Is Your Buick Regal Running Rough?
A flashing check engine light, unexplained stalling, poor fuel economy, or a complete no-start condition can be incredibly frustrating. These are all classic signs that the central command center of your vehicle, the Engine Control Module (ECM), may be failing. The ECM is the brain of your engine, meticulously managing everything from fuel injection and spark timing to transmission shifts and emissions control. When it falters, the entire performance and reliability of your 2011 Buick Regal are compromised.
The Perfect Solution: VIN-Programmed for Your Vehicle
Don’t settle for a generic, used module that will cause more headaches than it solves. This Engine Control Module, part number 12630908, is the definitive solution for your vehicle. We take the guesswork and complexity out of the repair by professionally programming the module specifically to your car’s Vehicle Identification Number (VIN) before it ever leaves our facility. This critical step ensures that the ECM communicates flawlessly with your car’s existing systems, including the anti-theft system, transmission, and all related sensors. We flash it with the latest, most stable software updates directly from GM, which can often resolve underlying issues and improve overall vehicle operation.
From the Diagnostic Bay
I remember a 2011 Regal that came in on a tow truck. The owner had already replaced the fuel pump and crank sensor, chasing a persistent no-start issue. The codes were all over the place, pointing towards a communication failure. He was convinced the ECM was fried. Before installing a new one, I did a quick check of the basics. I found a corroded main ground strap from the engine block to the chassis. It was barely making contact. After cleaning the connection points and tightening the bolt, the car fired right up and ran perfectly. The old ECM was fine. This is a crucial reminder: always verify the main power and ground connections to your ECM before condemning the unit. A simple, overlooked connection can mimic a catastrophic computer failure.
Common Symptoms of a Failing ECM
- ✔ Persistent Check Engine Light (CEL) with various communication or processor codes.
- ✔ Engine stalling or hesitating intermittently, especially when warm.
- ✔ Noticeable decrease in fuel efficiency.
- ✔ Rough idling or misfires that aren’t resolved by new spark plugs or coils.
- ✔ Transmission shifting erratically or getting stuck in gear.
- ✔ Complete failure to start the engine, with no spark or fuel injector pulse.
- ✔ Other warning lights on the dashboard, such as traction control or ABS, illuminating without cause.
Why a Programmed 2011 Regal Engine Module is Essential
Modern GM vehicles use sophisticated networks where modules are paired to the car’s VIN. Simply installing a used ECM from another vehicle will not work; the car will not start due to the immobilizer system. Our service eliminates this problem. By providing your VIN at checkout, you receive a unit that is ready for installation. While a ‘relearn’ procedure for the crankshaft position sensor may be required after installation, the core programming is complete, saving you a costly trip to the dealership and hours of diagnostic frustration. This module is a direct replacement for a wide range of GM vehicles, ensuring broad compatibility. It directly interchanges with part numbers: 12616889, 12630908, 12637106, 12642665, 12650256, and 12651993.
Frequently Asked Questions
Is this module ready to install right out of the box?
Yes, this module is pre-programmed to the VIN you provide, making it ready for installation. In some cases, a simple crankshaft variation relearn procedure may be necessary, which can be performed with a capable scan tool or by following a specific drive cycle.
How do I provide my vehicle’s VIN?
After you complete your purchase, simply send us a message with your 17-digit VIN. We cannot program and ship the module without it. Your VIN is typically found on your driver’s side dashboard (visible through the windshield) or on the driver’s side door jamb sticker.
What happens if I install an unprogrammed module?
An unprogrammed module will not allow the engine to start because the vehicle’s anti-theft system (VATS/Passlock) will not recognize it. Our VIN programming service ensures the module is correctly paired with your vehicle’s security system.
Does this part fit vehicles other than the 2011 Buick Regal?
Absolutely. This ECM is compatible with a wide array of GM vehicles, including models of the Cadillac CTS, Chevrolet Impala, Equinox, Camaro, Captiva Sport, GMC Terrain, and more. Please refer to the detailed fitment list on this page to confirm compatibility with your specific year, make, and model.
What tools are required for installation?
Installation typically requires basic hand tools, such as a socket set and ratchet, to remove the mounting bolts and disconnect the electrical connectors. It is crucial to disconnect the vehicle’s battery before beginning the installation to prevent electrical damage.