Restore Peak Performance to Your GM Vehicle
Is your 2011 Buick Regal or other GM vehicle suffering from frustrating engine problems? A persistent check engine light, unexplained stalling, poor fuel economy, or a complete no-start condition can often be traced back to a failing Engine Control Module (ECM). As a technician with over two decades of experience, I’ve seen firsthand how a faulty ECM can cripple an otherwise healthy vehicle. This isn’t just an inconvenience; it’s a critical failure that affects performance, fuel efficiency, and safety. This replacement 2011 Regal Engine Module is the reliable, professional-grade solution to get your car running smoothly again.
What sets this module apart is our essential pre-programming service. Before we ship your part, we flash it with the latest official GM software updates, tailored specifically to your car’s Vehicle Identification Number (VIN). This means you receive a module that is ready for installation right out of the box, eliminating the need for an expensive trip to the dealership for programming. You get a precise, vehicle-specific fix that restores factory performance and communication between all your vehicle’s systems.
A Technician’s Notebook
I remember a 2012 Chevy Impala that came into the bay with a classic intermittent no-start. The owner had already replaced the battery and starter to no avail. When we hooked up the scanner, we found a U0100 Lost Communication with ECM/PCM code, but it wasn’t consistent. After checking the wiring harness for chaffing near the air cleaner bracket—a common issue on those Impalas—we found everything looked fine. The culprit was the ECM itself, which had an internal fault that would only appear when it heated up. Instead of a costly diagnostic chase, we installed a VIN-programmed module just like this one. The car fired up on the first try and the communication codes vanished. It’s a prime example of how a reliable, pre-programmed module is the most efficient and effective repair.
Is Your GM Vehicle Showing These ECM Failure Signs?
- ✔ Persistent Check Engine Light (CEL) that won’t clear.
- ✔ Diagnostic Trouble Codes (DTCs) like P0601, P0606, or U0100.
- ✔ The engine cranks but refuses to start.
- ✔ Unexplained drops in fuel economy.
- ✔ Rough idling, stalling, or engine hesitation during acceleration.
- ✔ Harsh or erratic automatic transmission shifting.
- ✔ Communication errors with other vehicle modules.
A Straightforward Guide to Installation
- ✔ Safety First: Always disconnect the negative terminal from your vehicle’s battery before starting any electrical work.
- ✔ Locate the ECM: On the 2011 Regal, the ECM is typically found in the left-hand (driver’s side) of the engine compartment. On other models, it may be near the air cleaner box or on the right side. Refer to your vehicle’s service manual for the exact location.
- ✔ Disconnect and Remove: Carefully unplug the electrical connectors from the old module. They have locking tabs that need to be released. Once disconnected, unbolt the module from its mounting bracket and remove it from the vehicle.
- ✔ Install the New Module: Bolt the new, pre-programmed ECM into place. Securely reconnect all electrical connectors, ensuring they click and lock into position.
- ✔ Reconnect Power: Re-attach the negative battery terminal and tighten it securely.
- ✔ Perform Security Relearn: While the module is programmed, your vehicle’s anti-theft system may need to be relearned. This is typically a simple procedure: turn the key to the ‘ON’ position for 10-15 minutes, then turn it off, and then start the vehicle. Consult your owner’s manual for the specific procedure for your model.
Verified Fitment for Your Vehicle
This Engine Control Module is a direct replacement for part numbers 12616889, 12630908, 12637106, 12642665, 12650256, and 12651993. It is guaranteed to fit the following makes and models:
- Buick Allure (2010)
- Buick LaCrosse (2010-2011)
- Buick Regal (2011)
- Cadillac CTS (2010-2012)
- Cadillac SRX (2010-2011)
- Chevrolet Camaro (2012)
- Chevrolet Captiva Sport (2012)
- Chevrolet Equinox (2010-2011)
- Chevrolet Impala (2012)
- Chevrolet Orlando (2012-2013)
- GMC Terrain (2010-2011)
- Saab 9-5 (2010-2011)
Please provide your VIN upon purchase to ensure we program the correct software for your specific vehicle configuration. This is a crucial step for a successful repair.
How does the VIN programming work?
After you place your order, you will need to send us your 17-digit Vehicle Identification Number (VIN). Our technicians use this VIN to access the latest official GM software for your exact model and options. We load this software onto the module before shipping, so it’s ready for your vehicle.
Is this module difficult to install for a DIYer?
No, this is a very manageable job for a DIY enthusiast. The installation is mostly a plug-and-play process. The only extra step is a simple security relearn procedure, which does not require any special tools and is outlined in your vehicle’s owner’s manual.
Will this fix my check engine light?
If the check engine light is caused by a faulty ECM (with codes like P0601, P0606, etc.), this part will resolve the issue. However, if the light is on due to other failing sensors or components, those issues will still need to be addressed separately.
Where do I find my vehicle’s VIN?
Your VIN can be found on a metal plate on the driver’s side of the dashboard (visible through the windshield), on the driver’s side door jamb sticker, or on your vehicle’s registration and insurance documents.
What is the benefit of getting a module with the newest updates?
GM frequently releases software updates to improve engine performance, fuel efficiency, transmission shifting logic, and fix small bugs. By programming this module with the latest software, you’re ensuring your vehicle runs as well—or better—than it did when it was new.