Is Your Buick Regal Experiencing Engine Problems?
If your 2012 Buick Regal is stalling, misfiring, failing to start, or displaying a persistent Check Engine Light, a failing Engine Control Module (ECM) could be the culprit. The ECM is the central computer of your vehicle, managing everything from fuel injection and ignition timing to transmission shifting and emissions control. When it fails, it can cause a wide range of frustrating and unpredictable issues, leaving your vehicle unreliable and potentially unsafe to drive.
From the Diagnostic Bay
We recently had a 2012 Cadillac CTS come in with a classic no-start condition. The owner had already replaced the battery and alternator, and another shop had even suggested a new fuel pump. After hooking up our scanner, we saw no communication with the engine module. A quick check of the power and ground circuits to the ECM confirmed they were good. The module itself was the point of failure. Instead of a costly tow to the dealer and days of waiting, the customer ordered one of our VIN-programmed modules. The next day, it was a simple plug-in installation, and the car fired right up. It’s a reminder that what seems like a major mechanical issue can often be traced back to this single electronic component.
Direct-Fit Solution for Your 2012 Regal Engine Module
This is a direct replacement Engine Control Module, part number 12651994, for your 2012 Buick Regal. We take the guesswork and high cost out of the equation. Unlike a generic module from a parts store or a salvage yard unit, this ECM comes fully programmed to your vehicle’s specific Vehicle Identification Number (VIN). This critical step ensures that the module communicates correctly with your car’s anti-theft system, transmission, and other onboard computers. Simply provide your VIN during checkout, and we handle the complex programming before we ship it to you.
Common Symptoms of a Failing ECM
- ✔ Check Engine Light is on with various, often inconsistent, trouble codes.
- ✔ Engine stalling or shutting off randomly while driving.
- ✔ Difficulty starting the engine or a complete no-start condition.
- ✔ Noticeable decrease in fuel economy.
- ✔ Poor engine performance, including hesitation, misfires, or rough idling.
- ✔ Automatic transmission shifting erratically or harshly.
- ✔ Communication errors with diagnostic scan tools (U-codes).
Why Choose a VIN-Programmed Module?
Replacing an ECM isn’t just about swapping a part. The module contains software specific to your vehicle’s engine, transmission, and options. Our professional programming service installs the latest GM-certified software onto this module using your VIN. This means you can avoid a trip to the dealership for expensive programming. For most vehicles, the installation is a straightforward plug-and-play process, getting you back on the road quickly and affordably. This unit is a direct replacement for part numbers 12651994, 12643248, 12652814, and AA69.
While this part is listed for the 2012 Buick Regal, its versatile E39 and E39A architecture means it is also compatible with a wide array of other GM vehicles from the same era. This includes models like the Chevrolet Camaro, Captiva Sport, Malibu, Impala, Equinox, and Traverse; the Cadillac CTS and SRX; the GMC Acadia and Terrain; and the Buick LaCrosse, Verano, and Enclave. Please verify the part number on your original module to ensure an exact match for a seamless installation.
Frequently Asked Questions
Do I need to get this ECM programmed by a dealer?
No. We handle all the programming for you before the part is shipped. Simply provide your vehicle’s 17-digit VIN when you place your order, and the module will arrive ready to be installed.
Is this a plug-and-play installation?
Yes, for the vast majority of vehicles, it is. Once programmed to your VIN, the module is ready to be installed. Some GM vehicles may require a simple security relearn procedure, which can be done without any special tools and typically involves a sequence of key turns. Instructions are readily available online for this process.
Where is the ECM located on my 2012 Buick Regal?
On the 2012 Buick Regal, the Engine Control Module is typically located in the engine compartment on the left-hand (driver’s) side, often mounted to the air cleaner housing or inner fender.
What happens if I install this without programming?
An unprogrammed ECM will not work. It will fail to communicate with the other modules in your vehicle, resulting in a no-start condition and setting anti-theft system codes. Our VIN programming service is essential for proper functionality.
How do I find my vehicle’s VIN?
Your VIN can be found on your vehicle’s registration, insurance card, or on the driver’s side of the dashboard visible through the windshield. It is also located on the driver’s side door jamb sticker.