Restore Peak Performance to Your GM Truck or SUV
Is your 2004-2006 Chevrolet Colorado, GMC Canyon, or Hummer H3 suffering from perplexing electrical issues, a persistent check engine light, or poor engine performance? The Powertrain Control Module (PCM), often called the vehicle’s brain, is the central command unit responsible for managing the engine, transmission, and other essential systems. When it fails, it can cause a cascade of problems that can be difficult to diagnose and frustrating to live with. This replacement PCM, part number 12569773, is the definitive solution to get your vehicle running reliably again.
This isn’t just a generic, off-the-shelf part. We take the guesswork out of the repair by programming this module specifically for your vehicle using your unique Vehicle Identification Number (VIN). This critical step ensures that the PCM has the correct software and calibrations for your truck’s specific engine, transmission, and options package. It arrives flashed with the latest updates directly from GM, often correcting factory bugs and improving overall performance and efficiency. This VIN-specific programming makes installation straightforward, getting you back on the road faster.
From the Diagnostic Bay
We had a 2005 GMC Canyon come into the shop with a classic case of what the owner thought was a bad PCM. The truck would randomly stall at red lights, the transmission shifted harshly, and the check engine light was on with a code for a lost communication with the TCM. He had already replaced two sensors with no luck. Before ordering a new module, we did a full systems check. It turned out that the main ground wire from the engine block to the firewall was corroded and barely making contact. A simple $5 ground strap and a good cleaning of the contact points solved all the issues. This is a great reminder: always check your main power and ground connections before condemning an expensive computer. A faulty ground can mimic a wide range of module failures.
Is Your 2004-2006 Colorado PCM Failing?
A failing Powertrain Control Module can manifest in numerous ways, from subtle annoyances to critical, no-start conditions. If you’re experiencing any of the following, a faulty PCM could be the culprit:
- ✔ Check Engine Light: The check engine light is illuminated, and you may have codes related to module communication (U-codes), sensor circuits, or processor faults (P06xx codes).
- ✔ No-Start or Hard-Start: The engine cranks but refuses to start, or takes an unusually long time to fire up. This can be due to the PCM not properly commanding the fuel injectors or ignition coils.
- ✔ Poor Engine Performance: You may notice a significant loss of power, rough idling, stalling, hesitation during acceleration, or a sudden drop in fuel economy.
- ✔ Erratic Transmission Shifting: The PCM plays a crucial role in transmission control. A failing module can cause harsh shifts, delayed engagement, or getting stuck in one gear (limp mode).
- ✔ Communication Issues: Your diagnostic scan tool may be unable to communicate with the PCM, which is a strong indicator of an internal module failure.
- ✔ Intermittent Problems: The issues may come and go, often worsening as the engine warms up. This is a classic sign of electronic components failing under heat stress.
A Reliable, Programmed Solution
Replacing your vehicle’s PCM can seem daunting, but our process makes it simple. By providing us with your VIN during checkout, you ensure that the module you receive is a direct-fit, correctly calibrated component for your exact vehicle. This eliminates the need for expensive trips to the dealership for programming. Once installed, you may need to perform a simple security relearn procedure (often called a Passlock or anti-theft relearn), which can typically be done in your driveway with just the ignition key. This replacement 2004-2006 Colorado PCM is your path to a smooth-running, dependable vehicle.
Broad Compatibility Across the GM Lineup
This module is a direct replacement for a wide range of GM vehicles and part numbers. Please verify that your original part number is on this list or that your vehicle is listed below:
Compatible Part Numbers: 12569773, 12588650, 12589311, 12589585, 12591647, 12591648, 12593531, 12593532, 12594430, 12594431, 12596783, 12596784, 12597521, 12597776, 12597777, 12600818, 12604438, 12604439, 12606369, 12606373, 12606374, 12606398, 12606399, 19209820, 19209821
Vehicle Fitment:
- 2004-2006 Chevrolet Colorado (RH firewall)
- 2004-2006 GMC Canyon (RH firewall)
- 2006 Hummer H3 (RH firewall)
- 2006 Buick Rainier (4.2L, LH engine)
- 2006 Chevrolet Trailblazer & Trailblazer EXT (4.2L, LH engine)
- 2006 GMC Envoy & Envoy XL (4.2L, LH engine)
- 2006 Isuzu Ascender (4.2L, LH engine)
- 2006 Isuzu i-280 (RH firewall)
- 2006 Isuzu i-350 (RH firewall)
- 2006 Saab 9-7x (6 cylinder, LH engine)
Frequently Asked Questions
Do I need to do any programming myself?
No. We program the module to the VIN you provide before shipping. The only additional step you may need to perform after installation is a security relearn procedure, which syncs the module with your vehicle’s anti-theft system. This procedure can usually be done without any special tools.
Where do I provide my VIN?
You can provide your vehicle’s 17-digit VIN in the notes section during checkout or by responding to your order confirmation email. We cannot ship your part until we receive the VIN, as programming is a required step.
Is this a plug-and-play part?
Yes, because we program it to your VIN, it is designed to be a direct replacement. After physically installing the module and reconnecting the battery, you will likely need to complete the security relearn procedure for the vehicle to start and run correctly.
Will this fix my specific problem?
This PCM will correct issues caused by a faulty control module. While the symptoms listed are common indicators of PCM failure, it’s essential to have your vehicle properly diagnosed. Problems with wiring, sensors, or grounds can sometimes mimic PCM failure. We recommend confirming the diagnosis before ordering.
What is the warranty on this part?
This part comes with our standard warranty against defects. Please see our warranty page for complete details and duration. Proper diagnosis and installation are key to the longevity of any electronic component.