**Upgrade Your 2009-2013 Buick Regal 2.4L with a Reliable, Plug-and-Play ECU (Part #12637797)**

Is your 2009 to 2013 Buick Regal 2.4L experiencing performance issues, warning lights, or starting problems? The culprit is often the Engine Control Unit (ECU), also known as the engine computer, PCM, or module. Before you spend a fortune on a brand-new unit from the dealership, we offer a smart, cost-effective solution.

We provide a fully tested, used OEM ECU, part number **12637797**, specifically designed for the 2009-2013 Buick Regal with the 2.4L engine. This is the exact original equipment module that your vehicle left the factory with, ensuring perfect compatibility with your car’s engine, transmission, and all related systems.

**Why Choose Our ECU?**

* **Perfect Fit & Direct Compatibility:** This ECU is a direct plug-and-play replacement for your vehicle. There is no need for expensive or complex programming. Simply install it, and your Regal will recognize it immediately, restoring communication between the engine, body control module, and other critical systems.
* **Significant Cost Savings:** A new ECU from a dealer can be prohibitively expensive. Our high-quality used unit offers the same performance and reliability at a fraction of the cost, providing exceptional value without compromising on function.
* **Fully Tested & Verified:** This module has been rigorously tested to ensure it is fully operational and ready for installation. We guarantee it will power up and communicate correctly with your vehicle’s network.
* **Solve Common Issues:** This ECU can resolve a wide range of problems, including:
* Engine misfires and rough idling
* Reduced power and poor acceleration
* Check Engine Light and other diagnostic trouble codes
* Starting and stalling issues
* Erratic transmission shifting

**Important Note on Condition:**

This is a used OEM part that shows visible signs of having been professionally repaired or reconditioned in the past. This is a common and accepted practice in the automotive industry to restore vital electronic components. The unit is fully functional and offers a reliable, budget-friendly alternative. We stand behind its operation.

Ideal for DIY enthusiasts, independent repair shops, and anyone looking for a smart repair solution, this ECU gets your Buick Regal back on the road quickly and affordably. Don’t let a faulty engine computer sideline your vehicle.

Restore the power, performance, and reliability of your Buick Regal today. Order this guaranteed-compatible ECU and experience a seamless repair process.