Restore Peak Performance to Your Buick Lucerne
Is your 2008 Buick Lucerne suffering from perplexing issues like stalling, poor fuel economy, or a persistent Check Engine Light? These are often hallmark signs of a failing Engine Control Module (ECM), the central computer of your vehicle. A faulty ECM can disrupt everything from fuel injection and ignition timing to transmission shifting, leading to a frustrating and unreliable driving experience. This genuine GM Engine Control Module, part number 12607096, is the definitive solution to restore your vehicle’s original performance, drivability, and efficiency.
Unlike generic or salvage yard parts, this ECM comes fully programmed to your specific vehicle. Upon purchase, simply provide us with your Vehicle Identification Number (VIN), and our technicians will flash the module with the latest, most stable software updates directly from General Motors. This critical step ensures seamless integration with your Lucerne’s existing systems, eliminating the need for expensive dealership programming and getting you back on the road faster.
From the Diagnostic Bay
We once had a 2008 Buick Lucerne with the 4.6L V8 come in with a complaint of intermittent stalling at stoplights and a random P0606 (ECM Processor Fault) code. The owner had already replaced the throttle body and MAF sensor with no success. After confirming power and grounds to the ECM were solid, we suspected the module itself. Instead of just swapping it, we installed one of our VIN-programmed units. The key was the fresh GM software, which contained patches for the very processor logic issue the original unit was experiencing. The car ran perfectly afterward, saving the customer from chasing more phantom electrical gremlins. A correctly programmed module is often the key difference between a lasting repair and a recurring headache.
Identifying a Failing 2008 Lucerne Engine Module
A failing engine computer can manifest in numerous ways, often mimicking other sensor or component failures. If you’re experiencing a combination of the following symptoms, your ECM is a likely culprit. This module is the direct replacement to solve these common issues.
- ✔ Check Engine Light: The most common indicator, often with communication-related or processor fault codes (e.g., P0601, P0606).
- ✔ Engine Stalling or Misfiring: The engine may stall unexpectedly, run rough, or misfire as the ECM fails to properly control spark and fuel.
- ✔ Poor Fuel Economy: Incorrect fuel mixture calculations can lead to a sudden and significant drop in MPG.
- ✔ Transmission Shifting Problems: The ECM communicates with the transmission controller, and a failure can cause harsh shifting, delayed engagement, or getting stuck in gear.
- ✔ No-Start Condition: In severe cases, the ECM may fail to activate the fuel pump or ignition coils, preventing the engine from starting at all.
- ✔ Intermittent Electrical Issues: Fans running constantly or other strange electronic behavior can sometimes be traced back to a faulty main computer.
Plug-and-Play Solution with VIN Programming
The biggest challenge when replacing a modern vehicle computer is programming. This unit eliminates that obstacle. We handle the complex part for you. By flashing the module with your vehicle’s VIN, we ensure all factory settings, anti-theft information (VATS/Passlock), and powertrain calibrations are correctly loaded. While in most cases this allows for a direct installation, some GM vehicles may require a simple security relearn procedure, which can be done without special tools and typically takes about 30 minutes. Instructions are readily available online or in your service manual.
This module is a direct replacement for service number 12607096 and is also interchangeable with the following part numbers: 12590032, 12602044, 12603530, 12605843, 12630457, and 19210737. While this listing is focused on the 2008 Lucerne Engine Module, it also fits an extensive range of other GM vehicles including the Cadillac DTS, Chevy Impala, Pontiac G6, and GMC Envoy. Always verify your original part number to ensure perfect compatibility.
Frequently Asked Questions
How do I provide my VIN for programming?
After you complete your purchase, you can send us a message with your 17-digit VIN. We cannot ship the module until we receive this information, as the programming is essential for the part to function in your vehicle.
Is this a simple plug-and-play installation?
Yes, for most vehicles. Because we pre-program it to your VIN, you can typically install it and start the car. Some models may require a security relearn procedure, which involves a series of key cycles. This procedure does not require any special scan tools.
Will this fix my specific problem?
This module will correct any issues directly caused by a faulty ECM. It’s crucial to have your vehicle properly diagnosed to ensure the ECM is the root cause, as other failing sensors can sometimes mimic ECM symptoms.
What is the warranty on this part?
This part comes with our standard warranty against defects in materials and workmanship. Please see our store’s warranty page for complete details and duration.
Does this ECM have the latest software?
Absolutely. We flash each module with the most current and stable software version available from General Motors for your specific VIN. This ensures optimal performance and includes any drivability improvements GM has released.