Is Your Truck Running Rough? Restore Its Brainpower.
The Powertrain Control Module, or PCM, is the central computer of your 2004-2006 Chevrolet Colorado or GMC Canyon. It’s the master controller, managing everything from fuel injection and spark timing to transmission shifting and emissions systems. When this critical component begins to fail, it can cause a cascade of confusing and frustrating problems, often mimicking the failure of other parts. If you’re dealing with persistent, hard-to-diagnose issues, a faulty PCM could be the culprit.
This replacement Powertrain Control Module is the definitive solution to get your truck back on the road and running like it should. We take the guesswork out of the repair by pre-programming the module specifically for your vehicle using your VIN. This ensures that all factory settings, engine parameters, and security information are a perfect match for your truck’s original configuration. It arrives flashed with the latest GM software updates, addressing potential bugs and improving performance and reliability over the original programming.
From the Diagnostic Bay
We once had a 2005 Canyon in the shop that was driving the owner crazy. It had a random misfire, would occasionally stall at red lights, and the transmission shifted harshly. He had already replaced two ignition coils, the spark plugs, and a throttle position sensor based on various forum posts and advice. The problems persisted. After hooking up our professional scan tool and monitoring live data, we noticed erratic voltage readings coming from the PCM’s 5-volt reference circuit. The module itself was failing internally, sending bad signals to the very sensors he had replaced. Installing a correctly programmed PCM solved all the issues instantly. It’s a classic case of treating the disease, not just the symptoms.
Common Symptoms of a Failing PCM
A failing engine computer can manifest in numerous ways. If your truck is experiencing any of the following, it’s time to consider the PCM as a potential cause:
- ✔ Unexplained Check Engine Light (CEL) that won’t clear or returns with various codes.
- ✔ Engine stalling, stumbling, or running rough for no apparent reason.
- ✔ Harsh or erratic automatic transmission shifting.
- ✔ A complete no-start condition where the engine cranks but won’t fire up.
- ✔ Noticeable decrease in fuel economy.
- ✔ Failure of emissions testing.
- ✔ Communication errors with diagnostic scan tools.
Why Choose Our Programmed 2004-2006 Colorado PCM?
Getting your truck fixed shouldn’t be a complicated ordeal. Our process is designed to be simple and effective. You’re not just buying a part; you’re buying a complete solution. By providing us with your vehicle’s VIN, you ensure that the module you receive is a 100% compatible, direct-fit replacement for your original unit. This eliminates the need for expensive trips to the dealership for programming, saving you both time and money. This module is a direct replacement for a wide range of part numbers, including 12569773, 12588650, 12593531, 12600818, and many more, ensuring broad compatibility.
Installation Note: This module is located on the right-hand (passenger side) firewall in the Colorado and Canyon. While the programming is done for you, you will need to perform a simple security relearn procedure after installation to sync the new PCM with your vehicle’s anti-theft system. This procedure can typically be done without special tools and instructions are widely available.
Extensive Vehicle Compatibility:
While this is a primary fit for the Chevy Colorado and GMC Canyon, this versatile module also fits the following vehicles:
- Buick Rainier: 2006 (4.2L)
- Hummer H3: 2006
- Isuzu Ascender: 2006 (4.2L)
- Isuzu i-280 & i-350: 2006
- Chevy Trailblazer & Trailblazer EXT: 2006 (4.2L)
- GMC Envoy & Envoy XL: 2006 (4.2L)
- Saab 9-7x: 2006 (6 cylinder)
Frequently Asked Questions
Do I need to have this programmed by a dealer?
No. We program the module to your vehicle’s specific VIN before we ship it. This saves you a costly trip to the dealership.
What do I need to do after I install it?
You will need to perform a security relearn procedure, also known as a Passlock or VATS relearn. This syncs the new PCM to your truck’s anti-theft system and keys. The procedure typically involves a series of key cycles and can be done in your driveway.
Where do I provide my VIN?
You can add your VIN in the notes section during checkout, or we will contact you via email after your purchase to request it. We cannot ship your order until we have your VIN.
Is this a guaranteed fix for my truck?
This part is a solution for a failed PCM. While it resolves the common symptoms listed, we always recommend a proper diagnosis by a qualified mechanic to confirm the PCM is the root cause of your issues before ordering.
What if my original part number isn’t 12593531?
This module replaces a long list of interchangeable part numbers. Please check the list in the description to see if your original part number is included. If you’re unsure, contact us with your VIN and original part number, and we’ll verify compatibility for you.