Is your truck giving you headaches? Get the definitive fix.
If your 2004-2006 Chevy Colorado, GMC Canyon, or other compatible GM truck is suffering from frustrating issues like a persistent check engine light, erratic shifting, poor fuel economy, or a no-start condition, a failing Powertrain Control Module (PCM) is often the culprit. Don’t waste time and money chasing symptoms. This fully programmed PCM is the central command unit for your engine and transmission, and we deliver it directly to you, ready for a straightforward installation.
Common Symptoms & Your Solution
A failing computer can manifest in numerous ways, often mimicking other mechanical problems. If you’re experiencing any of the following, this module is your solution:
- Unexplained Check Engine Light with codes like P0601, P0602, P0606
- Harsh or delayed transmission shifting
- Engine stalling, stumbling, or rough idling
- Drastic decrease in fuel mileage
- Complete no-start or intermittent starting problems
- Communication errors with other vehicle modules (U-codes)
This isn’t just a replacement part; it’s a restoration of your truck’s reliability. We use your vehicle’s VIN to flash this unit with the latest, most stable software updates from GM, ensuring it communicates flawlessly with your specific vehicle. This is the key to solving those deep-seated electronic issues and getting your truck’s performance back to factory specifications. Our use of a programmed 2004-2006 Colorado PCM ensures that the complex integration process is handled by our experts before the part ever leaves our facility.
Features & Benefits
- ✔ Ready for Installation: No need for an expensive trip to the dealership. We flash this module with your truck’s specific VIN and the latest GM-certified software, ensuring it’s ready to install right out of the box.
- ✔ Restored Performance & Efficiency: A faulty PCM can wreak havoc on your engine’s performance and fuel economy. This fully tested unit restores crisp shifting, smooth idling, and optimal engine operation.
- ✔ Guaranteed Compatibility: This is a genuine OEM computer, ensuring a perfect fit and seamless communication with your vehicle’s other electronic systems. It directly replaces a wide range of part numbers, including 12569773, 12591647, and 12606398.
- ✔ Solves Complex Electrical Gremlins: Stop chasing sensor and wiring issues. A fresh, correctly programmed 2004-2006 Colorado PCM often resolves multiple, seemingly unrelated error codes at once.
- ✔ Peace of Mind Included: This unit is backed by our one-year replacement warranty. Drive with confidence knowing you’re covered.
From the Technician’s Bench: The ‘Brain Transplant’ Done Right
Over my 20 years in the bay, I’ve seen countless hours wasted trying to diagnose bizarre electronic issues on these GM trucks. The problem is that the PCM is the ‘brain,’ and when it starts to fail, it can send out confusing signals that make good sensors look bad. The real secret to a successful repair is not just swapping the box, but ensuring the new one is perfectly programmed before it’s installed. An improperly programmed module can cause more problems than it solves, from anti-theft lockouts to transmission damage. By providing a programmed 2004-2006 Colorado PCM matched to your VIN, we eliminate that risk entirely, turning a potentially complex electronic job into a simple bolt-in repair.
Frequently Asked Questions
Do I need to do any programming or flashing myself?
Absolutely not. This PCM arrives fully programmed to the VIN you provide during checkout. The only thing you may need to do is a simple security relearn procedure, which takes about 10-15 minutes and requires only your key.
What information do you need from me?
After you place your order, we will need the 17-digit Vehicle Identification Number (VIN) from your truck. You can typically find this on your driver’s side dashboard (visible through the windshield) or on the driver’s door jamb sticker.
Will this fix my specific problem or check engine light?
If your vehicle’s issues and diagnostic trouble codes (DTCs) point to a faulty PCM, this part is the correct solution. It is crucial to have the vehicle properly diagnosed to confirm the PCM is the root cause before ordering.
Is this compatible with my Hummer H3 or Trailblazer?
Yes, this computer fits a wide range of GM vehicles from 2004-2006, including the Hummer H3, Chevy Trailblazer, GMC Envoy, and more. Please check the detailed fitment list on this page to confirm it matches your specific year, make, and model.
What is the security relearn procedure?
For most of these GM vehicles, the security relearn is simple. After installing the new PCM, turn the key to the ‘ON’ position (without starting the engine) for 10 minutes, then turn it ‘OFF’ for 10 seconds. Repeat this cycle two more times for a total of three 10-minute cycles. The vehicle should then start and run normally.