Is Your Cadillac DTS Running Rough? The Problem Might Be Its Brain.
If your 2009-2011 Cadillac DTS is experiencing frustrating and unpredictable issues like a persistent check engine light, poor fuel economy, stalling, or a complete no-start condition, the culprit is often the Engine Control Module (ECM). As the central computer of your vehicle, the ECM is responsible for managing everything from fuel injection and ignition timing to transmission shifting and emissions control. When it begins to fail, it can create a cascade of problems that are difficult to diagnose and can seriously impact your car’s performance and reliability.
Don’t let a faulty computer keep your luxury sedan off the road. This direct-replacement Engine Control Module, part number 12630464, is the definitive solution to restore your vehicle’s factory performance. We take the guesswork and hassle out of the repair process. Unlike a generic module from a parts store, this unit comes fully programmed to your specific vehicle using your VIN. This means it’s ready for a true plug-and-play installation, with all the latest software updates from GM already loaded. You get a component that is precisely matched to your DTS, eliminating the need for an expensive trip to the dealership for programming.
Symptoms of a Failing Cadillac DTS ECM
- ✔ Persistent Check Engine Light (CEL) with various trouble codes.
- ✔ Engine stalling or shutting off unexpectedly while driving.
- ✔ Rough idling, misfires, or hesitation during acceleration.
- ✔ Noticeable decrease in fuel efficiency.
- ✔ Harsh or erratic automatic transmission shifting.
- ✔ Difficulty starting the engine or a complete no-start condition.
- ✔ Communication errors with diagnostic scan tools.
- ✔ Other warning lights, such as traction control, may illuminate.
The Smart Solution: A VIN-Programmed 2009-2011 DTS ECM
Replacing your vehicle’s ECM used to be a complicated process requiring specialized tools and a visit to the dealer. Our solution simplifies this critical repair. By providing us with your Vehicle Identification Number (VIN) during checkout, you empower our technicians to flash the module with the exact software and calibrations your Cadillac DTS requires. This includes all factory anti-theft information (PATS/VATS keys), ensuring seamless integration with your existing keys and security system. The module arrives at your door ready to be installed, saving you significant time, money, and frustration.
This module is a reliable, high-quality component designed to meet or exceed original equipment specifications. It is interchangeable with a wide range of service numbers, ensuring broad compatibility. The interchangeable part numbers include: 12636659, 12639300, 1263605, 12628993, 12628911, 12625453, 12622175, 12630464, and 12678512.
Broad GM Vehicle Compatibility
While this is the primary ECM for the 2009-2011 Cadillac DTS, its versatile E38 architecture was used across many GM vehicles. This part is also a direct fit for the following makes and models:
Frequently Asked Questions
Do I need to do any programming after I receive this ECM?
No. This ECM comes fully programmed to your vehicle’s VIN. It is ready for installation right out of the box. In some rare cases, a Crankshaft Variation Relearn procedure may be needed, which can be done with a capable scan tool.
Is this a simple plug-and-play installation?
Yes, for the most part. The process involves disconnecting the battery, unplugging the electrical connectors from the old ECM, removing it, and installing the new one in its place. Once the new module is connected and the battery is reconnected, you should be ready to start the vehicle.
How do I provide my VIN?
You can enter your vehicle’s 17-digit VIN in the designated field during the checkout process. Please double-check it for accuracy, as the programming is based entirely on this number.
Will this fix my check engine light?
If the check engine light and associated symptoms are caused by a faulty ECM, then this part will resolve the issue. It is crucial to ensure that the root cause of the problem is the ECM and not a separate sensor or wiring issue.
What if I have a different part number?
This module is a direct replacement for several service numbers, including 12636659, 12639300, 12628993, and others listed in the description. As long as your original part number is on our interchange list, this module will work perfectly.