Is Your Buick Lucerne Experiencing Engine Problems?
If your 2009, 2010, or 2011 Buick Lucerne is suffering from issues like a persistent check engine light, poor fuel mileage, stalling, or rough running, a failing Engine Control Module (ECM) is a likely culprit. The ECM is the central computer of your vehicle, managing everything from fuel injection and ignition timing to transmission shifting. When it fails, it can cause a wide range of frustrating and difficult-to-diagnose problems. This pre-programmed ECM is the definitive solution for your vehicle’s performance issues, providing a reliable and straightforward fix.
From the Diagnostic Bay
We had a 2010 Chevy Malibu come into the shop with an intermittent stalling issue that was driving the owner crazy. They had already replaced the spark plugs, ignition coils, and a couple of sensors with no luck. The car would run fine for days, then suddenly die at a stoplight. After extensive testing, we noticed the ECM would stop communicating with our scan tool right before it stalled, but only when the engine bay was fully heat-soaked. We installed one of our VIN-programmed ECMs, and the problem was solved instantly. It’s a classic example of how a failing computer can mimic other component failures, making a direct-fit, pre-programmed module the smartest repair.
Common Symptoms of a Failing ECM
- ✔ Persistent Check Engine Light (CEL) with various trouble codes.
- ✔ Engine stalling, stumbling, or misfiring unexpectedly.
- ✔ Noticeable decrease in fuel economy.
- ✔ Difficulty starting the engine or a complete no-start condition.
- ✔ Harsh or erratic automatic transmission shifting.
- ✔ Loss of power and poor acceleration.
- ✔ Inability for diagnostic scan tools to communicate with the module.
Solving Issues with Your 2009-2011 Lucerne ECM
Don’t let a faulty computer keep your car off the road or lead to expensive, unnecessary repairs. Our replacement 2009-2011 Lucerne ECM arrives at your door programmed specifically for your vehicle. We use your Vehicle Identification Number (VIN) to flash the module with the latest, most stable software updates directly from GM. This ensures perfect compatibility and optimal performance, eliminating the need for a costly trip to the dealership for programming.
Simple, Hassle-Free Process
- ✔ Place Your Order: Add this ECM to your cart and complete the checkout process.
- ✔ Provide Your VIN: After your purchase, simply send us your vehicle’s 17-digit VIN.
- ✔ We Program It: Our technicians will program the module to match your vehicle’s exact specifications.
- ✔ Install and Drive: Once you receive the part, simply install it. In most cases, it’s a plug-and-play solution, though some vehicles may require a simple security relearn procedure (often called a key-cycle relearn), which you can do yourself without any special tools.
This module, service number 12597125, is a direct replacement for several original part numbers, including 12612397, 12594750, 12629019, and more. It’s not just for the Lucerne; it’s a versatile computer that fits a wide range of GM vehicles, including the Chevy Silverado, Malibu, Cobalt, HHR, Impala, GMC Sierra, Pontiac G6, Saturn Aura, and others. Please verify the fitment list to ensure compatibility with your specific model and engine.
Frequently Asked Questions
Is this ECM truly plug-and-play?
Yes, for most vehicles. We program it using your VIN so it’s ready for installation. Some GM vehicles may require a simple security or anti-theft relearn procedure, which typically involves a series of key turns and can be done in your driveway without special tools.
Where do I find my VIN?
Your 17-digit Vehicle Identification Number (VIN) can be found on your vehicle’s registration, insurance card, or on a plate on the driver’s side dashboard visible through the windshield.
Do I need to send my old ECM back?
No core charge or return is required for this part. You can keep or dispose of your old module.
What if my original part number isn’t listed?
Please contact us with your VIN and original part number. This ECM replaces many service numbers, and we can verify compatibility for you to ensure you get the correct part.
How can I be sure the ECM is the problem?
While the symptoms listed are common for ECM failure, it’s always best to have a proper diagnosis performed by a qualified mechanic. Common checks include verifying power and ground to the ECM and checking for communication with a scan tool.
Does this fit vehicles other than the Buick Lucerne?
Absolutely. This ECM is compatible with a wide array of GM vehicles from Chevrolet, GMC, Pontiac, and Saturn. Please review the detailed fitment list on this page to confirm it matches your make, model, and engine.