Restore Peak Performance to Your GM Truck or SUV
Is your Trailblazer, Envoy, or Colorado running rough, shifting erratically, or showing a check engine light that just won’t go away? A failing Powertrain Control Module (PCM) is often the hidden culprit behind these frustrating and hard-to-diagnose issues. Stop chasing symptoms and replace the core of the problem with this professionally programmed engine computer. This isn’t just a replacement part; it’s a complete, ready-to-install solution designed to get your vehicle running reliably again.
Common Symptoms & Your Solution
A faulty engine computer can disrupt nearly every aspect of your vehicle’s operation. If you’re experiencing any of the following, this module is the definitive fix you need:
- Erratic or harsh transmission shifting
- Poor engine performance and reduced power
- Decreased fuel economy
- Engine stalling or difficulty starting
- Persistent Check Engine Light (CEL)
- Diagnostic Trouble Codes (DTCs) like P0601, P0602, or P0606
This 2006 Trailblazer EXT programmed PCM is the central command for your vehicle’s engine and transmission. Our process ensures it arrives at your door perfectly matched to your vehicle, loaded with the latest factory software for optimal performance and efficiency.
Features & Benefits
- ✔ Arrives Ready to Install: No trips to the dealer! This module is professionally programmed to your vehicle’s specific VIN before it ships.
- ✔ Loaded with the Latest GM Software: We flash the unit with the most current GM updates, ensuring all known bugs are fixed and performance is optimized.
- ✔ VIN-Matched for Guaranteed Compatibility: Providing your VIN guarantees a perfect electronic match, eliminating compatibility issues and ensuring all vehicle options function correctly.
- ✔ Plug & Drive Installation: The straightforward programming process means you can install it at home with basic tools, saving you hundreds in labor costs.
- ✔ One-Year Protection: This unit is backed by our one-year replacement warranty, giving you confidence in your repair.
A Mechanic’s Insight: We recently worked with a customer whose 2006 Envoy had a persistent P0601 ‘Internal Control Module Memory Check Sum Error’ code. They had already replaced two expensive sensors trying to solve the problem. Installing our pre-programmed PCM not only cleared the code for good but also restored the crisp, smooth transmission shifts they thought were lost to age. Don’t waste time and money on guesswork; when you have complex electronic issues, the problem is often the computer itself. Getting a quality, correctly flashed 2006 Trailblazer EXT programmed PCM is the key to a lasting repair.
Frequently Asked Questions
Do I need to do any programming or flashing myself?
Absolutely not. This module is a complete plug-and-drive solution. We handle all the programming based on the VIN you provide, so it’s ready for installation right out of the box. Simply disconnect the battery, swap the modules, and reconnect the battery.
Where do I provide my vehicle’s VIN?
After you complete your purchase, you will need to send us your 17-digit Vehicle Identification Number (VIN). We will provide clear instructions on how to do this. We cannot ship your part until we have programmed it with your VIN.
Is this compatible with other part numbers?
Yes. This module is a direct replacement for a wide range of part numbers, including 12569773, 12588650, 12591647, 12597776, 12606373, and many more listed in the description. Our VIN programming ensures it functions correctly regardless of the original part number.
What tools are needed for installation?
Installation is straightforward and typically only requires basic hand tools, such as a socket set to disconnect the battery terminals and remove the mounting bolts for the module. No special electronic equipment is needed.
Will this fix my check engine light?
If the check engine light is caused by a faulty PCM (common with codes like P0601), then yes, this part will resolve the issue. After installation, you may need to clear any stored codes with a standard OBD-II scanner, or they may clear after a few drive cycles.
How do I know for sure that my old PCM is bad?
While a professional diagnosis is always best, common signs of a failing PCM include multiple unrelated error codes, engine performance issues that can’t be traced to a specific sensor, and transmission shifting problems. If you’ve tested sensors and wiring, the PCM is the next logical component to address, and this 2006 Trailblazer EXT programmed PCM is the ideal solution.