Restore Your H3’s Unstoppable Performance
Is your 2006 Hummer H3 running rough, shifting erratically, or refusing to start? A failing Powertrain Control Module (PCM) can bring your rugged SUV to a halt, causing frustrating and unpredictable issues. This isn’t just an inconvenience; it’s a compromise on the reliability and power you expect from a Hummer. Get back on the road and trail with confidence with this fully programmed engine computer, designed to be the definitive, hassle-free solution to your vehicle’s electronic troubles. We make it simple: provide your VIN, and we’ll ship a module that’s plug-and-play ready, flashed with the latest official GM software. This is the most reliable way to get your H3 running like new again.
Common Symptoms & Your Solution
If you’re experiencing any of the following, a faulty PCM is the likely culprit. This module is the direct fix for issues such as:
- Complete no-start condition or intermittent starting
- Poor fuel economy and engine performance
- Harsh or incorrect automatic transmission shifting
- Check Engine Light with Diagnostic Trouble Codes (DTCs) like P0601, P0602, P0606, or U0100
- Stalling, sputtering, or rough idling
By installing our 2006 Hummer H3 PCM programmed specifically for your vehicle, you’re not just replacing a part—you’re restoring the core of its operational command system.
Features & Benefits
- âś” VIN-Specific Programming: We flash the module with your vehicle’s exact VIN, ensuring perfect compatibility and eliminating the need for expensive dealership programming.
- âś” Latest GM Software Updates: Your PCM comes loaded with the newest software from General Motors, which corrects original factory bugs and often improves fuel efficiency and transmission performance.
- âś” Plug-and-Play Installation: Once you perform the simple security relearn procedure, this unit is ready to go. No complex setup required.
- âś” Guaranteed Fitment: This module is a direct replacement for a wide range of part numbers, including 12569773, 12591647, 12606399, and many more, ensuring it’s the right part for your truck.
- âś” Restored Drivability: Get back the smooth idle, crisp throttle response, and reliable performance your H3 was built for.
- âś” This unit is backed by our one-year replacement warranty. Your purchase is protected, giving you complete peace of mind.
Expert Technician’s Insight
As a technician with over two decades of experience, I’ve seen countless drivers waste time and money on generic, unprogrammed modules from salvage yards. The problem is that a PCM is not a one-size-fits-all part. It’s the brain of your H3, and it needs to communicate perfectly with your specific engine, transmission, and security system. A properly programmed unit, like this 2006 Hummer H3 PCM programmed to your VIN, prevents a host of follow-up issues like communication errors and persistent check engine lights. This isn’t just a part; it’s a complete, professional-grade solution that gets the job done right the first time.
Frequently Asked Questions
What information do you need from me?
After you place your order, we will need your vehicle’s 17-digit Vehicle Identification Number (VIN) to program the module. You can typically find this on your dashboard (visible through the windshield) or on your vehicle’s registration or insurance card.
Is this module difficult to install?
The physical installation is straightforward for anyone with basic mechanical skills. The module is located on the RH firewall. After installation, you will need to perform a simple security relearn procedure (often called a key relearn), which pairs the new PCM to your vehicle’s anti-theft system. Instructions for this procedure are readily available online and do not require special tools.
Will I need to do anything else after installation?
In addition to the security relearn, some vehicles may require a Crankshaft Variation Relearn (CASE relearn) to clear a P1336 trouble code. This procedure requires a scan tool capable of performing this specific function. Many local repair shops can perform this for a small fee if needed.
How do I know if my PCM is actually bad?
Common signs of a failing PCM include a no-start condition where the engine cranks but won’t fire, erratic shifting, a persistent Check Engine Light with communication-related codes (like P0601), and multiple unrelated sensor codes appearing at once. A professional diagnosis is always recommended, but these are strong indicators.
Is this a brand new part?
This is a professionally prepared, tested, and guaranteed functional OEM part. Each unit is inspected and programmed with the latest GM software to ensure it meets or exceeds original performance specifications.