Restore Peak Performance to Your GM Vehicle
Is your Chevrolet Caprice, Malibu, or other GM vehicle suffering from perplexing issues like a persistent check engine light, poor fuel economy, rough idling, or even a no-start condition? These are classic signs of a failing Engine Control Module (ECM), the central computer that manages your engine’s performance. This genuine used GM ECM, part number 12644446 (interchangeable with 12653998, 12633555, and 12655007), is the reliable and cost-effective solution to get your vehicle running smoothly again.
The Brain of Your Engine, Restored and Ready
The ECM is arguably the most critical component in a modern vehicle. It processes information from dozens of sensors to control fuel injection, ignition timing, emissions systems, and transmission shifting. When it fails, the entire vehicle’s performance and reliability are compromised. Replacing it with a generic, unprogrammed module from a local parts store often leads to more headaches, requiring expensive trips to the dealership for programming and security relearns. We eliminate that hassle. Upon purchase, simply provide us with your vehicle’s VIN, and our technicians will flash this module with the latest, most stable software directly from GM. This ensures it communicates perfectly with all other modules in your car, just like the original one did from the factory.
From the Diagnostic Bay
We recently had a 2015 Chevy Equinox towed in with a ‘no-start’ condition. The owner had already replaced the battery, starter, and fuel pump based on advice from online forums. After hours of frustration, he brought it to us. Our scan tool couldn’t communicate with the ECM. After confirming power and ground to the module were good, we identified a classic internal ECM failure. Instead of a costly new unit from the dealer, we sourced a quality used module like this one, programmed it to his VIN, and had him back on the road the same day for a fraction of the cost. It’s a reminder that diagnosing the core issue first saves time and money.
Symptoms of a Failing 2014-2016 Caprice ECM
- ✔ Check Engine Light is illuminated with communication-related (U-codes) or processor fault codes.
- ✔ Vehicle will not start or is difficult to start.
- ✔ Noticeable decrease in fuel efficiency.
- ✔ Rough or unpredictable engine idling.
- ✔ Stalling or hesitation during acceleration.
- ✔ Automatic transmission shifting issues.
- ✔ Inability to pass an emissions test.
Guaranteed Compatibility with VIN-Specific Programming
While this listing is focused on the 2014-2016 Caprice ECM, this versatile module is original equipment on a wide array of General Motors vehicles. The key to making it work is our precise VIN programming service. By flashing the module with your car’s specific data, we ensure it functions correctly, regardless of the model it was originally sourced from. This part is a direct fit for the following vehicles:
- ACADIA 13-16
- ATS 13-15 (2.0L, 2.5L)
- CAMARO 13-15 (3.6L)
- CAPRICE 14-16 (3.6L)
- CAPTIVA SPORT 13-15
- CTS 14-15 (Sdn, 2.0L)
- ENCLAVE 13-16
- EQUINOX 13-16
- IMPALA 14-17 (New Style)
- LACROSSE 13-16
- MALIBU 13-16 (2.0L, 2.4L, 2.5L)
- ORLANDO 14
- REGAL 13-16 (2.0L, 2.4L)
- SRX 13-16
- TERRAIN 13-16
- TRAVERSE 13-16
- VERANO 13-16 (2.0L)
- XTS 13-16 (3.6L)
Note: Please ensure your vehicle is on this list. The VIN programming is what guarantees a perfect match for your specific options and systems.
Frequently Asked Questions
Is this ECM a plug-and-play part?
Yes! Because we program the module to your vehicle’s specific VIN before shipping, it is ready for installation. In most cases, no further programming is needed. Some vehicles may require a simple security or crankshaft position sensor relearn procedure, which can be done with a capable scan tool or by following a specific drive cycle.
How do I provide my VIN?
After you complete your purchase, please send us a message with your 17-digit Vehicle Identification Number (VIN). We cannot ship the part until we receive this information, as the programming is a critical step in the process.
What is the benefit of getting a pre-programmed module?
A pre-programmed module saves you significant time and money. You avoid towing your vehicle to a dealership and paying their high labor rates for programming. It turns a complex electronic repair into a straightforward component swap you can often do in your own driveway.
Is this a new part?
No, this is a high-quality, tested, genuine used part sourced from a salvaged vehicle. We inspect and verify the functionality of each module before programming and shipping to ensure reliability.
Will this fix my car’s problem for sure?
This part will resolve any issues directly caused by a faulty ECM. However, it’s crucial to ensure your vehicle has been properly diagnosed. This module will not fix problems related to other failed sensors, wiring, or mechanical components.