Restore Peak Performance to Your HUMMER H3
Is your 2006 HUMMER H3 feeling less than adventurous? Stalling at intersections, shifting erratically, or displaying a stubborn check engine light can sideline even the toughest vehicle. The Powertrain Control Module (PCM) is the central command center for your engine and transmission. When it falters, the entire system can become unreliable. This isn’t just an inconvenience; it’s a loss of the confidence and capability you expect from your H3. We offer the definitive solution: a replacement PCM, precisely programmed to your vehicle’s specific VIN with the latest GM software updates. Get back the smooth power, crisp shifting, and worry-free operation you deserve.
Warning Signs and How to Overcome Them
A failing PCM can manifest in numerous frustrating ways. If you’re experiencing any of the following, this module is the reliable fix you need:
- ✔ Persistent Check Engine Light (CEL) that won’t clear
- ✔ Diagnostic Trouble Codes (DTCs) such as P0601, P0606, or other communication errors
- ✔ Rough or unpredictable idling
- ✔ A sudden, unexplained drop in fuel economy
- ✔ Harsh or delayed transmission shifting
- ✔ Engine stalling, hesitation, or a complete no-start condition
- ✔ Failure to pass state emissions testing
Guided Installation to Restore Peace of Mind
We’ve made this repair as straightforward as possible. By programming the module to your VIN before shipping, we eliminate the need for expensive dealer tools or complicated procedures. You can confidently perform this installation with basic hand tools.
- Safety First: Disconnect the negative terminal from your vehicle’s battery to prevent any electrical shorts.
- Locate the Module: On your HUMMER H3, the PCM is typically located on the right-hand (passenger side) firewall in the engine bay.
- Disconnect and Remove: Carefully unclip and disconnect the electrical wiring harnesses. Then, unbolt the old module from its mounting bracket and remove it.
- Install the New Unit: Mount your new, pre-programmed PCM in the same location. Securely reconnect the wiring harnesses, ensuring they click firmly into place.
- Final Steps: Reconnect the negative battery terminal. In most cases, the vehicle is ready to go. Some vehicles may require a simple security relearn procedure, which involves cycling the key in the ignition. We include clear instructions for this if it’s needed for your vehicle.
Mechanic’s Insight: Check the Basics First
Before assuming your PCM is faulty, take a moment to inspect your battery terminals and primary ground connections. A weak battery or a corroded ground wire can mimic PCM failure by causing low voltage and communication errors. Ensuring your electrical foundation is solid can save you from a misdiagnosis. A clean, tight connection is critical for your vehicle’s health.
Tailored Fit for Your Ride: 2006 HUMMER H3 Powertrain Control Module
This module is a direct-fit replacement, guaranteed to be compatible with the following vehicles and part numbers. We program it specifically for your VIN, ensuring perfect communication with your vehicle’s systems.
- 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)
Replaces 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
What exactly does this Powertrain Control Module do?
The PCM acts as the main computer for your vehicle’s engine and transmission. It processes data from dozens of sensors to control fuel injection, ignition timing, transmission shift points, and emissions systems to ensure optimal performance and efficiency.
How do I provide my VIN for programming?
After you complete your purchase, you can either add your 17-digit Vehicle Identification Number (VIN) to the notes section at checkout or send it to us in a message. We cannot ship your part until we have your VIN to ensure correct programming.
Is this part difficult to install for a DIYer?
Not at all. Because we program the module for you, it’s a true plug-and-play solution. The physical replacement typically requires only basic hand tools and can be completed in under an hour. It’s one of the most straightforward electronic repairs you can do.
Will I need to have a dealer perform any additional procedures?
No. Our VIN-specific programming eliminates the need for any expensive dealer tools or subsequent flashing. In some rare cases, a simple ‘key-on, key-off’ security relearn may be needed, and we provide easy-to-follow instructions for that.
Will this fix my specific check engine light code?
This module is the direct solution for internal processor failure codes (like P0601 or P0606) and a wide range of other performance-related faults. If your mechanic has diagnosed a faulty PCM, this part will resolve the issue and allow you to clear the related codes for good.