Get Your Trailblazer Running Smoothly Again
Is your 2006 Chevy Trailblazer suffering from frustrating and unpredictable issues like a persistent check engine light, rough idling, stalling, or erratic transmission shifting? These are classic signs of a failing Powertrain Control Module (PCM), the electronic brain of your vehicle. Don’t let a faulty computer keep you off the road. This professionally programmed PCM is the reliable, cost-effective solution to restore your truck’s performance and your peace of mind.
Common Symptoms & Your Solution
A failing PCM can cause a wide range of problems that can be difficult to diagnose. If you’re experiencing any of the following, a faulty module is the likely culprit:
- Check Engine Light with communication error codes (like P0601, P0606) or other system faults.
- Engine Stalling or Misfiring for no apparent reason, especially after warming up.
- Harsh or Incorrect Shifting from the automatic transmission.
- No-Start Condition where the engine cranks but won’t fire up.
- Poor Fuel Economy and a noticeable loss of engine power.
- Communication issues with diagnostic scan tools.
This replacement 2006 Trailblazer PCM is the definitive fix for these issues. We take all the guesswork out of the repair by programming the unit specifically for your vehicle using your VIN. This ensures perfect compatibility with your truck’s factory settings and options, making the installation process as simple as possible.
Features & Tangible Benefits
- โ Ready for Installation: We program the module to your vehicle’s unique VIN before shipping. This means no expensive trips to the dealership for additional programming.
- โ Latest GM Software: Your PCM is flashed with the most current GM software updates, which can resolve factory bugs and improve overall engine and transmission performance.
- โ Direct-Fit Replacement: Guaranteed to be a perfect fit and replacement for a long list of original part numbers, including 12569773, 12588650, 12591647, 12604438, and more.
- โ Restored Drivability: By replacing the failing computer, you’ll solve those perplexing electrical gremlins and restore the smooth, reliable operation you depend on.
- โ Purchase with Confidence: This unit is backed by our one-year replacement warranty.
Expert Insight: Why Do These PCMs Fail?
As a technician with over two decades of experience, I’ve seen countless failures on the GMT360 platform (Trailblazer, Envoy, etc.). The PCM is typically mounted in the engine bay, where it’s exposed to constant heat cycles and engine vibration. Over years of service, this environment can cause microscopic cracks in the internal solder joints and damage sensitive electronic components on the circuit board. This leads to the intermittent and unpredictable faults you’re likely experiencing. Our units are meticulously inspected to ensure they provide a durable and long-lasting solution to this common problem.
Frequently Asked Questions
How do I provide my vehicle’s VIN?
After you complete your purchase, simply reply to your order confirmation email with your vehicle’s 17-digit VIN. We cannot program and ship your module without it.
Is any additional programming needed after installation?
In most cases, no. Because we program the 2006 Trailblazer PCM to your VIN, it is ready to be installed. Some vehicles may require a Crankshaft Position Sensor Relearn (also known as a CASE Relearn), which can be performed with a capable bidirectional scan tool or by a local repair shop.
Is this the correct part for my vehicle?
This module fits the 2006 Trailblazer, Envoy, Rainier, and other GM models with the 4.2L engine, as well as several other vehicles listed in the fitment chart. The best way to confirm is to match the part number from your original module to one of the numbers listed in this description. If it matches, you’ve found the right part.
Will this fix my check engine light?
If the check engine light is caused by an internal PCM failure (common codes include P0601, P0602, P0606), then this replacement module is the correct solution. However, it’s always essential to ensure your vehicle has been properly diagnosed, as other sensor or wiring issues can also trigger a check engine light.
What is the warranty for this computer?
This unit is backed by our one-year replacement warranty, ensuring you can buy with complete confidence.