Restore Peak Performance and Reliability to Your Hummer H3
Is your 2006 Hummer H3 running rough, stalling unexpectedly, or throwing confusing check engine lights? A failing Powertrain Control Module (PCM) can be the hidden culprit behind a host of frustrating engine and transmission issues, robbing you of the rugged dependability you expect. This isn’t just an inconvenience; it’s a matter of confidence on and off the road. Take back control with this direct-fit, professionally programmed PCM, engineered to restore your vehicle’s factory performance and get you back to your adventures with peace of mind.
We take the guesswork and high dealership costs out of the equation. Upon purchase, simply provide us with your vehicle’s VIN. Our experts will then flash this module with the latest, most stable GM software specific to your H3. It arrives at your door ready for a straightforward installation, eliminating the need for expensive scan tools or towing your vehicle to a service center. This is the definitive solution for a lasting repair.
Warning Signs Your PCM Needs Attention
- ✔ Check Engine Light: Persistent illumination, especially with codes like P0601, P0602, P0606, or U0100.
- ✔ Erratic Engine Behavior: Experiencing rough idling, stalling, hesitation during acceleration, or sudden power loss.
- ✔ Poor Fuel Economy: A noticeable and unexplained drop in your miles per gallon (MPG).
- ✔ No-Start Condition: The engine cranks but refuses to start, even with a good battery and fuel supply.
- ✔ Transmission Problems: Harsh or delayed shifting, or the transmission getting stuck in one gear.
- ✔ Failed Emissions Test: Inability to pass smog or emissions testing due to module-related faults.
An Expert’s Diagnostic Tip
“Before condemning the PCM, always perform a thorough check of your battery, alternator, and all primary ground connections. A weak battery or a corroded ground strap can cause voltage drops that mimic PCM failure, leading to a misdiagnosis. I’ve seen countless cases where simply cleaning the main ground from the engine block to the chassis solved a host of bizarre electronic gremlins. A solid foundation is key to a reliable repair.”
Guided Installation for Your 2006 HUMMER H3 PCM
- Safety First: Begin by disconnecting the negative terminal on your vehicle’s battery to prevent any electrical shorts.
- Locate the Module: On your 2006 H3, the PCM is typically located on the right-hand (passenger) side of the firewall in the engine bay.
- Disconnect and Remove: Carefully unplug the electrical connectors from the old PCM. They have locking tabs that need to be released. Once disconnected, unbolt the module from its mounting bracket.
- Install the New PCM: Mount your new, pre-programmed PCM securely onto the bracket. Reconnect the electrical harnesses, ensuring they click firmly into place.
- Reconnect Power: Reattach the negative battery terminal and tighten it securely.
- Perform Security Relearn: Your vehicle may require a simple security relearn procedure. Typically, this involves turning the key to the ‘ON’ position for 10-15 minutes, then off, and repeating 2-3 times until the security light goes out. This allows the new PCM to sync with your vehicle’s anti-theft system.
Tailored Fit for Your Ride
This module is a direct replacement for a wide range of part numbers and is guaranteed to be compatible with 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 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 does ‘VIN Programmed’ actually mean?
It means we load the module with your vehicle’s specific factory software using your unique 17-digit Vehicle Identification Number (VIN). This ensures all systems, including the engine, transmission, and anti-theft security, communicate correctly, making the installation a simple plug-and-play process.
Do I need to do anything after I install it?
In most cases, you will only need to perform a simple security relearn procedure, which takes about 30 minutes and requires only your car key. We include instructions for this process. Occasionally, a Crankshaft Position Sensor (CASE) relearn may be needed, which can be done by most local repair shops with a capable scan tool.
How do I provide my VIN?
After you complete your purchase, you can send us a message with your vehicle’s VIN. You can find the VIN on your driver’s side door jamb sticker, the corner of your dashboard (viewable through the windshield), or on your vehicle’s registration and insurance documents.
What if my original part number isn’t on your list?
The part numbers listed are the most common, but there are many superseded numbers. As long as your vehicle’s year, make, and model match our compatibility list, this module will be the correct fit. The VIN programming ensures it works perfectly for your specific application.
Is this a brand new part?
This is a professionally serviced, genuine OEM part. Each module undergoes rigorous testing and inspection to ensure it meets or exceeds original factory specifications for performance and longevity, offering you a reliable and cost-effective solution.