Restore Peak Performance to Your GM Vehicle
Is a persistent check engine light, rough idle, or stalling issue causing you endless frustration? A failing Engine Control Module (ECM) can disrupt your vehicle’s entire operation, leading to poor fuel economy, failed emissions tests, and a car you can’t rely on. This direct-fit replacement ECM, compatible with part number 12651994 and others, is the definitive solution to get your vehicle running smoothly and reliably again.
The biggest challenge with replacing a modern ECM isn’t just finding the right part; it’s ensuring it’s correctly programmed for your specific car. We eliminate that expensive and time-consuming dealership visit. Simply provide your vehicle’s VIN during checkout, and our expert technicians will flash this module with the latest GM-certified software and all your vehicle’s unique parameters. It arrives at your door ready for a straightforward installation, saving you time, money, and stress. This is the smart, efficient way to solve complex engine management problems.
Common Symptoms & Your Direct-Fit Solution
If you’re experiencing any of the following, a faulty ECM is the likely culprit. This unit is designed to resolve these exact issues:
- Check Engine Light (CEL) with codes like P0601, P0606, or U0100
- Engine stalling, stumbling, or misfiring
- Poor acceleration and reduced power
- Decreased fuel efficiency
- Vehicle won’t start or has intermittent starting problems
- Communication issues with diagnostic scan tools
Installing our Programmed 12651994 ECM is the most effective way to correct these faults and restore the precision engineering your GM vehicle was designed with.
Features & Tangible Benefits
- ✔ Plug-and-Play Installation: Arrives pre-programmed to your specific VIN. No additional, expensive programming is required.
- ✔ Latest GM Software Updates: We flash the module with the newest software available, often improving performance and efficiency beyond the original factory settings.
- ✔ Cost-Effective Dealership Alternative: Get the same quality programming and a reliable part for a fraction of the price of a dealership repair.
- ✔ Broad Model Compatibility: Replaces multiple part numbers (12651994, 12643248, 12652814, AA69) for a wide range of Buick, Cadillac, Chevy, and GMC models.
- ✔ Restored Engine Health: Corrects issues that cause poor performance, ensuring a smoother, more responsive, and efficient drive.
- ✔ Peace of Mind: This unit is backed by our one-year replacement warranty.
An Expert Technician’s Tip: We often see vehicles come in with persistent, hard-to-diagnose issues that mechanics have chased for weeks. In many cases, after all the sensors and wiring have been checked, the root cause is a failing processor within the ECM itself. A simple swap with a correctly programmed unit like this one can resolve multiple fault codes at once and make the car run like new. Don’t overlook the brain of the operation—a healthy ECM is critical for a healthy engine.
Take control of your repair and get your vehicle back on the road with confidence. By ordering our Programmed 12651994 ECM, you’re not just buying a part; you’re investing in a reliable, pre-configured solution that restores your vehicle’s performance and your peace of mind.
Frequently Asked Questions
Do I need to do any programming myself?
No. This ECM comes fully programmed to your vehicle’s specific VIN. In most cases, it is a plug-and-play installation. Some vehicles may require a simple security or CASE relearn procedure which can be done with a capable scan tool, but the core programming is complete.
How do I provide you with my VIN?
After you complete your purchase, you will need to send us your 17-digit Vehicle Identification Number (VIN). You can typically add it as a note during checkout or send it to us in a message referencing your order number. We cannot ship the part until we receive your VIN.
Is this a new or used part?
This is a high-quality, inspected, and tested recycled OEM part. Each unit is verified to be fully functional before being programmed with the latest software for your vehicle, ensuring OEM-level performance and reliability.
My original part number isn’t an exact match, but it’s on the list. Will it work?
Yes. The part numbers listed (12651994, 12643248, 12652814, AA69) are interchangeable. As long as your original part number is on our cross-reference list and we program it to your VIN, it will function correctly in your vehicle.
What does the one-year warranty cover?
This unit is backed by our one-year replacement warranty. This covers the part itself in the event of failure during the warranty period. It is a replacement warranty for the hardware.