Restore Peak Performance to Your Hummer H3
Is your 2007 Hummer H3 experiencing perplexing issues like rough idling, stalling, poor fuel economy, or a dreaded check engine light that won’t go away? These are classic signs of a failing Powertrain Control Module (PCM), the electronic brain of your vehicle. This vital component manages everything from fuel injection and ignition timing to transmission shifting and emissions control. When it falters, the entire performance and reliability of your truck are compromised. This replacement PCM, part number 12602010 (interchangeable with 19210067), is the definitive solution to restore your vehicle’s factory operation.
From the Diagnostic Bay
We had a 2007 GMC Canyon come into the shop with a persistent P0300 random misfire code. The owner had already replaced the spark plugs, ignition coils, and even the fuel injectors, but the problem remained. Scans showed erratic fuel trim data, but no single cylinder was the culprit. After hours of chasing wires and testing sensors, we finally focused on the PCM. We swapped in a known-good, programmed module, and the truck immediately smoothed out. The old PCM had an internal fault causing it to miscalculate fuel delivery under certain loads, a problem no amount of mechanical part replacement could fix. It’s a reminder that sometimes the issue lies with the computer itself.
Common Symptoms of a Failing PCM
- ✔ Check Engine Light is illuminated with various trouble codes (DTCs).
- ✔ Engine stalling, stumbling, or hesitating during acceleration.
- ✔ Noticeable decrease in fuel efficiency.
- ✔ Harsh or erratic automatic transmission shifting.
- ✔ Complete no-start condition where the engine cranks but won’t fire.
- ✔ Communication errors with diagnostic scan tools.
- ✔ Intermittent issues that are difficult to reproduce.
The Direct-Fit Solution: A Pre-Programmed 2007 Hummer H3 PCM
Replacing a PCM isn’t as simple as swapping a battery. The module must be programmed specifically to your vehicle’s unique Vehicle Identification Number (VIN). This process ensures it has the correct software and calibrations for your engine, transmission, and factory options. Our service eliminates the need for expensive dealership programming or specialized tools. We handle the critical programming for you. Simply provide us with your VIN during checkout, and we will flash this module with the latest, most stable software updates directly from GM. This ensures optimal performance, fuel efficiency, and emissions compliance right out of the box.
This module is a genuine OEM component, ensuring perfect compatibility and reliability. It is meticulously inspected to guarantee function and is ready for installation upon arrival. By installing this pre-programmed 2007 Hummer H3 PCM, you are not just replacing a part; you are restoring the central nervous system of your vehicle’s powertrain.
Wide-Ranging GM Compatibility
While this is a perfect fit for the 2007 Hummer H3, this versatile module (part numbers 12602010 / 19210067) is also the correct electronic control module for a wide range of other GM trucks and SUVs, including:
- 2007-2008 Isuzu Ascender (4.2L)
- 2007 Isuzu I-370 & I-290
- 2007-2008 GMC Envoy (4.2L)
- 2007 GMC Canyon
- 2007 Chevrolet Colorado
- 2007-2008 Chevrolet Trailblazer (4.2L)
- 2007-2008 Saab 9-7X (4.2L / 6-cylinder)
- 2007 Buick Rainier (4.2L)
Please verify the part number and application for your specific vehicle before ordering. Our VIN programming service ensures it will work seamlessly with any of the compatible models listed.
Frequently Asked Questions
Do I need to do any programming after I receive this PCM?
No. We program the module to your vehicle’s VIN before it ships. In most cases, it is a plug-and-play installation. However, you may need to perform a security relearn procedure or a Crankshaft Variation (CASE) relearn, which can often be done without special tools. Instructions are widely available online for these procedures.
How do I provide my VIN?
After you complete your purchase, you will need to send us your 17-digit VIN. You can typically add it as a note during checkout or send it to us in a message referencing your order number. We cannot ship the part until we receive your VIN.
Is this a new part?
This is a high-quality, tested OEM part that has been verified for full functionality. It is programmed with the newest software available from the manufacturer to ensure it performs reliably for years to come.
What is the difference between part numbers 12602010 and 19210067?
These are interchangeable GM part numbers for the same hardware. Depending on the vehicle application and production date, either number may be present on the original module. This replacement is compatible with both.
Will this fix my check engine light?
If the check engine light and associated symptoms are caused by a faulty PCM, then yes, this part will resolve the issue. It is crucial to have your vehicle properly diagnosed to confirm the PCM is the point of failure before ordering.