Is Your Truck Running Rough? Get Back on the Road with a Reliable Powertrain Control Module
Is your 2004, 2005, or 2006 Chevrolet Colorado or GMC Canyon suffering from frustrating and unpredictable issues? A faulty Powertrain Control Module (PCM), also known as an Electronic Control Module (ECM), is often the hidden culprit behind a wide range of performance problems. This critical component is the brain of your vehicle, managing everything from fuel injection and spark timing to transmission shifting and emissions control. When it starts to fail, it can cause a cascade of issues that can leave you stranded. This replacement PCM is the definitive solution to restore your truck’s original performance and reliability.
From the Diagnostic Bay
We recently had a 2005 GMC Canyon come into the shop with a complaint of intermittent stalling at stoplights and a harsh 1-2 shift. The check engine light was on with a P0601 ‘Internal Control Module Memory Check Sum Error’ code. The owner had already replaced the spark plugs and a few sensors with no improvement. After confirming the power and ground circuits to the module were solid, we knew the internal processor was failing. We installed one of our pre-programmed modules, performed the quick security relearn, and the truck ran perfectly. The harsh shifting vanished, the idle was stable, and the check engine light stayed off. It’s a classic case where chasing sensors is a waste of money, and the root cause is the computer itself.
Common Symptoms of a Failing PCM
If you’re experiencing any of the following issues, it’s a strong indication that your vehicle’s PCM needs attention. A failing module can mimic many other problems, but if you’re seeing several of these symptoms, the PCM is the most likely cause.
- ✔ Check Engine Light: The most common sign, often with communication error codes (U-codes) or internal processor fault codes (P0600-P0606).
- ✔ Engine Stalling or Misfiring: The engine may stall for no reason, run rough, or misfire as the PCM fails to correctly manage fuel and spark.
- ✔ Poor Fuel Economy: An inefficiently running engine, managed by a faulty PCM, will consume more fuel than usual.
- ✔ Harsh or Erratic Shifting: The PCM controls the transmission. Failure can lead to delayed, hard, or incorrect gear shifts.
- ✔ No-Start Condition: The vehicle may crank but refuse to start because the PCM isn’t activating the fuel pump or ignition coils.
- ✔ Reduced Engine Power: Your truck may feel sluggish and unresponsive, as if it’s in a ‘limp mode’.
- ✔ Intermittent Electrical Issues: Gauges acting erratically or other electronic components malfunctioning can sometimes be traced back to a failing PCM.
The Direct-Fit Solution: Your Pre-Programmed 2004-2006 Colorado PCM
Don’t let a faulty computer keep your truck off the road. This replacement 2004-2006 Colorado PCM is the most efficient and cost-effective way to solve your vehicle’s electronic issues. The biggest advantage is our complimentary programming service. Simply provide us with your vehicle’s 17-digit VIN (Vehicle Identification Number) during checkout, and our technicians will flash the module with the latest, most stable software updates directly from GM. This ensures the module is a perfect match for your truck’s specific configuration, including engine size, transmission type, and emissions equipment.
This unit is a direct replacement for part number 12569773 and a host of other interchangeable part numbers, ensuring wide compatibility across numerous GM trucks and SUVs. The process is simple: you order, provide your VIN, and we ship a module that is ready for installation right out of the box. This eliminates the need for an expensive trip to the dealership for programming, saving you hundreds of dollars and significant downtime.
Guaranteed Compatibility
This module is a direct fit for a wide range of GM vehicles. Please verify your part number or match your vehicle in the list below:
- Chevrolet Colorado: 2004-2006
- GMC Canyon: 2004-2006
- Hummer H3: 2006
- Chevrolet Trailblazer: 2006 (4.2L)
- GMC Envoy: 2006 (4.2L)
- Buick Rainier: 2006 (4.2L)
- Isuzu Ascender: 2006 (4.2L)
- Isuzu I-280 & I-350: 2006
- Saab 9-7x: 2006 (6 cylinder)
This part replaces the following OEM 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.
Frequently Asked Questions
Do I need to have this module programmed?
No. We handle all the programming for you before we ship the part. Just provide your vehicle’s VIN at checkout, and it will arrive ready to install.
What is a VIN and why is it required?
The VIN is your 17-digit Vehicle Identification Number, found on your dashboard or driver’s side door jamb. It contains specific information about your truck’s engine, transmission, and other options. We use it to load the exact correct GM software for your vehicle.
Is this part difficult to install?
Installation is straightforward for someone with basic mechanical skills. It involves disconnecting the battery, unplugging the electrical connectors, and unbolting the old module. On these GM vehicles, you may need to perform a simple security relearn procedure after installation, which typically takes about 30 minutes and does not require special tools.
Will this fix my check engine light?
If your check engine light is caused by an internal failure of the PCM (common codes include P0601, P0602, P0606), then this replacement module will solve the problem. If the light is on for another reason, such as a bad sensor, that issue will need to be addressed separately.
Where is the PCM located on my 2004-2006 Colorado?
On the Chevrolet Colorado, GMC Canyon, and Hummer H3, the PCM is typically located on the right-hand (passenger) side of the firewall in the engine compartment.