End the Guesswork and Get Your Truck Running Right
Is your GMC Canyon or Chevy Colorado suddenly running rough, shifting erratically, or refusing to start? A persistent Check Engine Light can be more than just an annoyance; it’s a sign that your truck’s brain—the Powertrain Control Module (PCM)—may be failing. When the PCM falters, it can cause a cascade of frustrating issues, leaving you stranded and stressed. This isn’t just a part; it’s the solution to restoring your vehicle’s reliability and your peace of mind. We provide a professionally programmed PCM, flashed with the latest GM software updates specifically for your vehicle’s VIN. This ensures a seamless integration, getting you back on the road with the performance and confidence you depend on.
Warning Signs and How to Overcome Them
A failing PCM can manifest in various ways. If you’re experiencing any of the following, this module is the definitive solution:
- ✔ Persistent Check Engine Light: Especially with communication codes (U-codes) or internal processor failure codes like P0601, P0604, or P0606.
- ✔ Erratic Engine Performance: Unexplained stalling, rough idling, misfires, or a sudden drop in fuel economy can all point to a faulty computer.
- ✔ Harsh or Incorrect Shifting: The PCM controls transmission logic, and a failure can lead to jerky shifts, or getting stuck in gear.
- ✔ No-Start Condition: If the engine cranks but won’t start, the PCM may not be properly firing the ignition coils or fuel injectors.
- ✔ Communication Loss: Your scanner may be unable to communicate with the module, indicating a critical internal failure.
Guided Installation to Restore Peace of Mind
Replacing your PCM doesn’t have to be an intimidating job. With our pre-programmed module, you’re already halfway there. Follow these simple steps for a confident installation:
- Safety First: Always disconnect the negative terminal from your vehicle’s battery and wait at least 15 minutes to allow the system to fully discharge.
- Locate the Module: On most 2004-2006 Canyon and Colorado models, the PCM is located on the right-hand (passenger) side of the firewall in the engine bay.
- Disconnect the Old Unit: Carefully unplug the electrical connectors. They have locking tabs that need to be released. Avoid forcing them. Once disconnected, unbolt the old module from its bracket.
- Install the New PCM: Mount your new, pre-programmed PCM onto the bracket and securely reconnect the wiring harnesses. You should hear a click as they lock into place.
- Reconnect Power: Reattach the negative battery terminal and tighten it securely.
- Perform Security Relearn: In many cases, you will need to perform a simple security relearn procedure to sync the new PCM with your vehicle’s anti-theft system. This typically involves turning the key to the ‘ON’ position for 10-15 minutes, then off, and repeating two more times before starting the engine.
A Technician’s Insight
Before you replace your PCM, take a moment to check your fundamentals. I’ve seen countless cases where PCM-like symptoms were actually caused by a weak battery, corroded battery terminals, or a bad ground connection. A simple voltage drop test on the main power and ground circuits to the PCM can save you a lot of time and money. Ensure your electrical system is healthy before installing your new module for a lasting, trouble-free repair.
Tailored Fit for Your 2004-2006 Canyon PCM and More
This module is a direct replacement for part number 12569773 and is guaranteed to fit the following vehicles. We program it specifically to your VIN, ensuring perfect compatibility.
- 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)
- Chevrolet Trailblazer / EXT: 2006 (Electronic Control Module; LH engine, 4.2L)
- GMC Envoy / XL: 2006 (Electronic Control Module; 4.2L, LH engine)
- Isuzu Ascender: 2006 (Electronic Control Module; 4.2L, LH engine)
- Isuzu I-280: 2006 (Electronic Control Module; RH firewall)
- Isuzu I-350: 2006 (Electronic Control Module; RH firewall)
- Saab 9-7X: 2006 (Electronic Control Module; 6 cylinder, ID 12569773 or 12597521)
This unit replaces a wide range of part numbers, including: 12588650, 12589311, 12591647, 12594430, 12596783, 12597521, 12600818, 12604438, 19209820, and more.
Frequently Asked Questions
What exactly does the PCM do?
The Powertrain Control Module (PCM) is the central computer that controls all aspects of your vehicle’s engine and transmission. It manages fuel injection, ignition timing, emissions systems, and shift points to ensure optimal performance, fuel efficiency, and reliability.
Is this part truly plug-and-play?
Because we program the module to your specific VIN before shipping, it is as close to plug-and-play as possible. However, you will likely need to perform a simple, key-on/key-off security relearn procedure after installation. This procedure syncs the module to your vehicle’s anti-theft system and does not require any special tools.
How do I provide my vehicle’s VIN?
After you complete your purchase, you will receive instructions on how to send us your 17-digit Vehicle Identification Number (VIN). We cannot program and ship your module without it, so please provide it promptly to avoid delays.
Will this fix my transmission shifting problems?
In many cases, yes. The PCM is responsible for controlling the transmission solenoids and interpreting sensor data to command shifts. If your shifting issues are electronic in nature and caused by a faulty PCM, this part is the correct solution. It will not fix internal mechanical failures within the transmission itself.
Do I need to have my old module sent in?
No core charge or return is required for this part. You can purchase this module outright without the hassle of sending your old one back.