Restore Peak Performance to Your Vehicle
Is your Chevrolet Impala, Cadillac CTS, or Buick LaCrosse suffering from perplexing issues like a persistent check engine light, random stalling, poor fuel mileage, or a complete no-start condition? These are common indicators of a failing Engine Control Module (ECM), the central computer responsible for managing your vehicle’s engine performance, fuel delivery, and emissions systems. When the ECM begins to fail, it can create a cascade of problems that are frustrating and difficult to diagnose. This replacement ECM, part number 12651994, is the definitive solution to restore your vehicle’s factory performance and reliability.
From the Diagnostic Bay
We recently had a 2013 Chevy Impala come into the shop with an issue that had stumped two other mechanics. The car would run fine for about 20 minutes and then suddenly stall, refusing to restart until it cooled down completely. There were no consistent trouble codes, just a generic communication error that would pop up intermittently. We checked the fuel pump, crank sensor, and wiring harnesses, but everything tested fine. On a hunch, we monitored the live data stream from the ECM. As the engine warmed up, we noticed the data for several key sensors started to become erratic right before it stalled. The internal processors of the original ECM were failing under heat. We replaced it with a pre-programmed unit just like this one, performed the quick security relearn, and the car ran perfectly. The customer was thrilled to have their reliable daily driver back without an expensive trip to the dealership.
Common Symptoms of a Failing ECM
- ✔ Persistent Check Engine Light (CEL) that won’t clear.
- ✔ Engine misfires, stumbles, or runs rough.
- ✔ Unexplained drop in fuel economy.
- ✔ Vehicle stalls unexpectedly while driving or at idle.
- ✔ Hard starting or complete no-start condition.
- ✔ Harsh or erratic automatic transmission shifting.
- ✔ Loss of power and poor acceleration.
- ✔ Communication errors with diagnostic scan tools.
The Smart Solution: A Pre-Programmed 2012-2016 Impala ECM
Don’t waste time and money at the dealership. This Engine Control Module arrives at your door completely programmed to your vehicle’s specific Vehicle Identification Number (VIN). We flash the unit with the latest, most stable software updates directly from GM, ensuring optimal performance and compatibility. This plug-and-play approach eliminates the need for expensive factory scan tools or programming services. Simply provide us with your VIN after purchase, and our technicians will handle the complex programming. The result is a straightforward installation process that gets you back on the road quickly and confidently.
Wide-Ranging GM Compatibility
While this is a perfect fit for the 2012-2016 Impala ECM, this versatile module (interchangeable with part numbers 12643248, 12652814, and internal ID AA69) is the specified computer for a wide variety of GM vehicles. Please verify your part number and check the list below to ensure a perfect match for your car or SUV:
- ACADIA: 2012 (behind fan shroud)
- CAMARO: 2012 (3.6L)
- CAPRICE: 2012-2013 (3.6L)
- CAPTIVA SPORT: 2012-2013
- CTS: 2012-2014 (3.0L & 3.6L)
- ENCLAVE: 2012 (behind fan shroud)
- EQUINOX: 2012
- IMPALA: 2012-2013 (air cleaner bracket), 2014-2016 (VIN W, Limited)
- LACROSSE: 2012
- MALIBU: 2013 (2.4L)
- ORLANDO: 2012-2013
- REGAL: 2012
- SRX: 2012
- TERRAIN: 2012
- TRAVERSE: 2012 (behind fan shroud)
- VERANO: 2012-2013 (2.4L)
Frequently Asked Questions
Is this part truly plug-and-play?
Yes, this ECM is pre-programmed to your vehicle’s VIN, so it will not require a trip to the dealership for software flashing. However, on many GM vehicles, you may need to perform a simple security relearn procedure (also known as a VATS relearn) which pairs the new ECM to your existing keys. This procedure typically takes 30 minutes and can be done at home with no special tools.
How do I provide my VIN number?
After you complete your purchase, please reply to your order confirmation email with your 17-digit VIN. You can also add it to the ‘notes’ section during checkout. We cannot program and ship your module without this information.
How can I be sure my ECM is the problem?
The symptoms listed above are strong indicators of ECM failure. However, they can also be caused by faulty sensors, wiring, or fuel system components. For a definitive diagnosis, it is always best to have your vehicle inspected by a qualified automotive technician who can rule out other potential causes before you order a replacement computer.
What if my original part number is slightly different?
This module directly replaces part numbers 12651994, 12643248, and 12652814. If your part number is not on this list but your vehicle is, please contact us with your VIN and original part number to confirm compatibility before ordering.
Where is the ECM located on my 2013 Impala?
On the 2012-2013 Chevrolet Impala, the Engine Control Module is typically located on the air cleaner bracket in the engine compartment, making it relatively easy to access for replacement.