Is Your Buick Regal Running Rough? The Engine’s Brain Might Be the Problem.
If your 2011 Buick Regal is experiencing frustrating issues like erratic idling, stalling, poor fuel economy, or a persistent Check Engine Light, the root cause might be a failing Engine Control Module (ECM). The ECM is the central computer of your vehicle, responsible for managing everything from fuel injection and ignition timing to transmission shifts and emissions control. When it starts to fail, it can cause a cascade of performance problems that can be difficult to diagnose and leave you stranded.
This replacement Engine Control Module, part number 12616889, is the definitive solution to restore your vehicle’s factory performance and reliability. We take the guesswork out of the repair by pre-programming the module to your vehicle’s specific Vehicle Identification Number (VIN). This ensures that all software is up-to-date with the latest GM calibrations and that the module communicates flawlessly with all other systems in your car, just as it did when it left the factory. This is not a generic, one-size-fits-all part; it’s a tailored solution for your exact vehicle.
From the Diagnostic Bay
We had a 2011 Buick Regal come into the shop with a classic complaint: intermittent stalling at stoplights and a check engine light with a random misfire code (P0300). The owner had already replaced the spark plugs, ignition coils, and even the mass airflow sensor with no success. After hooking up our diagnostic scanner and monitoring live data, we noticed the short-term fuel trims were swinging wildly without any corresponding sensor input changes. This pointed us directly to the ECM. Instead of processing sensor data correctly, the failing module was making incorrect adjustments. After installing a VIN-programmed 2011 Regal Engine Module, the fuel trims stabilized immediately, the misfire disappeared, and the car ran perfectly. It’s a powerful reminder that sometimes the issue isn’t the sensors, but the computer interpreting their data.
Why Choose a VIN-Programmed Module?
Modern vehicles are complex networks of computers. Simply installing a used or non-programmed ECM from another vehicle will not work. The module needs to be coded with your car’s specific VIN to recognize the engine, transmission, anti-theft system (immobilizer), and other unique options. Our professional programming service handles this critical step for you. When you receive the part, it’s ready for a straightforward installation, often only requiring a simple security relearn procedure that you can perform yourself. This saves you a costly trip to the dealership and eliminates the need for expensive proprietary scan tools.
Common Symptoms of a Failing ECM
- ✔ Check Engine Light is on or flashing
- ✔ Engine stalling or misfiring unpredictably
- ✔ Noticeable decrease in fuel efficiency
- ✔ Rough or erratic idling
- ✔ Difficulty starting the engine or a no-start condition
- ✔ Transmission shifting problems or harsh shifts
- ✔ Loss of power and poor acceleration
- ✔ Communication errors with diagnostic scan tools
Direct-Fit for Your 2011 Regal Engine Module and More
This module is a direct replacement for original part number 12616889 and is also interchangeable with several other GM part numbers, including 12630908, 12637106, 12642665, 12650256, and 12651993. It fits a wide array of GM vehicles beyond the Buick Regal, such as the Cadillac CTS, Chevrolet Camaro, GMC Terrain, and more. By providing your VIN, you guarantee that we will select and program the correct hardware and software combination for your specific make, model, and year. Restore your vehicle’s performance and peace of mind with this reliable, pre-programmed engine control solution.
Frequently Asked Questions
Do I need to do anything after installing this ECM?
In most cases, you will need to perform a security relearn procedure, also known as a key relearn. This process syncs the new ECM with your vehicle’s anti-theft system. It’s a simple procedure that typically takes 10-30 minutes and does not require any special tools. We include instructions to guide you through it.
How do I provide my VIN?
After placing your order, simply send us a message with your vehicle’s 17-digit VIN. You can find the VIN on your vehicle’s registration, insurance card, or on the driver’s side dashboard visible through the windshield.
Is this a plug-and-play part?
Yes, because we program it to your VIN before shipping, it is a plug-and-play installation. Once you complete the security relearn procedure, your vehicle will start and run correctly with no further programming required.
Will this fix my car’s specific problem?
This module will correct issues directly caused by a faulty ECM. While the symptoms listed are common for ECM failure, they can also be caused by other failing components. It is always recommended to have a proper diagnosis performed by a qualified mechanic. However, if the ECM has been confirmed as the point of failure, this part is the correct solution.
What is the difference between an ECM, ECU, and PCM?
The terms are often used interchangeably. ECM (Engine Control Module) and ECU (Engine Control Unit) typically refer to the computer that controls engine functions. PCM (Powertrain Control Module) is a more inclusive term for a module that controls both the engine and the transmission. For your vehicle, this module serves as the primary powertrain computer.