Is Your GM Vehicle Running Rough, Stalling, or Refusing to Start?
A failing Engine Control Module (ECM) can be the source of countless frustrating and difficult-to-diagnose issues. From a persistent Check Engine Light to a car that won’t communicate with a scan tool, a faulty engine computer can bring your daily routine to a halt. Don’t let confusing symptoms and the threat of an expensive dealership repair bill cause you any more stress. This thoroughly tested, genuine GM 12655007 ECM is the reliable, cost-effective solution you need to get your vehicle running perfectly again.
Common Symptoms & Your Solution
If you’re experiencing any of the following, a failing ECM is the likely culprit:
- Check Engine Light is on with no clear cause
- Vehicle has a “no-start” or “hard-start” condition
- Rough idling, stalling, or poor engine performance
- Noticeable decrease in fuel economy
- Scan tool cannot communicate with the ECM
- Diagnostic Trouble Codes (DTCs) such as P0601, P0602, P0606, or other internal processor fault codes
This unit is your direct-fit, plug-and-play solution. We take the guesswork and complexity out of the repair by professionally programming this 12655007 ECM to your vehicle’s specific Vehicle Identification Number (VIN) before it ships. This ensures all factory settings and performance parameters are perfectly matched to your car, truck, or SUV.
Features & Tangible Benefits
- âś” VIN-Programmed for Your Vehicle: No need for an expensive trip to the dealer. This module arrives ready for installation, saving you time and hundreds of dollars in programming fees.
- âś” Latest GM Software Updates: We flash the unit with the newest software available from General Motors, ensuring optimal performance, fuel efficiency, and reliability.
- âś” Genuine OEM Component: This is a used, genuine GM part, guaranteeing perfect fitment and communication with your vehicle’s other electronic systems—no compatibility issues.
- âś” Restored Engine Performance: Eliminate rough running, hesitation, and stalling. Enjoy the smooth, responsive, and efficient operation you expect from your vehicle.
- âś” Cost-Effective Repair: Get a dependable, programmed ECM at a fraction of the cost of a new unit from the dealership.
- âś” This unit is backed by our one-year replacement warranty.
An Expert’s Insight: The Dealership Alternative
As a technician with over two decades of experience, I’ve seen countless vehicle owners get stuck between a rock and a hard place with a bad ECM. The typical process involves towing your vehicle to a dealer, paying for diagnostics, waiting for a new part to arrive, and then paying a premium for them to program it. Our service completely changes that. By sending you a pre-programmed 12655007 ECM, we empower you or your trusted mechanic to perform the repair efficiently. You’re not just buying a part; you’re buying a streamlined solution that puts you back in control and gets you back on the road with confidence.
Frequently Asked Questions
What information do I need to provide for programming?
After you complete your purchase, you will need to send us your vehicle’s 17-digit VIN. We cannot ship the part until we have this information, as the programming is specific to your exact vehicle.
Is this a new part?
No, this is a high-quality, used OEM computer that has been carefully removed from a salvaged vehicle. Each unit is inspected and tested to ensure it is fully functional and ready for programming and installation.
Will I need to do anything else after installing this ECM?
In many cases, a security relearn procedure (also known as a Passlock or anti-theft relearn) may be required after installation. This is a simple procedure that can typically be done without special tools and takes about 30 minutes. Instructions are widely available online for your specific model.
How do I know if this ECM will fit my vehicle?
This ECM, and its interchangeable part numbers, fits a very wide range of GM vehicles. Please carefully review the detailed fitment list provided on this page. Matching your vehicle’s make, model, year, and engine size is the best way to confirm compatibility.
What does “plug and play” mean?
It means that because we have already programmed the computer to your car’s VIN, the most difficult and expensive step is already done. Once you install it and perform any necessary security relearn, the vehicle should start and run correctly without needing a trip to the dealership for software work.