Restore Your Vehicle’s Brain and Get Back on the Road
Is your Buick LaCrosse, or another compatible GM vehicle, suffering from baffling electrical issues, poor performance, or a persistent Check Engine Light? A failing Engine Control Module (ECM) is often the culprit, acting like a broken central nervous system for your car. This genuine, used GM ECM is the definitive, hassle-free solution. We professionally program it to your vehicle’s unique VIN before it leaves our facility, ensuring it’s ready for installation right out of the box. Stop guessing and start driving with confidence again by replacing the faulty core of your engine management system with this reliable, pre-programmed 2013-2016 Buick LaCrosse ECM.
Common Symptoms & Your Solution
A failing ECM can manifest in numerous frustrating ways. If you’re experiencing stalling, rough idling, poor fuel economy, failure to start, or diagnostic trouble codes (DTCs) like P0606 (ECM Processor Fault), this module is your answer. Instead of paying for expensive diagnostics and dealership programming fees, this unit arrives ready to work, communicating perfectly with your vehicle’s other modules from the moment it’s connected. It’s the smart, efficient way to solve complex engine management problems.
- ✔ Plug & Play Installation: Arrives pre-programmed to your specific VIN. No extra trips to the dealer for expensive flashing are required.
- ✔ Restored Performance: Flashed with the latest GM software updates to ensure optimal engine performance, fuel efficiency, and emissions control.
- ✔ Cost-Effective Repair: Get the reliability of a genuine GM part without the brand-new price tag. A smart financial choice for a critical repair.
- ✔ Broad GM Compatibility: While perfect for the LaCrosse, this ECM is a direct fit for a wide range of GM cars, trucks, and SUVs, including the Acadia, Malibu, Equinox, and CTS.
- ✔ Guaranteed Functionality: This unit is backed by our one-year replacement warranty.
Expert Insight: The Power of Proper Programming
As a technician, I’ve seen countless vehicle issues caused by improperly matched control modules. Simply swapping an ECM from another vehicle without correct VIN programming can lead to a no-start condition, immobilizer conflicts, and incorrect transmission shifting. Our process eliminates that risk entirely. We don’t just ship a part; we provide a fully integrated solution. By matching the software and VIN to your exact vehicle, we ensure every parameter—from fuel trim to transmission strategy—is correct, giving you a seamless and successful repair the first time.
Take control of your repair and get your vehicle running like new. This 2013-2016 Buick LaCrosse ECM is more than just a part; it’s a complete solution designed to save you time, money, and stress. After purchase, simply provide us with your VIN, and we’ll handle the rest, shipping you a part that’s ready to restore your vehicle’s health. It’s time to clear that check engine light for good.
Frequently Asked Questions
Do I need to do any programming myself?
No. This ECM comes fully programmed to your vehicle’s VIN. It is a plug-and-play solution that does not require any additional flashing or programming from a dealership.
How do I provide my Vehicle Identification Number (VIN)?
After you complete your purchase, you will need to send us your 17-digit VIN. You can typically add it as a note during checkout or reply to your order confirmation email. We cannot ship the part until we receive your VIN.
Is this a new part?
No, this is a genuine, used OEM part that was carefully recovered from a salvaged vehicle. Each unit is inspected and tested to ensure it is fully functional before being programmed and shipped.
My original part number is different. Will this still work?
Yes, this ECM is a direct replacement for part numbers 12653998, 12633555, 12655007, and 12644446. We program the module based on your VIN, which ensures it functions correctly for your specific make, model, and options, regardless of which of these part numbers was originally installed.
What kind of warranty is included?
This unit is backed by our one-year replacement warranty, giving you confidence and security in your purchase.
Will this ECM require a security or key relearn procedure?
In some GM vehicles, a simple security relearn procedure may be necessary after installation. This can typically be done without special tools and involves a sequence of key turns. We can provide instructions if needed.