Is Your 2004-2006 Canyon Plagued by Mysterious Electrical Gremlins?
As a technician with over two decades of experience under the hood, I’ve seen my fair share of confusing issues on the GMT355 platform, which includes your GMC Canyon and its sibling, the Chevy Colorado. A truck will roll into the bay with a laundry list of complaints: it won’t start one day but fires right up the next, the check engine light is on with codes that don’t make sense, or the transmission shifts erratically. After hours of chasing wires and testing sensors, the root cause often points to one component: a failing Powertrain Control Module (PCM).
The PCM is the brain of your truck’s engine and transmission. It processes information from dozens of sensors to manage everything from fuel injection and ignition timing to transmission shift points and emissions controls. When it starts to fail, the symptoms can be widespread and seem unrelated, making diagnosis a real headache for the average DIYer and even some professional shops.
Common Symptoms of a Failing PCM on Your Canyon:
- โ Check Engine Light (CEL) is illuminated, often with communication-related fault codes (U-codes).
- โ Intermittent no-start or hard-starting conditions.
- โ Rough idling, stalling, or poor engine performance.
- โ Noticeably decreased fuel economy.
- โ Harsh or incorrect transmission shifting.
- โ The engine seems to lose power randomly while driving.
Expert Pro Tip from a 20-Year Veteran
Before you condemn your PCM, do a voltage drop test on your main power and ground circuits. On these Canyons and Colorados, a corroded ground strap from the engine to the frame or a failing battery can cause low voltage issues that mimic PCM failure. I’ve seen it happen dozens of times. A clean, tight, and healthy electrical system is crucial for any computer module to function correctly. This simple check can save you from replacing a part that isn’t actually bad.
The Right Solution: A Reliable, Programmed PCM Ready for Installation
Forget the hassle and high cost of a dealership visit. This isn’t just a replacement part; it’s a complete solution. We take a genuine OEM electronic control module and flash it with the very latest, most stable software calibration from GM, specifically matched to your truckโs Vehicle Identification Number (VIN). This critical step ensures all systems communicate perfectly, just as the engineers intended.
When you order from us, you’re bypassing the most difficult part of the repair. Normally, you’d have to install a blank module, have your truck towed to a dealer or specialized shop, and pay them hundreds of dollars just to program it. Our process eliminates that entirely.
What You Get With Your Order:
- โ A genuine Powertrain Control Module that meets or exceeds original specifications.
- โ Professional VIN-programming with the newest GM software updates for improved performance and reliability.
- โ A plug-and-play solution designed for straightforward installation.
- โ A part that restores communication between your engine, transmission, and other vehicle systems.
Guaranteed Fitment for Your Vehicle
This module is a direct-fit replacement for your 2004-2006 GMC Canyon. It is located on the right-hand (passenger side) of the firewall. Additionally, its versatile architecture means it’s also the correct part for a wide range of other GM vehicles, making it a well-tested and reliable component across the platform.
Also Fits These GM, Isuzu, and Saab Models:
- โ 2004-2006 Chevrolet Colorado: Electronic Control Module; (RH firewall)
- โ 2006 Hummer H3: Electronic Control Module; (RH firewall)
- โ 2006 Buick Rainier: Electronic Control Module; (LH engine), 4.2L
- โ 2006 Chevrolet Trailblazer & Trailblazer EXT: Electronic Control Module; (LH engine), 4.2L
- โ 2006 GMC Envoy & Envoy XL: Electronic Control Module; 4.2L (LH engine)
- โ 2006 Isuzu Ascender: Electronic Control Module; 4.2L (LH engine)
- โ 2006 Isuzu i-280 & i-350: Electronic Control Module; (RH firewall)
- โ 2006 Saab 9-7X: Electronic Control Module; (LH engine), 6 cylinder
Replaces a Wide Range of Part Numbers:
To ensure compatibility, this module directly replaces the following GM and associated 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, and 19209821.
After your purchase, simply provide us with your VIN. We’ll handle the programming, so the module that arrives at your door is ready to be installed, allowing you to get your truck back on the road quickly and confidently.