Restore Your Vehicle’s Brain and Performance
Is your 2011 Buick Regal or other GM vehicle acting erratically? Experiencing frustrating issues like a persistent check engine light, sudden stalling, rough idling, or a complete no-start condition? These are classic signs that the very core of your vehicle’s management system—the Engine Control Module (ECM)—may be failing. As the central computer, a faulty ECM can disrupt everything from fuel delivery and spark timing to transmission shifting, making an accurate diagnosis difficult and driving unsafe. Don’t let a failing computer keep you off the road. This is the direct, reliable solution you need.
This isn’t just a replacement part; it’s a complete solution. We provide a genuine OEM-quality Engine Control Module, part number 12616889, that comes fully programmed to your vehicle’s specific Vehicle Identification Number (VIN). By flashing it with the latest GM software updates before it even ships, we eliminate the most expensive and time-consuming step of the repair. You get a part that is truly plug-and-play, saving you a trip to the dealership and hundreds of dollars in programming fees. This is the smart, efficient way to get your car running right again.
Case Study: A Tricky Diagnosis
A customer brought in a 2012 Chevy Impala a while back that had every mechanic stumped. The car would randomly lose power, the gauges would flicker, and it threw a confusing mix of communication (U-codes) and throttle body codes. They had already replaced the throttle body and a few sensors with no luck. After connecting my scan tool, I noticed the live data stream would freeze just before the fault occurred. This pointed me directly to the ECM. In my 20+ years of experience, I’ve seen how heat and vibration in the engine bay can cause microscopic cracks in the ECM’s circuit board, leading to these intermittent, hard-to-trace problems. We installed one of our pre-programmed ECMs, and the car has run flawlessly ever since. It’s a reminder that sometimes the ‘brain’ is the source of all the chaos.
Is Your Vehicle Showing These Symptoms?
A failing ECM can manifest in numerous ways. If you’re noticing any of the following, it’s a strong indicator that your engine computer needs attention. This is especially true if you see diagnostic trouble codes (DTCs) related to internal processor failure.
- âś” Check Engine Light is on with no clear cause
- âś” Vehicle refuses to start or starts intermittently
- âś” Engine stalls unexpectedly while driving
- âś” Noticeable decrease in fuel economy
- âś” Poor engine performance, hesitation, or misfires
- âś” Automatic transmission shifts harshly or at the wrong times
- âś” Common failure codes like P0601, P0606 (Internal Control Module Processor Error), or U0100 (Lost Communication With ECM/PCM)
A Straightforward Guide to Installation
Installing your new 2011 Regal Engine Control Module is a manageable task for a confident DIYer. By following these steps, you can avoid a costly shop visit. Always consult a vehicle-specific repair manual if you are unsure.
- Safety First: Disconnect the negative terminal from your vehicle’s battery to prevent any electrical shorts.
- Locate the ECM: On most compatible vehicles like the 2011 Regal, the ECM is found in the left-hand (driver’s side) of the engine compartment, often near the air filter housing or firewall.
- Disconnect Wiring: Carefully release the locking tabs on the electrical connectors and pull them straight out from the module. Never force them. Inspect the connectors for any corrosion or damage.
- Remove the Old Module: Unbolt the old ECM from its mounting bracket. There are typically a few 10mm bolts holding it in place.
- Install the New Module: Mount your new, pre-programmed ECM onto the bracket and secure it with the bolts.
- Reconnect Everything: Firmly plug the wiring harnesses back into the new ECM until they click into place. Reconnect the negative battery terminal.
- Perform Relearn (If Necessary): While this module is pre-programmed, some vehicles require a security or crank-position-sensor relearn procedure. This can often be done without special tools (e.g., cycling the key) or with a capable scan tool. Check your service manual for specifics. Your vehicle is now ready to start.
Verified Vehicle Compatibility
This module, part number 12616889, is a direct replacement for several part numbers, including 12630908, 12637106, 12642665, 12650256, and 12651993. It is guaranteed to fit the following models. Please match your vehicle and options below:
Buick LaCrosse (2010-2011): 2.4L & 3.0L
Buick Regal (2011): All options
Cadillac CTS (2010-2012): 3.0L & 3.6L
Cadillac SRX (2010-2011): 3.0L
Chevrolet Camaro (2012): 3.6L
Chevrolet Captiva Sport (2012): All options
Chevrolet Equinox (2010-2011): All options
Chevrolet Impala (2012): All options
Chevrolet Orlando (2012-2013): All options
GMC Terrain (2010-2011): All options
Saab 9-5 (2010-2011): 2.0L
Frequently Asked Questions
What do you mean by ‘programmed to my VIN’?
Before we ship your ECM, our technicians use your Vehicle Identification Number (VIN) to load the exact GM-certified software and calibrations for your car’s specific configuration. This ensures it works correctly right out of the box, just like a new part from the dealer, but without the high cost.
Do I need to do anything else after installation?
In most cases, no. The module is ready to go. However, on some vehicles, a simple security relearn procedure (often called a Passlock or anti-theft relearn) may be needed. This can typically be done in your driveway by cycling the ignition key and is detailed in many online resources or your service manual.
Is this a reliable part?
Absolutely. We use high-quality, tested modules and flash them with the latest, most stable software from General Motors. This often corrects underlying bugs that may have existed in your original module’s programming, leading to improved performance and long-term reliability.
How do I provide my VIN?
After you complete your purchase, you will receive instructions on how to send us your 17-digit VIN. We cannot program or ship your part until we receive this information, so please provide it promptly to avoid delays.
Will this 2011 Regal Engine Control Module fix my check engine light?
If the check engine light is caused by an internal failure of the ECM (like codes P0601 or P0606), then yes, this part is the correct fix. If the light is on for another reason, such as a bad oxygen sensor, this will not resolve that specific issue. A proper diagnosis is always recommended.