Is Your Cadillac or GM Vehicle Running Rough?
The Engine Control Module (ECM), often called the ECU, is the electronic brain of your vehicle’s engine. It meticulously manages everything from fuel injection and ignition timing to emissions controls and transmission shifting. When the ECM in your 2008-2009 Cadillac STS, CTS, or other compatible GM 3.6L vehicle begins to fail, it can cause a cascade of confusing and frustrating problems. From a persistent check engine light to a car that won’t start at all, a faulty ECM can bring your daily drive to a halt. This isn’t just an inconvenience; it’s a critical component failure that requires an immediate and precise solution.
Common Symptoms of a Failing ECM
- ✔ Persistent Check Engine Light (CEL) that won’t clear, often with communication-related codes (U-codes) or internal processor fault codes (P06xx).
- ✔ Engine performance issues such as stalling, hesitation, rough idling, or misfires.
- ✔ Reduced fuel economy and poor engine power.
- ✔ The vehicle cranks but refuses to start.
- ✔ Automatic transmission shifting problems or harsh engagement.
- ✔ Seemingly random electrical issues or warning lights on the dashboard.
- ✔ Inability to communicate with the ECM using a diagnostic scan tool.
The Direct-Fit Solution: A Pre-Programmed 2008-2009 STS Engine Control Module
Don’t let a faulty computer keep your car off the road. This genuine replacement Engine Control Module, part number 12630594, is the definitive solution for your vehicle. What sets our service apart is the crucial programming step we handle for you. Before this module ships, we flash it with the latest, most stable software updates directly from GM, tailored specifically to your vehicle’s unique Vehicle Identification Number (VIN). This eliminates the need for expensive dealership programming or specialized tools. It arrives at your door ready for a straightforward, plug-and-play installation, restoring the precise engine management your vehicle had when it left the factory.
This module is a direct replacement for several part numbers, ensuring wide compatibility. It is compatible with the following part numbers: 12623325, 12628387, 12605672, 12630594, and 19300016.
Vehicle Compatibility:
This ECM is confirmed to fit the following vehicles with the specified options:
- 2008-2009 Cadillac STS: Electronic Control Module; (RH engine), 3.6L
- 2008-2009 Cadillac CTS: Electronic Control Module; (RH front engine compartment), 3.6L, VIN V (8th digit)
- 2009 GMC Acadia: Electronic Control Module; (behind fan shroud)
- 2009 Chevrolet Traverse: Electronic Control Module; (behind fan shroud)
- 2009 Saturn Outlook: Electronic Control Module; (behind fan shroud)
- 2009 Buick Enclave: Electronic Control Module; (behind fan shroud)
By purchasing this 2008-2009 STS Engine Control Module, you are getting a reliable part that solves the root cause of your vehicle’s electronic issues and restores its performance and dependability. Simply provide your VIN at checkout, and we’ll handle the rest.
Frequently Asked Questions
Do I need to get this module programmed by a dealer?
No. We program the module to your vehicle’s specific VIN before shipping it to you. It will arrive ready to install, requiring no additional programming.
Where do I find my vehicle’s VIN?
Your 17-digit VIN can be found 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.
What happens if I forget to provide my VIN?
We cannot ship the module without your VIN, as the programming is essential for it to function in your vehicle. We will contact you to retrieve the VIN, which may delay your order.
Is this a simple plug-and-play installation?
Yes, for the listed compatible vehicles. Once you receive the pre-programmed module, you simply need to disconnect the battery, remove the old module, install the new one, and reconnect the battery. A security relearn procedure may be required, which can typically be done without special tools.
Will this fix my check engine light?
If the check engine light is caused by a faulty ECM, then yes, this part will resolve the issue. It is crucial to have your vehicle properly diagnosed to confirm the ECM is the point of failure before ordering.