Is your 2006 Buick Lucerne running poorly, stalling, or displaying a persistent check engine light? A failing Engine Control Module (ECM) is often the culprit. The ECM is the brain of your vehicle, controlling everything from fuel mixture and ignition timing to transmission shifting. When it fails, it can cause a cascade of frustrating and difficult-to-diagnose problems. This direct-fit Engine Control Module is the definitive solution to restore your vehicle’s performance, reliability, and efficiency.
We take the guesswork and hassle out of the repair process. Unlike a generic module from a dealership or parts store, this unit arrives at your door pre-programmed to your vehicle’s specific Vehicle Identification Number (VIN). This means we load the latest GM-certified software and calibrations for your exact car before it ships. This critical step ensures seamless communication between the new module and all other systems in your Lucerne, making installation straightforward and eliminating the need for an expensive trip to the dealer for programming.
Common Symptoms of a Failing ECM
- ✔ Persistent Check Engine Light (CEL) with various trouble codes.
- ✔ Engine stalling, stumbling, or hesitating during acceleration.
- ✔ Noticeable decrease in fuel economy.
- ✔ Rough or erratic engine idling.
- ✔ Difficulty starting the engine or a complete no-start condition.
- ✔ Automatic transmission shifting issues or harsh shifts.
- ✔ Communication errors with diagnostic scan tools.
From the Diagnostic Bay
We had a 2006 Lucerne come into the shop with a list of complaints that had other mechanics stumped. The owner described intermittent stalling at red lights, a check engine light that would come and go, and occasional hard shifting. We checked for vacuum leaks, tested sensors, and couldn’t find a consistent mechanical fault. After hooking up our professional scan tool, we noticed communication dropouts with the engine module. It turned out the original ECM had an internal processor fault that only acted up when warm. Replacing it with a VIN-programmed module like this one solved every single issue instantly. The customer was thrilled to have their smooth, reliable car back without paying dealership prices.
Why Choose Our Programmed 2006 Lucerne ECM?
This isn’t just a replacement part; it’s a comprehensive solution. By providing us with your VIN, you receive a module that is precisely matched to your vehicle’s factory specifications and includes all subsequent software improvements from GM. These updates can resolve drivability issues you may not have even realized were software-related. This module is a guaranteed fit and function for part number 12630457 and is also a direct replacement for service numbers 12590032, 12602044, 12603530, 12605843, 12607096, and 19210737, covering a vast range of GM vehicles.
Installation is designed to be as simple as possible. In most cases, you simply disconnect the battery, swap the old module with the new one, and reconnect the battery. Some GM vehicles may require a simple, key-on/key-off security relearn procedure to sync the new ECM with the anti-theft system. This procedure typically takes about 30 minutes and does not require any special tools. Get your vehicle back on the road quickly and confidently with a reliable, properly configured engine computer.
Frequently Asked Questions
Do I need to get this ECM programmed by a dealer?
No. The main benefit of our service is that we program the module to your car’s specific VIN before we ship it to you. It arrives ready for installation, saving you time and the high cost of dealership programming.
What is a security relearn procedure?
This is a simple process required by GM’s anti-theft system to recognize the new ECM. It usually involves a series of key turns and waiting periods, takes about 30 minutes, and can be done in your driveway without any special tools. Instructions are readily available online for your specific model.
Where do I find my vehicle’s VIN?
Your 17-digit 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.
My old ECM has a different part number. Will this still work?
Yes, if your vehicle is listed in the compatibility chart. This module, 12630457, is the modern service replacement for several older part numbers, including 12590032, 12602044, and others. We program it to function perfectly for your specific application.
Is this a plug-and-play part?
Yes, because we program it to your VIN, it is a plug-and-play installation electronically. You will just need to physically install it and perform the security relearn procedure if required by your vehicle.