Is your 2006 HUMMER H3 suffering from erratic behavior, poor fuel economy, or a persistent Check Engine Light? These are classic signs of a failing Powertrain Control Module (PCM), the electronic brain of your vehicle’s engine and transmission. A faulty PCM can turn your rugged H3 into an unreliable headache, causing issues ranging from rough idling and stalling to a complete no-start condition. Don’t let a bad computer sideline your adventure. This replacement PCM is the definitive solution to restore your vehicle’s performance, reliability, and drivability.
This isn’t just a replacement part; it’s a fully prepared, direct-fit solution. We take the guesswork and hassle out of the repair process. Upon purchase, simply provide us with your vehicle’s VIN. Our technicians will then flash the module with the latest, most stable GM-certified software specific to your H3. This ensures that all factory parameters for fuel delivery, ignition timing, transmission shifting, and emissions controls are perfectly matched to your vehicle’s original specifications. This critical programming step eliminates the need for an expensive trip to the dealership for coding, saving you significant time and money.
Common Symptoms of a Failing 2006 HUMMER H3 PCM
If you’re experiencing any of the following issues, a failing powertrain module is a likely culprit. A failing computer can manifest in numerous ways, often mimicking other sensor or component failures. Here are the most common indicators to watch for:
- ✔ Persistent Check Engine Light (CEL) with various trouble codes.
- ✔ Engine stalling or shutting off unexpectedly while driving.
- ✔ Rough or erratic idling.
- ✔ Difficulty starting the engine or a no-start condition.
- ✔ Noticeable decrease in fuel efficiency.
- ✔ Harsh or incorrect automatic transmission shifting.
- ✔ Failure to pass an emissions test.
- ✔ Communication errors with diagnostic scan tools.
The Plug-and-Play Advantage
Our process is designed for simplicity and effectiveness. By programming the module to your specific VIN, we ensure that it’s ready for installation right out of the box. Once installed, your vehicle will recognize the new PCM as its own. While the module is programmed for a seamless integration, please be aware that some GM vehicles of this era may require a simple, key-on ‘Security Relearn’ procedure to sync the new module with your vehicle’s anti-theft system. This procedure typically takes 10-30 minutes and can be performed by the owner without any special tools. Instructions are readily available online or in your vehicle’s service manual.
Guaranteed Fitment and Compatibility
This Powertrain Control Module is a direct replacement for a wide range of GM trucks and SUVs built on this platform. It is compatible with numerous original equipment part numbers, ensuring a perfect match for your vehicle. This module will fit the following vehicles:
- HUMMER H3: 2006
- Chevrolet Colorado: 2004-2006
- GMC Canyon: 2004-2006
- Buick Rainier: 2006 (4.2L)
- Chevrolet Trailblazer & Trailblazer EXT: 2006 (4.2L)
- GMC Envoy & Envoy XL: 2006 (4.2L)
- Isuzu Ascender: 2006 (4.2L)
- Isuzu i-280: 2006
- Isuzu i-350: 2006
- Saab 9-7x: 2006 (6 cylinder)
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
Do I need to have this PCM programmed by a dealer?
No. We handle all the programming for you before we ship the part. Simply provide your vehicle’s VIN during checkout, and the module will arrive ready to be installed, flashed with the latest GM software for your specific vehicle.
Where is the PCM located on my 2006 HUMMER H3?
On the 2006 HUMMER H3, as well as the Chevy Colorado and GMC Canyon, the PCM is typically located on the right-hand (passenger) side of the firewall in the engine bay.
What is a security relearn procedure?
A security relearn, or anti-theft relearn, is a simple procedure that syncs the new PCM to your vehicle’s existing keys and security system. It usually involves turning the key to the ‘ON’ position for 10 minutes, then ‘OFF’, and repeating this sequence three times. No special tools are required.
Will this fix my transmission shifting problems?
The PCM controls both the engine and the transmission. If your shifting issues are caused by faulty electronic commands from the module, then yes, replacing the PCM will resolve them. However, it will not fix internal mechanical issues within the transmission itself.
What happens if I install it without providing a VIN?
The module will not function correctly. The VIN-specific programming is essential for the engine, transmission, and all related systems to operate as intended. We cannot ship the product until we receive your VIN to ensure proper functionality and a successful repair.