Is your vehicle suffering from frustrating, hard-to-diagnose issues like stalling, a persistent check engine light, or a complete no-start condition? A failing Engine Control Module (ECM) is often the hidden culprit, leaving you stranded and stressed. Restore your vehicle’s performance and reliability with this professionally programmed 12651994 ECM Engine Computer. We take the guesswork out of the repair by flashing the unit with the latest GM software updates, specifically matched to your vehicle’s unique VIN. This isn’t just a replacement part; it’s a direct solution to get you back on the road with confidence.
Common Symptoms & Your Solution
If you’re experiencing any of the following, a faulty ECM is the likely cause. This pre-programmed module is designed to be the definitive fix for:
- Erratic engine performance, including rough idling or misfires
- Drastic decrease in fuel economy
- Vehicle failing to start or stalling intermittently
- Transmission shifting problems or harsh shifts
- Check Engine Light (CEL) with communication-related Diagnostic Trouble Codes (DTCs) such as P0601, P0606, or U-codes
- Loss of power or sluggish acceleration
Features & Benefits
- ✔ VIN-Matched Programming: Your ECM arrives ready for a straightforward installation. We flash it using your VIN, ensuring it communicates perfectly with your vehicle’s systems, often eliminating the need for an expensive trip to the dealership.
- ✔ Latest GM Software: We load the most current factory software available for your vehicle. This can resolve underlying bugs, improve fuel efficiency, and optimize engine performance beyond the original specifications.
- ✔ Direct-Fit Replacement: Guaranteed to fit a wide range of GM vehicles, including the Orlando, CTS, Malibu, Acadia, and many more. This 12651994 ECM Engine Computer also replaces part numbers 12643248, 12652814, and AA69.
- ✔ Restored Drivability: By installing a correctly functioning and updated module, you’ll restore the crisp throttle response, smooth shifting, and overall reliability you expect from your vehicle.
- ✔ Peace of Mind: This unit is backed by our one-year replacement warranty. Drive with the assurance that your investment is protected.
Expert Insight: The “Ghost in the Machine” Fixed
We recently worked with a customer whose 2012 Acadia had an intermittent stalling issue that three different shops couldn’t solve. They had replaced the fuel pump and multiple sensors, wasting over a thousand dollars. The problem was a failing ECM that would overheat and lose communication. Once they installed our pre-programmed 12651994 ECM Engine Computer, the stalling vanished completely. It’s a powerful reminder that starting with the vehicle’s “brain” is often the fastest and most cost-effective path to a real solution.
Frequently Asked Questions
What do I need to do after I purchase?
After you complete your purchase, you must send us your vehicle’s 17-digit VIN (Vehicle Identification Number). We cannot program and ship your ECM without it. This ensures the module is a perfect match for your specific vehicle configuration.
Will any additional programming be required?
In most cases, no. Our VIN programming handles the primary setup. However, some vehicles may require a simple security or CASE relearn procedure, which can be performed with a capable scan tool. This is a standard step for many module replacements.
How do I find my part number?
Your original ECM’s part number is printed on a sticker directly on the module’s case. You can verify it by locating the ECM in your vehicle (often in the engine compartment). This unit is a direct replacement for part numbers 12651994, 12643248, 12652814, and AA69.
Is this a brand new part?
This is an excellent, fully tested, and inspected original equipment part that has been programmed with the latest software for your vehicle. It provides the same reliability and function as a new dealer part at a fraction of the cost.
Where is the ECM located on my vehicle?
The location varies by model. For many vehicles like the Orlando, Captiva Sport, and Malibu, it’s in the LH (driver’s side) engine compartment. For the CTS, it’s often on the RH side. On models like the Acadia and Traverse, it can be found behind the fan shroud. Always consult a service manual for your specific vehicle if you are unsure.