Is Your HUMMER H2 Running Rough, Stalling, or Refusing to Start?
If you’re dealing with a frustrating check engine light, erratic engine behavior, or a no-start condition on your 2003-2007 HUMMER H2, a failing Powertrain Control Module (PCM) is often the culprit. As the central computer for your engine and transmission, when the PCM starts to fail, it can cause a cascade of confusing and intermittent problems that are difficult to diagnose. Don’t let a faulty module keep your H2 sidelined.
This is a direct-fit replacement PCM, programmed specifically for your vehicle using your VIN. We install the latest GM-certified software updates before it ships, ensuring optimal performance and resolving common factory bugs. This isn’t just a part; it’s a complete, ready-to-install solution.
Real-World Diagnostics: A Story from the Shop
“A customer’s 2005 HUMMER H2 came in last week with these exact symptoms. It would run fine for days, then suddenly stall at a stoplight and refuse to restart for an hour. The dashboard was lit up with a check engine light and a ‘Service 4WD’ message. Our scan tool pulled a U0100 code, indicating a loss of communication with the PCM. After confirming the wiring and grounds were solid, we knew the internal circuitry of the original PCM was failing due to years of heat and vibration. Installing a VIN-programmed module like this one had the truck running perfectly in under 30 minutes. It’s a repair I’ve done hundreds of times on these GM trucks and SUVs.”
Why Choose Our Pre-Programmed 2003-2007 HUMMER H2 PCM?
Getting your vehicle back on the road shouldn’t be complicated. We handle the complex programming so you can handle the simple installation.
- โ VIN-Matched Software: We flash the module with your vehicle’s exact VIN, ensuring it communicates perfectly with the other systems in your H2, including the security and anti-theft systems.
- โ Latest GM Updates: Your new PCM will have the most current software available from General Motors, which often corrects drivability issues like poor shifting or inefficient fuel economy.
- โ No Dealer Required: Skip the expensive trip to the dealership for programming. This module arrives ready for installation right out of the box.
- โ Guaranteed Compatibility: This module is a direct replacement for service numbers 89017750, 12582605, 12589463, 12602802, 89017734, and 28042802.
Plug-and-Play Installation: No Dealer Visit Required
You can install this module yourself with basic hand tools. Hereโs a general guide for a HUMMER H2:
- Safety First: Disconnect the negative terminal from your vehicle’s battery and wait 10 minutes for the system to discharge.
- Locate the PCM: On most H2 models, the PCM is located in the engine bay on the driver’s side, under the battery tray or near the air filter box.
- Disconnect the Connectors: Carefully unclip the wiring harness connectors from the old PCM. Inspect the connectors for any signs of corrosion or damage.
- Remove the Old Module: Unbolt the old PCM from its mounting bracket and remove it from the vehicle.
- Install the New Module: Bolt your new, pre-programmed PCM into place. Reconnect the wiring harnesses, ensuring they click securely into place.
- Reconnect Battery: Reattach the negative battery terminal. Your vehicle is now ready to start.
Expert Pro Tip: Clean Your Connections
Before plugging in your new PCM, take a moment to spray the vehicle’s harness connectors with a quality electronics cleaner. Use a small, soft brush (like a toothbrush) to gently scrub away any dirt or light corrosion on the pins. A clean, solid connection is critical for the long-term health and performance of your new module.
Order today and restore the reliability and performance of your HUMMER H2. Simply provide your VIN at checkout, and we’ll handle the rest, shipping you a fully programmed, ready-to-install Powertrain Control Module.