Restore Your Vehicle’s Reliability and Performance
Is your Buick or Pontiac plagued by a persistent Check Engine Light, rough idling, or unpredictable stalling? These frustrating symptoms often point to a failing Engine Control Module (ECM), the central computer of your vehicle. This replacement module is the definitive, hassle-free solution to restore your car’s smooth operation and your confidence on the road. We take the complexity out of the repair by pre-programming the unit to your specific Vehicle Identification Number (VIN) before it ever leaves our facility, ensuring it’s ready for installation right out of the box.
Common Symptoms & Your Solution
A faulty ECM can manifest in numerous ways, disrupting your driving experience and vehicle safety. If you’re experiencing any of the following, this part is your solution:
- Persistent Check Engine Light (CEL)
- Engine misfires or stumbling during acceleration
- Poor fuel economy
- Erratic or harsh transmission shifting
- Intermittent stalling or complete no-start conditions
- Communication error codes with other vehicle modules
This Programmed 12616866 PCM is the direct answer to these issues. By replacing the failing computer, you restore the precise calculations needed for optimal fuel delivery, ignition timing, and transmission control, bringing your engine back to its factory-specified performance.
Features & Benefits
- ✔ VIN-Programmed for You: Arrives ready for installation, flashed with the latest official GM software for your specific vehicle. This completely eliminates the need for an expensive trip to the dealership for programming.
- ✔ Restores Peak Performance: Corrects issues like poor fuel economy, rough idling, and hesitation by restoring precise control over your engine’s critical functions.
- ✔ Direct-Fit Replacement: Engineered as a direct replacement for part numbers 12616866, 12600930, 12619810, and 12509307, ensuring a perfect fit in the factory location under the air cleaner box.
- ✔ Solves Complex Electrical Issues: Resolves communication errors and false sensor readings that can trigger confusing and persistent dashboard warning lights.
- ✔ One-Year Warranty: This unit is backed by our one-year replacement warranty, giving you complete confidence in your repair.
Expert Insight: The Critical Role of VIN Programming
A common mistake we see is the installation of a used, non-programmed ECM. These modules are not interchangeable. They contain vital security information (like GM’s VATS anti-theft) and operational data specific to the original car’s options. Our mandatory VIN-flashing service is what makes this a successful repair. We ensure your new module communicates flawlessly with your car’s existing systems, preventing the no-start conditions and compatibility errors that plague improperly sourced parts. It’s the essential step that turns a complex electronic repair into a straightforward one.
By choosing our Programmed 12616866 PCM, you’re not just buying a part; you’re investing in a reliable, expertly prepared solution designed to get your car back on the road quickly and correctly.
Frequently Asked Questions
Do I need to have this part programmed by a dealer?
No. This is the main benefit of our service. We program the module to the VIN you provide before we ship it. It will arrive ready to be installed in your vehicle.
Where do I provide my vehicle’s VIN?
After you complete your purchase, you will need to send us your 17-digit VIN. We cannot ship your order until we receive this information, as it is required for the programming process.
Is this part difficult to install?
This ECM is located in the lower part of the air cleaner box. For someone with basic mechanical skills, it is a manageable installation. It typically involves disconnecting the battery, removing the air cleaner assembly, unplugging the electrical connectors from the old module, and swapping it with the new one. We always recommend consulting a repair manual for your specific vehicle.
Will this fix my Check Engine Light?
If the Check Engine Light is on due to an internal failure of the original ECM, then this part will solve the problem. It is crucial to have your vehicle properly diagnosed to confirm the ECM is the root cause before ordering. This Programmed 12616866 PCM will resolve faults directly related to the module itself.
Will any additional procedures be required after installation?
In some cases, a Case/Crankshaft Position Sensor Relearn procedure may be necessary after installation. This can be performed by most professional scan tools and is a quick procedure for any qualified mechanic.
My original part has a different number. Will this still work?
This module is a direct replacement for several part numbers, including 12616866, 12600930, 12619810, and 12509307. As long as your vehicle and 3.8L engine are listed in the compatibility chart, this part will function correctly.