency, emissions compliance, and engine performance.
- ✔ Guaranteed Compatibility: A genuine OEM component, ensuring a perfect fit and seamless communication with your Cadillac’s existing electronic systems.
- ✔ Cost-Effective Solution: Get the quality and reliability of a dealer-level repair without the exorbitant cost and hassle.
- ✔ Peace of Mind: This unit is backed by our one-year replacement warranty.
Expert Insight: The Importance of VIN-Specific Programming
For a sophisticated vehicle like the Cadillac STS, the ECM is more than just an engine controller—it’s the hub of a complex network. VIN-specific programming is not just a convenience; it’s critical. This process correctly configures the module for your vehicle’s specific options, transmission type, and, most importantly, the anti-theft system (VATS/Passlock). Using a generic or non-programmed module will almost certainly result in a no-start condition or major operational flaws. By providing us with your VIN, you ensure the 2006 Cadillac STS engine control module 12603530 we send you is a true one-to-one replacement, ready to integrate perfectly and get you back on the road safely.
Frequently Asked Questions
How do I provide my VIN for programming?
After you complete your purchase, you will receive instructions on how to send us your vehicle’s 17-digit VIN. We cannot ship your part until we receive this information, as the programming is a critical step in the process.
Will this ECM require any additional programming after installation?
Our goal is a plug-and-play installation. However, in some GM vehicles, a security relearn procedure (also known as a key relearn or VATS relearn) may be necessary. This is a simple procedure that can typically be done without special tools and takes about 30 minutes. Instructions are widely available online or in service manuals.
Is this a difficult part to install?
The physical installation is generally straightforward for someone with basic mechanical skills. The ECM on the 2006 STS is located on the driver’s side frame rail. It involves disconnecting the battery, unplugging the electrical connectors, and unbolting the module. Always disconnect the battery before beginning work on any electronic components.
How can I be sure this will fix my car’s problem?
While this 2006 Cadillac STS engine control module 12603530 is the solution for the symptoms listed, we always recommend a proper diagnosis by a qualified mechanic. This ensures you are replacing the correct part and avoids unnecessary expenses. Check for issues with wiring, grounds, and sensors before condemning the ECM.
What do the different service numbers mean?
The listed service numbers (e.g., 12590032, 12602044) are all hardware-compatible versions of this ECM. GM often updates part numbers over time. As long as your original part number is on our list, this unit will be a correct and functional replacement once programmed to your VIN.