Restore Peak Performance to Your Vehicle’s Engine
Is your 2010-2012 Cadillac CTS, or another compatible GM vehicle, suffering from frustrating and unpredictable engine problems? Issues like a persistent check engine light, rough idling, stalling, poor fuel economy, or a complete no-start condition often point to a single culprit: a failing Engine Control Module (ECM). As the central computer, or ‘brain,’ of your vehicle’s engine, the ECM is responsible for managing everything from fuel injection and ignition timing to emissions and transmission shifting. When it fails, the entire system’s performance and reliability are compromised.
This direct-fit replacement ECM, part number 12642665, is the definitive solution to restore your vehicle’s original functionality and driving characteristics. The most significant advantage of our service is that this module arrives at your door fully programmed to your vehicle’s specific Vehicle Identification Number (VIN). We flash it with the latest, most stable software updates directly from GM, eliminating the need for an expensive trip to the dealership for programming. This plug-and-play convenience saves you time, money, and the headache of dealing with complex diagnostic tools.
Solving Common ECM Failure Symptoms
A faulty engine computer can manifest in numerous ways. If you’re experiencing any of the following, a failing ECM is a highly likely cause.
- ✔ Check Engine Light: The most common indicator, often with codes related to processor faults (e.g., P0601, P0606) or communication errors.
- ✔ Engine Stalling or Misfiring: The engine may stall unexpectedly, misfire, or run erratically due to incorrect fuel and spark commands.
- ✔ No-Start Condition: The vehicle may crank but fail to start because the ECM is not activating the fuel pump or ignition coils.
- ✔ Poor Fuel Economy: Inefficient engine operation caused by incorrect air/fuel mixture calculations leads to more frequent stops at the pump.
- ✔ Erratic Transmission Shifting: The ECM works with the Transmission Control Module (TCM), and a fault can cause harsh or delayed shifts.
- ✔ Failed Emissions Test: An improperly functioning ECM cannot correctly manage the vehicle’s emissions systems.
Why Choose Our 2010-2012 CTS Engine Control Module?
This isn’t just a part; it’s a complete, ready-to-install solution. By providing us with your VIN during checkout, you ensure that the module you receive is a perfect match for your vehicle’s factory specifications and options. We handle the complex programming so you can focus on the straightforward installation. This component is a direct replacement for multiple part numbers, including 12616889, 12630908, 12637106, 12650256, and 12651993, ensuring broad compatibility across a wide range of GM models like the Chevrolet Camaro, Impala, Equinox, GMC Terrain, and Buick LaCrosse. Restore your vehicle’s reliability and performance with a component you can trust.
Frequently Asked Questions
What is an ECM and what does it do?
The Engine Control Module (ECM) is your vehicle’s main computer for the engine. It takes data from sensors all over the engine and uses it to control fuel injection, ignition timing, and other critical functions to ensure the engine runs efficiently and cleanly.
Is this module truly plug-and-play?
Yes, for the vast majority of vehicles. We program the module to your specific VIN, which loads all the correct software for your car’s engine, transmission, and options. In some cases, a simple ‘security relearn’ procedure may be required after installation, which can typically be done without special tools.
How do I provide my VIN?
After you complete your purchase, you will need to send us your 17-digit Vehicle Identification Number (VIN). We cannot ship your part until we receive this information, as the programming is essential for the part to function in your vehicle.
Will this fix my check engine light?
If the check engine light is caused by a faulty ECM (with codes like P0601, P0602, P0606, etc.), then this replacement part is the correct fix. However, if the light is on due to a bad sensor or another mechanical issue, you will still need to diagnose and repair that separate problem.
My original module has a different part number. Will this still work?
Yes, this ECM is a direct replacement for several part numbers, including 12616889, 12630908, 12637106, 12650256, and 12651993. As long as your vehicle is listed in our compatibility chart and we program the module with your VIN, it will function correctly.