Restore Peak Performance to Your GM Truck
Is your GMC Canyon, Chevy Colorado, or Hummer H3 acting up? Unexplained stalling, a persistent Check Engine Light, or erratic engine behavior can often be traced back to a failing Powertrain Control Module (PCM). As the central computer for your engine and transmission, a faulty PCM can cause a cascade of frustrating and hard-to-diagnose problems. This isn’t just an inconvenience; it’s a reliability issue that can leave you stranded. In my 20+ years of experience, I’ve seen countless owners replace sensors and fuel pumps, only to find the root cause was the PCM all along.
This replacement Powertrain Control Module is the definitive solution. We take the guesswork and high costs out of the repair by programming the module to your vehicle’s specific Vehicle Identification Number (VIN) before it ships. This means it arrives at your door with the latest GM software updates already installed, ready for a straightforward installation. You get a reliable fix that restores factory performance without the need for an expensive trip to the dealership for programming.
Case Study: A Tricky Diagnosis
A customer brought in a 2005 Canyon with an intermittent no-start condition. The battery was good, the starter was fine, but sometimes it would just crank endlessly. There were no consistent trouble codes, making it a diagnostic nightmare. After checking fuel pressure and spark, which were intermittently weak, we focused on the PCM. By monitoring the 5-volt reference signal from the module, we saw it dropping out randomly. We swapped in a VIN-programmed PCM, and the truck fired up instantly and ran perfectly. It’s a classic example of how a failing 2004-2006 Canyon Powertrain Control Module can create symptoms that point elsewhere, costing time and money on unnecessary parts.
Is Your Truck Showing These Symptoms?
- ✔ Persistent Check Engine Light (CEL)
- ✔ Diagnostic Trouble Codes (DTCs) related to internal module failure, such as P0601, P0602, or P0606
- ✔ Engine stalling or shutting off while driving
- ✔ Harsh or incorrect shifting
- ✔ Poor fuel economy
- ✔ Engine cranks but will not start
- ✔ Communication errors with scan tools
A Straightforward Guide to Installation
- ✔ Safety First: Disconnect the negative terminal from your vehicle’s battery and secure it away from the post.
- ✔ Locate the PCM: On most compatible trucks like the Canyon and Colorado, the PCM is located on the right-hand (passenger side) firewall in the engine bay. On Trailblazer/Envoy models, it’s typically on the left-hand (driver side) of the engine.
- ✔ Disconnect the Module: Carefully release the locking tabs and unplug the electrical connectors from the old PCM. Take a photo beforehand if you’re worried about mixing them up.
- ✔ Remove the Old Unit: Unbolt the old PCM from its mounting bracket.
- ✔ Install the New PCM: Mount your new, pre-programmed PCM onto the bracket and securely plug in the electrical connectors. Ensure they click into place.
- ✔ Reconnect Power: Re-attach the negative battery terminal.
- ✔ Final Steps: In some cases, a security relearn procedure may be required. This can often be done without special tools by cycling the key in the ignition. Consult your vehicle’s service information for specific steps if needed.
Verified Vehicle Compatibility
This module is a direct replacement for a wide range of GM vehicles and part numbers, ensuring a perfect fit and function. It is compatible with the following original equipment 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.
This part will fit the following makes and models with the specified options:
- Buick Rainier: 2006 (4.2L)
- Chevrolet Colorado: 2004-2006
- Chevrolet Trailblazer & Trailblazer EXT: 2006 (4.2L)
- GMC Canyon: 2004-2006
- GMC Envoy, Envoy XL: 2006 (4.2L)
- Hummer H3: 2006
- Isuzu Ascender: 2006 (4.2L)
- Isuzu i-280: 2006
- Isuzu i-350: 2006
- Saab 9-7x: 2006 (6 Cylinder)
Ordering a 2004-2006 Canyon Powertrain Control Module from us is the most efficient way to get your truck back to its reliable, smooth-running self.
Do I need to do any programming myself?
Do I need to do any programming myself?
No. We handle all the programming for you. Simply provide your vehicle’s VIN during or after checkout, and we will flash the module with the correct, updated GM software for your specific vehicle before we ship it.
How do I provide my VIN?
You can enter your VIN in the notes section during checkout or send it to us in a message after you complete your purchase. We cannot ship the module until we receive your VIN, as the programming is essential.
Is this a plug-and-play part?
Yes, for over 95% of vehicles, this is a direct plug-and-play installation. In rare cases, your vehicle may require a security relearn procedure, which can typically be done at home without any special scan tools.
Will this fix my specific problem?
This module corrects issues directly caused by a faulty PCM, including common DTCs like P0601, poor engine performance, and no-start conditions. While it is a common failure point, we always recommend a proper diagnosis by a qualified technician to confirm the PCM is the source of your issue.
What if my original part number isn’t listed?
The part numbers listed are the most common interchanges. If you are unsure about compatibility, please contact us with your VIN and the part number from your original module, and our experts will verify the fitment for you.