Restore Peak Performance to Your Buick Regal
Is your 2012 Buick Regal suffering from frustrating and unpredictable engine problems? A faulty Engine Control Module (ECM) is often the hidden culprit behind issues like poor fuel economy, stalling, and a persistent check engine light. This direct-fit replacement ECM, part number 12643248, is the definitive solution to restore your vehicle’s factory performance, drivability, and reliability. We take the guesswork out of the repair by programming the module specifically to your vehicle’s VIN before it ships, ensuring a seamless installation process.
We had a 2012 LaCrosse come into the shop with a laundry list of complaints: intermittent stalling at red lights, erratic shifting, and a check engine light that three other shops couldn’t solve. They had already replaced the throttle body and two oxygen sensors based on the trouble codes. We hooked up our scope and saw the 5-volt reference signal from the ECM was dropping out randomly. The ECM itself was failing internally, causing the sensors to give false readings. We installed a VIN-programmed module just like this one, performed the security relearn, and the car ran perfectly. It’s a classic case of treating the disease, not just the symptoms.
Is Your Vehicle Exhibiting These Symptoms?
A failing ECM can manifest in numerous ways. If you’re experiencing any of the following, a faulty engine computer could be to blame:
- ✔ Check Engine Light is illuminated with various, often inconsistent, trouble codes.
- ✔ Your engine cranks but refuses to start.
- ✔ Unexplained drops in fuel efficiency.
- ✔ The engine misfires, stumbles, or stalls unexpectedly.
- ✔ Harsh or erratic automatic transmission shifting.
- ✔ Communication errors with diagnostic scan tools.
- ✔ Noticeable loss of power and poor acceleration.
The Importance of a VIN-Programmed 2012 Regal ECM
Modern vehicles are complex networks of computers, and the ECM is the central command. Simply installing a used or non-programmed module will not work. Our process ensures this 2012 Regal ECM is a true plug-and-play solution. By programming the unit with your vehicle’s unique Vehicle Identification Number (VIN), we load the latest GM-certified software specific to your car’s engine, transmission, and options package. This critical step ensures all related systems, including the anti-theft immobilizer, function correctly from the moment of installation, saving you a costly trip to the dealership for programming.
Wide-Ranging GM Compatibility
While this is a perfect solution for the 2012 Buick Regal, this versatile E39 ECM was used across a wide array of General Motors vehicles. This module is a direct replacement for part numbers 12651994, 12643248, 12652814, and AA69. It is compatible with models such as:
- 2012-2013 Chevrolet Orlando
- 2012-2014 Cadillac CTS (3.0L & 3.6L)
- 2012 Buick LaCrosse
- 2012 Chevrolet Camaro (3.6L)
- 2012-2013 Chevrolet Captiva Sport
- 2013 Chevrolet Malibu (2.4L)
- 2012-2013 Buick Verano
- 2012-2016 Chevrolet Impala
- 2012 GMC Terrain & Chevrolet Equinox
- 2012 GMC Acadia, Buick Enclave, & Chevrolet Traverse
- And many more. Please verify your part number to ensure compatibility.
Don’t let a faulty computer keep your car off the road. This professionally programmed ECM is the most reliable and efficient way to solve complex electronic issues and restore the smooth, dependable operation you expect from your vehicle. Simply provide your VIN upon purchase, and we’ll handle the complex programming, shipping you a part that’s ready for installation.
Frequently Asked Questions
Do I need to get this ECM programmed by a dealer?
No. We handle all the programming for you before we ship the part. Simply provide us with your vehicle’s VIN during or after checkout, and we will flash the module with the correct, updated software for your specific car. This saves you time and the extra expense of a dealership visit.
Where is the ECM located on a 2012 Buick Regal?
On the 2012 Buick Regal, the Engine Control Module (ECM) is typically located in the engine compartment on the left-hand (driver’s) side, often mounted near the air filter housing or firewall.
Will this fix my check engine light?
If the check engine light is on due to an internal failure of your original ECM, then yes, this replacement part will solve the problem. However, if the light is caused by a separate faulty sensor or component, that issue will still need to be addressed. This module will resolve any codes directly caused by the ECM itself.
What is a VIN and why do you need it?
The VIN, or Vehicle Identification Number, is a unique 17-digit code for your specific car. We use it to access the exact factory software and calibration files from GM for your vehicle’s engine, transmission, and options. This ensures perfect compatibility and function.
Is any additional setup required after installation?
In most cases, the installation is straightforward. However, some GM vehicles may require a simple, key-on/key-off security relearn procedure to sync the new ECM with the vehicle’s anti-theft system. This procedure can be done without any special tools and instructions are readily available online.