Get Your GM Truck or SUV Back on the Road, Fast.
Is your vehicle suffering from a persistent check engine light, erratic shifting, or a frustrating no-start condition? A faulty Powertrain Control Module (PCM) is often the culprit, leaving you stranded and stressed. This is the definitive, plug-and-play solution you’ve been searching for. This module is professionally programmed to your vehicle’s specific VIN with the latest GM software updates, ensuring a seamless installation and restoring the performance and reliability you depend on. Stop guessing and start driving with a properly functioning engine computer designed for your exact vehicle. Finding a reliable 2006 GMC Envoy PCM 12606399 can be a challenge, but this unit is tested, programmed, and ready to get your vehicle running perfectly again.
Common Symptoms of a Failing PCM & Your Solution
If you’re experiencing any of the following issues, a failing engine computer is the likely cause. This pre-programmed module is designed to correct these problems directly:
- Check Engine Light (CEL) Illumination: Particularly for codes like P0601, P0602, P0606, or other internal controller errors.
- Engine Stalling or Misfiring: The engine may stall unexpectedly while driving or at idle.
- No-Start Condition: The engine cranks but refuses to start due to a lack of fuel or spark commands from the PCM.
- Poor Performance & Fuel Economy: A noticeable drop in power, acceleration, and miles per gallon.
- Erratic Automatic Transmission Shifting: Harsh shifts, delayed engagement, or getting stuck in gear.
- Communication Issues: Your scan tool may be unable to communicate with the PCM.
Features & Benefits
- ✔ Plug-and-Play Installation: Arrives pre-programmed to your vehicle’s VIN. No expensive trip to the dealership for coding is required.
- ✔ Latest GM Software: Flashed with the most current factory updates to improve performance, efficiency, and drivability over the original programming.
- ✔ Guaranteed Compatibility: Programmed specifically for your vehicle’s options and systems, ensuring all components work together as intended.
- ✔ Cost-Effective Solution: A reliable and affordable alternative to a costly new computer from a dealer.
- ✔ Direct-Fit Replacement: This 2006 GMC Envoy PCM 12606399 is engineered to be a direct replacement for a wide range of original part numbers, ensuring a perfect fit.
- ✔ Peace of Mind: This unit is backed by our one-year replacement warranty.
An Expert’s Note on VIN Programming
“Many people think they can just grab a used computer from a salvage yard, but on these GM vehicles, it’s not that simple. The PCM is tied directly to the vehicle’s anti-theft system (VATS/Passlock) and specific options like transmission type and emissions equipment. Without correct VIN programming, the vehicle simply will not start, or will run very poorly. Our process ensures the module we send you is a perfect digital match for your vehicle, saving you the headache and hidden costs of a dealer visit for security relearns or programming.”
Take control of your repair and restore your vehicle’s health. This isn’t just a part; it’s a comprehensive solution that gets you back on the road with confidence. By providing us with your VIN, you ensure that the 2006 GMC Envoy PCM 12606399 you receive is perfectly matched and ready for immediate installation.
Frequently Asked Questions
What is a PCM and what does it do?
The Powertrain Control Module (PCM), often called the Engine Control Unit (ECU), is the central computer of your vehicle. It controls all aspects of engine and transmission function, including fuel injection, spark timing, and shift points, to ensure optimal performance, fuel economy, and emissions.
Is this module truly plug-and-play?
Yes. Because we program the module using the VIN you provide, it comes ready to install without the need for any additional programming. In some rare cases, a security relearn procedure may be required, which can be done without any special tools and instructions are readily available.
Where do I provide my VIN?
After you complete your purchase, you will need to send us your 17-digit Vehicle Identification Number (VIN). We cannot ship your part until we receive this information, as it is essential for the programming process.
Will this fix my specific problem?
This PCM will correct issues directly caused by a faulty module. While the symptoms listed are common indicators of PCM failure, we always recommend a proper diagnosis by a qualified mechanic to confirm the PCM is the root cause of your vehicle’s issues before ordering.
My original part number isn’t 12606399, will this still work?
Yes. This module is a direct replacement for all the part numbers listed in the description. GM often updates part numbers over time. As long as your original part number is on our cross-reference list, this unit is the correct, updated replacement.
What if I need help after installation?
Our team of experts is here to assist you. If you encounter any issues or have questions during the installation process, please don’t hesitate to contact our customer support for guidance.