Restore Peak Performance to Your GMC Canyon
Is your 2004, 2005, or 2006 GMC Canyon or Chevy Colorado experiencing frustrating issues like stalling, erratic shifting, a no-start condition, or a persistent Check Engine Light? The Powertrain Control Module (PCM), the central computer of your truck, is often the culprit. This vital component manages everything from fuel injection and ignition timing to transmission shifting and emissions control. When it fails, it can cause a wide range of debilitating symptoms that make your vehicle unreliable. This replacement PCM, part number 12589311, is the definitive solution to restore your truck’s original performance and dependability.
Is Your Truck Showing These Symptoms? Common Signs of PCM Failure
A failing PCM can manifest in various ways, often mimicking other component failures. If you’re experiencing any of the following, it’s time to inspect your engine’s computer:
- ✔ Check Engine Light: The light is on, and you may have codes related to module communication, sensor circuits, or processor faults.
- ✔ Engine Stalling or Misfiring: The engine may stall unexpectedly, run rough, or misfire, especially under load.
- ✔ No-Start Condition: The engine cranks but refuses to start, even with a good battery and starter.
- ✔ Poor Fuel Economy: A sudden and unexplained drop in MPG can be a sign the PCM is not managing the fuel system correctly.
- ✔ Harsh or Incorrect Shifting: Your automatic transmission may shift erratically, slam into gear, or get stuck in one gear.
- ✔ Communication Issues: Your diagnostic scan tool is unable to communicate with the PCM.
From the Diagnostic Bay
We had a 2005 Colorado come into the shop with a classic no-start complaint. The owner had already replaced the battery, alternator, and even the fuel pump, but the truck would only crank. Our initial scan showed no communication with the PCM. Before condemning the module, we checked the basics. A quick check with a multimeter revealed a corroded ground wire near the firewall, a common issue on these trucks. After cleaning the ground connection, the truck fired right up. It’s a powerful reminder: always verify power and grounds to the module before replacing it. A 10-minute check can save you hundreds of dollars and a lot of frustration.
The Direct-Fit Solution: A Programmed 2004-2006 Canyon PCM
Don’t settle for a generic, off-the-shelf computer that requires expensive dealership programming. We simplify the process. This PCM is meticulously tested and programmed specifically for your vehicle using the VIN you provide. This ensures that all factory settings, engine parameters, and security information are a perfect match for your truck’s configuration. We install the latest GM-certified software updates, which can resolve common drivability issues and improve overall performance and efficiency. This is not just a replacement part; it’s a fully prepared, plug-and-play solution designed to get you back on the road quickly and confidently.
Why VIN Programming is Essential
The Vehicle Identification Number (VIN) is more than just a serial number; it’s the DNA of your truck. It contains critical information about the engine size, transmission type, emissions equipment, and other factory-installed options. Programming the PCM with your VIN ensures that the module operates precisely as the manufacturer intended. Without correct VIN programming, you can experience a host of problems, including:
- Failure of the engine to start due to security system mismatch (Passlock).
- Incorrect transmission shift points and performance.
- Inaccurate speedometer readings.
- Compatibility issues with other onboard modules.
Our process eliminates these risks. Simply provide your VIN during checkout, and we handle the complex programming for you. When your module arrives, it’s ready for installation and a simple security relearn procedure that you can perform yourself, saving you a trip to the dealer.
Broad Compatibility Across GM Platforms
This versatile module, identified by part number 12589311 and its many interchanges, was used across a wide range of GM trucks and SUVs. This part is a direct replacement for the following vehicles:
- 2004-2006 Chevrolet Colorado (RH firewall)
- 2004-2006 GMC Canyon (RH firewall)
- 2006 Hummer H3 (RH firewall)
- 2006 Isuzu i-280 & i-350 (RH firewall)
- 2006 Buick Rainier 4.2L (LH engine)
- 2006 GMC Envoy, Envoy XL 4.2L (LH engine)
- 2006 Chevrolet Trailblazer, Trailblazer EXT 4.2L (LH engine)
- 2006 Isuzu Ascender 4.2L (LH engine)
- 2006 Saab 9-7x 4.2L (LH engine)
This is a reliable replacement for your original 2004-2006 Canyon PCM, ensuring seamless integration with your vehicle’s systems.
Frequently Asked Questions
How do I provide my VIN for programming?
After you complete your purchase, you will receive an email with instructions. You can simply reply to that email with your 17-digit VIN, or you can add it to the ‘notes’ section during checkout.
Is this a plug-and-play part?
Almost. Because we program the module to your VIN, it is ready to be installed. However, you will need to perform a simple security relearn procedure after installation. This procedure, often called the Passlock Relearn, takes about 30 minutes and does not require any special tools. We include instructions to guide you through it.
Will this fix my specific problem?
This PCM will correct issues directly caused by a faulty module. While the symptoms listed are common for PCM failure, they can also be caused by other issues like bad wiring, faulty sensors, or poor grounds. We always recommend a proper diagnosis by a qualified mechanic to confirm the PCM is the root cause of your problem.
Where is the PCM located on my 2005 GMC Canyon?
On the 2004-2006 GMC Canyon, Chevrolet Colorado, and Hummer H3, the PCM is typically located in the engine compartment on the right-hand (passenger side) firewall.
Do I need to return my old PCM?
This purchase does not require you to return your original part. There is no core charge associated with this item, saving you the hassle and expense of shipping your old module back.