Restore Peak Performance to Your 2011 Buick Regal
If you’re dealing with a frustrating check engine light, intermittent stalling, or a car that just won’t start, a failing Engine Control Module (ECM) is often the culprit. As the central computer of your vehicle, the ECM governs everything from fuel mixture and ignition timing to transmission shifting. When it fails, it can cause a cascade of confusing and costly problems. This replacement 2011 Regal Engine Module is the definitive solution, arriving at your door pre-programmed to your vehicle’s specific VIN.
Forget about expensive dealership visits, towing fees, and the hassle of coordinating programming. We handle the critical software flashing for you. Simply provide your vehicle’s VIN during checkout, and our technicians will load the latest, most stable GM factory software onto the module. This ensures seamless communication with your car’s other systems and restores the original performance and fuel efficiency you expect from your Buick.
A Technician’s Notebook
I remember a 2011 Regal that came into the shop with a ghost of a problem. The owner had replaced the battery and alternator, but it would still intermittently refuse to start, with no rhyme or reason. No codes were stored initially. After a few days of testing, we finally caught it in the act: a complete loss of communication with the scan tool. The 5-volt reference circuit, which powers many of the engine’s sensors, was dropping out. This pointed directly to an internal failure in the ECM. We installed a VIN-programmed module just like this one, and the car fired up instantly. The customer called a week later, thrilled that the problem was finally solved for good. It’s a classic case of how a faulty 2011 Regal Engine Module can mimic other component failures.
Is Your Vehicle Showing These Symptoms?
A failing ECM can manifest in many ways. If you’re experiencing any of the following, this module is likely the solution you need:
- ✔ Check Engine Light is on with no clear cause
- ✔ Engine stalls, stumbles, or runs rough
- ✔ Vehicle won’t start, or starts and immediately dies
- ✔ Noticeable decrease in fuel economy
- ✔ Transmission shifting issues or harsh engagement
- ✔ Communication error codes, such as U0100
- ✔ Internal processor failure codes like P0601 or P0606
Plug-and-Play Installation: Get Back on the Road Fast
Installing your new engine module is a straightforward process that a confident DIYer can handle. While a security relearn procedure may be required on some vehicles, the core installation is simple.
- Safety First: Disconnect the negative terminal from your vehicle’s battery.
- Locate the Module: On your 2011 Regal, the ECM is located in the left-hand (driver’s side) of the engine compartment.
- Disconnect Connectors: Carefully unclip the wiring harness connectors from the old module. Be gentle, as these plastic clips can become brittle over time.
- Remove the Old ECM: Unbolt the old module from its mounting bracket.
- Install the New Module: Bolt the new, pre-programmed module into place and securely reconnect the wiring harnesses.
- Reconnect Battery: Reattach the negative battery terminal.
- Perform Relearn (If Needed): Start the vehicle. In some cases, a simple security or idle relearn procedure may be necessary. This can often be found in your owner’s manual or online forums.
Verified Vehicle Compatibility
This module, part number 12616889, is a direct replacement for several part numbers and fits a wide range of GM vehicles. Please verify your vehicle is on this list:
- Buick Allure (2010): 2.4L & 3.0L
- Buick LaCrosse (2010-2011): 2.4L & 3.0L
- Buick Regal (2011)
- Cadillac CTS (2010-2012): 3.0L & 3.6L
- Cadillac SRX (2010-2011): 3.0L
- Chevrolet Camaro (2012): 3.6L
- Chevrolet Captiva Sport (2012)
- Chevrolet Equinox (2010-2011)
- Chevrolet Impala (2012)
- Chevrolet Orlando (2012-2013)
- GMC Terrain (2010-2011)
- Saab 9-5 (2010-2011): 2.0L
This part is also a direct replacement for the following part numbers: 12630908, 12637106, 12642665, 12650256, 12651993. Ordering this ensures you receive a fully compatible and correctly programmed 2011 Regal Engine Module.
Frequently Asked Questions
Do I need to do any programming myself?
No. We program the module to your car’s VIN before shipping. It arrives ready for installation. A simple security or key relearn procedure might be needed, which typically doesn’t require special tools.
Where do I provide my VIN?
After you complete your purchase, you will need to send us your 17-digit Vehicle Identification Number (VIN). We cannot ship the module until we have this information to complete the programming.
Is this a brand new part?
This is a high-quality, tested, and guaranteed functional part. Each module is inspected and programmed with the latest GM software to ensure reliability and performance that meets or exceeds original specifications.
Will this fix my car’s specific problem?
This module corrects issues directly caused by a faulty ECM. While the symptoms listed are very common for ECM failure, we always recommend a proper diagnosis by a qualified mechanic to confirm the ECM is the part you need.
What if I order the wrong part?
We use your VIN to guarantee compatibility. By matching the programming to your specific vehicle, we help eliminate the risk of ordering the wrong part for your car’s options and systems.