Is Your Vehicle Running Rough, Stalling, or Showing a Check Engine Light?
A failing Engine Control Module (ECM) can be the source of countless frustrating and difficult-to-diagnose issues. It can disrupt everything from fuel economy and idle stability to starting and overall performance. Don’t let a faulty computer keep you off the road. This fully programmed ECM is the definitive solution to restore your vehicle’s original performance and reliability, arriving at your door ready for a straightforward installation.
Common Symptoms & Your Solution
If you’re experiencing any of the following, a failing engine computer may be the cause. This unit is designed to be the direct solution for these problems:
- Persistent Check Engine Light (CEL)
- Diagnostic Trouble Codes (DTCs) like U0100, P0601, P0606
- Unexplained stalling or hesitation
- Poor engine performance and reduced power
- Decreased fuel efficiency
- Vehicle won’t start or has intermittent starting issues
- Communication errors with diagnostic scan tools
By replacing your old module with this pre-programmed 2012 Buick LaCrosse ECM 12652814, you are installing a reliable, updated component that corrects these core electronic failures and gets your vehicle operating as the manufacturer intended.
Features & Benefits
- ✔ VIN-Specific Programming: Arrives flashed with the latest GM software updates, matched precisely to your vehicle’s VIN. No expensive trips to the dealership for programming are required.
- ✔ Plug-and-Play Design: Engineered for a direct fit and simple installation. In most cases, you can have your vehicle back on the road in under an hour.
- ✔ Restored Performance: Corrects engine management issues to restore lost power, improve fuel economy, and ensure smooth operation.
- ✔ Broad Compatibility: This single unit is a direct replacement for multiple part numbers, including 12651994, 12643248, and 12652814.
- ✔ Peace of Mind: This unit is backed by our one-year replacement warranty.
An Expert’s Note on Engine Computers
As a technician with over 20 years of experience, I’ve seen countless drivers chase expensive sensor and component replacements when the real culprit was the ECM all along. A modern engine computer manages dozens of complex systems simultaneously. When its internal logic fails, it can send out confusing signals that mimic other problems. That’s why a properly diagnosed and correctly programmed ECM is so critical. This isn’t just a part; it’s the brain of your engine. By providing us with your VIN, you ensure this new brain has the exact ‘memories’ and instructions your specific vehicle needs to operate flawlessly.
Take control of your repair and restore your car’s reliability. This 2012 Buick LaCrosse ECM 12652814 is the most efficient and dependable way to solve complex electronic engine issues and get back to driving with confidence.
Frequently Asked Questions
Do I need to program this ECM?
No. This unit arrives fully programmed to your vehicle’s specific VIN. Simply provide your VIN to us after purchase, and we handle all the flashing and software updates before it ships.
What information do you need from me?
After you complete your purchase, we will need the 17-digit Vehicle Identification Number (VIN) from your vehicle. This is typically found on your driver’s side dashboard (visible through the windshield) or on your vehicle’s registration.
Is the installation difficult?
The physical installation is a direct, bolt-in replacement. While it is designed to be plug-and-play, some vehicles may require a simple security or anti-theft relearn procedure, which can often be done without special tools. We recommend consulting a service manual for your specific model.
Will this fix my car’s specific problem?
This ECM is guaranteed to be a functional, correctly programmed replacement for a faulty module. While it resolves all issues related to a failed ECM, it’s essential that your vehicle has been properly diagnosed to confirm the original ECM is the source of the problem.
Which part numbers does this ECM replace?
This module is a direct replacement for several part numbers, including 12651994, 12643248, 12652814, and AA69, ensuring wide compatibility across many GM models.
What kind of warranty is included?
This unit is backed by our one-year replacement warranty, giving you confidence in your purchase.