Is Your GMC Canyon Experiencing Unexplained Issues?
The Powertrain Control Module (PCM), often called the Electronic Control Module (ECM), is the central computer of your 2004-2006 GMC Canyon. It governs everything from fuel injection and ignition timing to transmission shift points and emissions controls. When this critical component begins to fail, it can cause a cascade of confusing and frustrating problems that can be difficult to diagnose. You might experience a sudden loss of power, erratic shifting, poor fuel economy, or even a vehicle that refuses to start. Don’t let a faulty computer keep your truck off the road. This direct-replacement PCM is the solution you need to restore your vehicle’s performance and reliability.
From the Diagnostic Bay
We had a 2005 Colorado come into the shop that was giving its owner fits. It had an intermittent no-start condition and would sometimes shift hard between first and second gear. Two other shops had replaced the battery, alternator, and even the transmission solenoids, but the problem persisted. After hooking up our diagnostic scanner, we noticed erratic data readings from the throttle position sensor and coolant temperature sensor, even though the sensors themselves tested fine. This pointed us directly to the PCM. The internal circuitry was failing, sending corrupt data throughout the system. We installed a VIN-programmed PCM, performed the security relearn, and the truck ran perfectly. It’s a classic case where chasing individual symptoms can be misleading; sometimes, you have to go straight to the brain of the operation.
Symptoms of a Failing Powertrain Control Module
- ✔ Check Engine Light is on with various, often unrelated, trouble codes.
- ✔ Your vehicle fails to start or starts intermittently.
- ✔ Noticeable decrease in fuel efficiency.
- ✔ Harsh or erratic automatic transmission shifting.
- ✔ Engine stalling, stuttering, or misfiring while driving.
- ✔ Communication errors with diagnostic scan tools.
- ✔ Apparent failure of multiple sensors at once.
The Right Solution: A Programmed 2004-2006 Canyon PCM
Replacing a PCM isn’t just about swapping a box. Modern vehicles require the module to be programmed specifically to the Vehicle Identification Number (VIN) to function correctly. Our service eliminates the guesswork and the need for expensive dealership programming. When you order from us, we flash the module with the latest, most stable software updates from GM, tailored precisely to your truck’s VIN. This ensures all factory-installed options and systems are recognized and operate as intended. This is a plug-and-play solution designed to get you back on the road quickly and affordably.
This module is a direct fit for a wide range of GM trucks and SUVs, acting as a reliable replacement for numerous part numbers. Simply provide us with your vehicle’s VIN after purchase, and our technicians will handle the programming. The module you receive will be ready for installation, requiring only a standard security relearn procedure that can often be done without special tools.
Complete Vehicle Fitment
This Powertrain Control Module is compatible with the following vehicles. Please verify your vehicle and options below.
- CANYON 2004-2006 (Electronic Control Module; RH firewall)
- COLORADO 2004-2006 (Electronic Control Module; RH firewall)
- HUMMER H3 2006 (Electronic Control Module; RH firewall)
- 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)
- RAINIER 2006 (Electronic Control Module; 4.2L, LH engine)
- TRAILBLAZER 2006 (Electronic Control Module; 4.2L, LH engine)
- TRAILBLAZER EXT 2006 (Electronic Control Module; 4.2L, LH engine)
- ENVOY 2006 (Electronic Control Module; 4.2L, LH engine)
- ENVOY XL 2006 (Electronic Control Module; 4.2L, LH engine)
- SAAB 9-7X 2006 (Electronic Control Module; 6 cylinder, ID 12569773 or 12597521, LH engine)
This unit replaces the following 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
How do I provide my VIN number?
After you complete your purchase, you can send us a message with your 17-digit VIN. We cannot ship the module until we receive this information, as the programming is essential for the part to function in your vehicle.
Is this a plug-and-play part?
Almost. The module comes fully programmed to your VIN. However, on most GM vehicles of this era, you will need to perform a security relearn procedure after installation. This syncs the new PCM with your vehicle’s anti-theft system and keys. This procedure typically takes about 30 minutes and can be done without any special tools. We can provide instructions for this simple process.
Will this fix my specific problem?
A failing PCM can cause a wide variety of symptoms. This part is a direct solution for a confirmed faulty module. While we cannot diagnose your vehicle remotely, the symptoms listed on this page are strong indicators of PCM failure. We always recommend confirming the diagnosis with a qualified mechanic or by ruling out other potential causes like wiring or sensor issues first.
What if my original part number is not 12596784?
No problem. This PCM is a hardware equivalent and replacement for all the part numbers listed in the description. As long as your original part number is on our list and your vehicle matches the fitment guide, this module will work perfectly once programmed to your VIN.
Do I need to send my old PCM back?
No core charge or return is required for this particular part. You can keep or responsibly dispose of your old module.