Is Your 2004-2006 GMC Canyon Running Rough?
If you’re dealing with a frustrating check engine light, erratic engine behavior, poor fuel economy, or even a no-start condition in your GMC Canyon or Chevy Colorado, a failing Powertrain Control Module (PCM) is a very likely culprit. As the central computer for your truck’s engine and transmission, the PCM is responsible for managing everything from fuel injection and ignition timing to transmission shift points. When it begins to fail, it can cause a cascade of confusing and performance-robbing issues.
This replacement Powertrain Control Module, part number 12588650, is the definitive solution to restore your truck’s factory performance and reliability. We take the guesswork and high dealership costs out of the equation. Each module is meticulously tested and then programmed specifically to your vehicle’s Vehicle Identification Number (VIN). This ensures that it arrives at your door with the latest GM software updates, ready for a straightforward, plug-and-play installation.
From the Diagnostic Bay
We had a 2005 Chevy Colorado come into the shop that was driving the owner crazy. It would randomly stall at stoplights and had a persistent P0606 (PCM Processor Fault) code that would come and go. The owner had already replaced the throttle body and a couple of sensors with no luck. After confirming all power and ground circuits to the module were solid, we suspected the PCM itself. The internal processor was likely failing intermittently due to heat soak. Installing a VIN-programmed replacement like this one solved the issue immediately. The truck ran smoothly, the code never returned, and the customer was thrilled to have his reliable daily driver back without a costly trip to the dealer.
The Critical Role of Your 2004-2006 Canyon PCM
The Powertrain Control Module in your truck is more than just a simple component; it’s the brain of the entire operation. It constantly analyzes data from dozens of sensors throughout the engine and transmission—like the crankshaft position sensor, oxygen sensors, and throttle position sensor—to make instantaneous adjustments. This complex process ensures optimal power, efficiency, and emissions control. Over time, factors like heat cycles, engine vibration, and moisture can compromise the delicate internal circuits of the PCM, leading to failure.
Common Symptoms of a Failing PCM
- ✔ Persistent Check Engine Light (CEL) with codes related to the PCM (e.g., P0600-P0606) or sensor circuits.
- ✔ Engine stalling, stumbling, or misfiring for no apparent reason.
- ✔ Harsh or erratic automatic transmission shifting.
- ✔ A sudden, unexplained drop in fuel economy.
- ✔ The engine cranks but refuses to start (no-start condition).
- ✔ Communication errors with diagnostic scan tools.
- ✔ Failure of emissions tests.
Why Choose a VIN-Programmed Module?
A PCM is not a one-size-fits-all part. Your truck’s VIN contains specific information about its engine, transmission, emissions equipment, and other factory options. Our programming service ensures this replacement module is a perfect digital match for your vehicle. This eliminates the need for an expensive trip to a dealership or specialized shop for programming after installation. You simply provide us with your VIN during the checkout process, and we handle the rest. This is the most efficient way to get your 2004-2006 Canyon PCM replaced and get your truck back on the road.
Wide-Ranging GM Compatibility
While this is a primary solution for the GMC Canyon and Chevy Colorado, this module (service number 12588650) is also the correct fit for a variety of other GM vehicles from the same era. Please verify your part number and check the comprehensive fitment list below. This unit replaces a long list of original part numbers, including: 12569773, 12589311, 12591647, 12594430, 12596783, 12604438, and many more.
This module fits the following vehicles:
- GMC CANYON: 2004-2006 (Electronic Control Module; RH firewall)
- CHEVROLET COLORADO: 2004-2006 (Electronic Control Module; RH firewall)
- HUMMER H3: 2006 (Electronic Control Module; RH firewall)
- BUICK RAINIER: 2006 (Electronic Control Module; LH engine, 4.2L)
- GMC ENVOY / ENVOY XL: 2006 (Electronic Control Module; 4.2L, LH engine)
- CHEVROLET TRAILBLAZER / TRAILBLAZER EXT: 2006 (Electronic Control Module; LH engine, 4.2L)
- ISUZU ASCENDER: 2006 (Electronic Control Module; 4.2L, LH engine)
- ISUZU I-280 / I-350: 2006 (Electronic Control Module; RH firewall)
- SAAB 9-7X: 2006 (Electronic Control Module; LH engine, 6 cylinder)
Don’t let a faulty computer keep your truck sidelined. This plug-and-play replacement 2004-2006 Canyon PCM is your solution for restoring proper engine management and driveability. Order today and get your vehicle running like new again.
Frequently Asked Questions
Do I need to do any programming after I receive the module?
No. This module comes fully programmed to your vehicle’s specific VIN. In most cases, it is a direct plug-and-play installation. However, some vehicles may require a security relearn procedure (also known as a CASE relearn), which can typically be done without special tools. Instructions are readily available online for this simple procedure.
Where do I provide my VIN?
You can provide your 17-digit Vehicle Identification Number (VIN) in the notes section during checkout or by replying to your order confirmation email. We cannot program and ship your module without it, so please provide it promptly to avoid delays.
Is this a difficult part to install?
For someone with basic mechanical skills, this is a very manageable job. The module is typically located on the right-hand (passenger side) firewall in the engine bay. The key steps are to disconnect the vehicle’s battery, carefully unplug the electrical connectors, unbolt the old module, and install the new one in its place. Always reconnect the battery last.
Will this fix my check engine light?
If the check engine light and associated symptoms are caused by a faulty PCM, then yes, this part will resolve the issue. It’s crucial to have properly diagnosed the problem first. This module will not fix issues caused by other bad sensors, wiring problems, or mechanical failures.
What if I have a different part number on my original module?
This module replaces many different original GM part numbers. Please check the comprehensive list in the description (e.g., 12569773, 12591647, etc.). As long as your original part number is on our cross-reference list and your vehicle model/year matches, this module is the correct replacement for you.