Get Your Trailblazer Running Like New Again
Is your 2006 Trailblazer EXT suffering from frustrating and unpredictable issues? A failing Powertrain Control Module (PCM), the central computer of your vehicle, is often the hidden cause of problems that can leave you stranded. Symptoms like a persistent check engine light, poor fuel economy, harsh transmission shifts, or even a no-start condition can bring your dependable SUV to a halt. This module is the definitive, plug-and-play solution to restore your vehicle’s performance and reliability.
Common Symptoms & Your Solution
If you’re experiencing any of the following, a faulty PCM is the likely culprit:
- Engine misfires or stalling
- Erratic or harsh automatic transmission shifting
- Drastically reduced fuel mileage
- Vehicle won’t start, but the battery and starter are good
- Check Engine Light with communication error codes (like P0601, P0606)
- Failure to pass an emissions test
Don’t let a bad computer dictate your vehicle’s health. This replacement module is the core of the repair, programmed specifically for your vehicle to eliminate guesswork and costly dealership programming fees. We provide the permanent fix for your 2006 Trailblazer EXT PCM problems, getting you back on the road quickly and confidently.
Features & Tangible Benefits
- ✔ Plug & Play Installation: We pre-program this module to your vehicle’s exact VIN. It arrives ready to install right out of the box, requiring no expensive trip to the dealership for programming.
- ✔ Optimized Performance: Flashed with the newest updates from GM, this computer corrects common factory bugs and enhances fuel efficiency, emissions control, and transmission shift patterns for a smoother, more responsive drive.
- ✔ Tested for Reliability: Every module undergoes a comprehensive inspection and testing process on a live vehicle simulator to ensure it meets or exceeds original equipment standards. You get a dependable part you can count on.
- ✔ Guaranteed Compatibility: This unit is a direct replacement for a wide range of original part numbers (including 12569773, 12591647, 12600818, and more), ensuring perfect communication with your vehicle’s existing systems.
- ✔ Purchase with Confidence: This unit is backed by our one-year replacement warranty.
An Expert’s Note: We had a customer with a 2006 Hummer H3 that had an intermittent ‘no-crank’ issue that stumped two different shops. They replaced the battery and starter to no avail. The real culprit was a failing processor inside the original PCM that would randomly fail when hot. Installing our pre-programmed module solved the problem in under 20 minutes, saving them hundreds in wasted diagnostic fees. Often, the most complex-seeming electrical gremlins trace back to the vehicle’s central computer, and a quality, pre-programmed 2006 Trailblazer EXT PCM is the fastest path to a solution.
Frequently Asked Questions
Do I need to do any programming myself?
Absolutely not. We handle all the programming before we ship the part. Using the VIN you provide, we flash the module with your vehicle’s specific calibration files and the latest GM software. It is a true plug-and-play solution.
How do I provide my VIN?
After you complete your purchase, you can add your VIN to the ‘notes’ section of your order. If you forget, don’t worry! We will contact you via email to request it before we program and ship your module.
Will I need to perform a security relearn procedure?
Yes, on most GM vehicles of this era, a simple security relearn (often called the Passlock or anti-theft relearn) is required. It’s a simple procedure that takes about 30 minutes and involves turning the key on and off in a specific sequence. We include easy-to-follow instructions with your order.
Will this fix my check engine light?
This module will resolve any check engine light and Diagnostic Trouble Codes (DTCs) that are directly caused by a faulty PCM. It is essential to have your vehicle properly diagnosed to confirm the PCM is the point of failure. This part will not fix issues related to other failed sensors or mechanical components.
Is this part compatible with other vehicles?
Yes, this 2006 Trailblazer EXT PCM is also the correct computer for a wide range of other GM vehicles from 2004-2006, including the Chevy Colorado, GMC Canyon, Buick Rainier, Hummer H3, and Isuzu Ascender equipped with the 4.2L engine. Please verify the part number or contact us to confirm fitment.