Get Your Iconic H2 Back in Command
Is your Hummer H2 running rough, refusing to start, or throwing confusing check engine lights? A failing Powertrain Control Module (PCM) can bring your powerful SUV to a grinding halt, causing immense frustration. This isn’t just a part; it’s the solution to restore the performance and reliability you expect from your H2. We provide a direct-replacement PCM, professionally programmed to your vehicle’s specific VIN with the latest GM software updates. This eliminates the guesswork and the expensive trip to the dealership, getting you back on the road with confidence.
Common Symptoms of a Failing H2 PCM & Your Solution
If you’re experiencing any of the issues below, a faulty engine computer is the most likely culprit. This module is the definitive solution for problems such as:
- Complete no-start or intermittent starting issues
- Poor engine performance, hesitation, or stalling
- Drastically reduced fuel economy
- Erratic or harsh automatic transmission shifting
- Check Engine Light with PCM-specific codes like P0601, P0602, P0606
- Communication errors with diagnostic scan tools
Our Programmed 2003-2007 Hummer H2 PCM is engineered to resolve these issues by restoring the critical link between your vehicle’s engine, transmission, and electronic systems.
Features & Tangible Benefits
- โ Plug & Play Installation: Arrives fully programmed to your vehicle’s VIN. No extra programming or dealer visits are required. Simply install the module, and you’re ready to go.
- โ Optimized Performance: Flashed with the newest stable software from GM, ensuring your engine and transmission operate with maximum efficiency and reliability.
- โ Guaranteed Compatibility: A direct replacement for multiple service numbers including 12582605, 12589463, and 12602802, ensuring a perfect fit and function for your H2 and many other GM trucks and SUVs.
- โ Cost-Effective Solution: Get your vehicle fixed without the high labor costs and markups associated with dealership repairs.
- โ One-Year Replacement Coverage: This unit is backed by our one-year replacement warranty, giving you confidence in your repair.
Expert Tech Tip: Why VIN-Specific Programming is Non-Negotiable
On vehicles like the Hummer H2, the PCM is much more than an engine controller. It’s integrated with the anti-theft system (VATS/Passlock), transmission shift points, and specific options your vehicle was built with. Simply swapping a used module will result in a no-start condition. Our VIN-programming service ensures the new PCM communicates flawlessly with all other modules in your vehicle, just as it did from the factory. This critical step is the key to a successful and lasting repair.
Don’t let a faulty computer keep your legendary truck parked. This Programmed 2003-2007 Hummer H2 PCM is the most reliable and straightforward way to restore your vehicle’s core functions. After your purchase, simply provide us with your VIN, and we’ll handle the complex programming for you.
Frequently Asked Questions
Do I need to do any programming or flashing myself?
Absolutely not. This PCM will arrive at your door fully programmed to your vehicle’s specific VIN. The process is designed to be Plug and Play. All you need to do is install it.
How do I provide my vehicle’s VIN?
After you complete your purchase, you can add your VIN to the order notes or reply to your order confirmation email. We will not ship the part until we have your VIN to ensure perfect programming.
Will this fix my check engine light?
If your check engine light is on due to an internal PCM failure (common codes include P0601, P0602, P0606), then this part is the correct fix. After installation, you should clear all codes with a standard OBD2 scanner to reset the system.
What if my original part number is different from 12582605?
This PCM is a direct replacement for a range of GM service numbers, including 89017750, 12589463, 12602802, and more. As long as your vehicle’s year, make, and model are on our compatibility list, this module will work perfectly, regardless of the number on your old part.
Is a Crankshaft Variation Relearn (CASE Relearn) required?
In most cases for a simple swap, a CASE relearn is not required for the vehicle to start and run. However, for optimal performance and to prevent a potential P0315 code, performing a CASE relearn with a capable scan tool after installation is recommended.