Restore Your Truck’s Brain and Get Back on the Road with Confidence
Is your Chevrolet Colorado or GMC Canyon suddenly acting possessed? Stalling at red lights, hesitating on acceleration, or throwing a stubborn Check Engine Light that just won’t quit? These are classic signs that the very heart of your truck’s electronics—the Powertrain Control Module (PCM)—is failing. Don’t let a faulty computer sideline your reliable workhorse. This direct-fit, VIN-programmed 2004-2006 Colorado PCM is the definitive solution to restore your vehicle’s performance, efficiency, and dependability, getting you back to worry-free driving.
From the Technician’s Bay: A Tale of Two Problems
I once had a 2005 Canyon in the shop that was a real head-scratcher. The owner was convinced his transmission was shot. It was shifting harshly, sometimes getting stuck in a gear. He’d already spent a fortune on fluid changes and diagnostics at another shop. After plugging in my scanner, I saw no transmission-specific codes, but there was a P0606 (PCM Processor Fault). The failing computer was sending garbled signals to the transmission, causing all the chaos. We swapped in a VIN-programmed PCM, and in under an hour, the truck was shifting like it just rolled off the factory floor. It’s a powerful reminder that the PCM is the true conductor of your vehicle’s orchestra.
Warning Signs Your PCM is Calling It Quits
A failing engine computer can manifest in numerous ways, often mimicking other mechanical problems. Here’s what to look out for:
- ✔ Illuminated Check Engine Light: Often the first and most obvious sign, with codes like P0601, P0602, P0606, or U-series communication codes.
- ✔ Erratic Engine Behavior: Unexplained stalling, rough idling, hesitation, or misfires can point directly to a confused computer.
- ✔ Poor Fuel Economy: If you’re suddenly stopping at the pump more often, the PCM may not be managing the fuel mixture correctly.
- ✔ Harsh or Failed Shifting: The PCM controls transmission shift points. Incorrect signals can lead to jerky shifts or failure to shift at all.
- ✔ Complete No-Start Condition: In severe cases, the PCM can fail to energize the fuel pump or ignition system, leaving you stranded.
- ✔ Failed Emissions Test: A malfunctioning PCM is a common reason for failing state emissions inspections.
Guided Installation to Restore Peace of Mind
We make this repair as simple as possible. By programming the module to your specific VIN before we ship it, we eliminate the need for an expensive trip to the dealership. Here are the basic steps:
- Safety First: Disconnect the negative terminal from your vehicle’s battery to prevent any electrical shorts.
- Locate the Old PCM: On most Colorado and Canyon models, you’ll find the PCM mounted to the firewall on the right-hand (passenger) side of the engine bay.
- Disconnect and Remove: Carefully unplug the electrical connectors. They have locking tabs that need to be released. Once disconnected, unbolt the module from its mounting bracket.
- Install the New Unit: Bolt your new, pre-programmed PCM into place and securely reconnect the electrical harnesses. You’ll hear a ‘click’ when they’re properly seated.
- Reconnect Power: Re-attach the negative battery terminal.
- Perform Security Relearn: Your vehicle’s anti-theft system may need to sync with the new PCM. This is a simple procedure you can do yourself (see our FAQ below for instructions).
Tailored Fit for Your Ride: The 2004-2006 Colorado PCM
This module is a guaranteed fit for a range of GM trucks and SUVs. Please verify your vehicle is on the list below. This unit replaces a wide array of part numbers, including 12569773, 12591647, 12606399, and 19209821.
- CHEVROLET COLORADO: 2004, 2005, 2006 (Electronic Control Module; RH firewall)
- GMC CANYON: 2004, 2005, 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 & TRAILBLAZER EXT: 2006 (Electronic Control Module; LH engine, 4.2L)
- GMC ENVOY & ENVOY XL: 2006 (Electronic Control Module; 4.2L, LH engine)
- ISUZU ASCENDER: 2006 (Electronic Control Module; 4.2L, LH engine)
- ISUZU I-280 & I-350: 2006 (Electronic Control Module; RH firewall)
- SAAB 9-7X: 2006 (Electronic Control Module; LH engine, 6 cylinder)
Ordering from us means you’re not just getting a part; you’re getting a complete, hassle-free solution. We handle the complex programming so you can focus on the simple installation. Restore your truck’s brainpower and get back to driving a vehicle you can trust.
Frequently Asked Questions
Do I need to get this programmed by a dealer?
Absolutely not! The main benefit of our service is that we program the module to your vehicle’s specific VIN before shipping it. This saves you the time, cost, and hassle of a trip to the dealership for programming.
What information do you need from me?
After you place your order, we simply need your 17-digit Vehicle Identification Number (VIN). You can usually find this on your driver’s side dashboard (visible through the windshield), on your door jamb sticker, or on your vehicle’s registration and insurance documents.
Is this a ‘plug-and-play’ installation?
It’s very close. After the physical installation, the only remaining step for most vehicles is a simple ‘Security Relearn Procedure’ which syncs the new PCM with your truck’s anti-theft system. You can easily do this yourself in your driveway.
How do I perform the Security Relearn Procedure?
It’s a simple 30-minute process. 1) Turn the key to the ‘ON’ position (don’t start the engine) for 10 minutes. The security light should turn off. 2) Turn the key ‘OFF’ for 10 seconds. 3) Repeat steps 1 and 2 two more times for a total of three 10-minute cycles. After the third cycle, the vehicle will be relearned and should start.
What if my original part number isn’t on your list?
The part numbers listed are the most common, but there are many interchangeable ones. If you don’t see your exact number, please contact us with your VIN. We can verify compatibility and ensure you receive the correct module for your truck.