Restore Your Hummer’s Decisive Shifting
Is your HUMMER H3 suffering from erratic shifting, getting stuck in gear, or throwing transmission codes? A faulty Transmission Control Module (TCM) can cripple your vehicle’s legendary capability, turning every drive into a frustrating and unpredictable experience. This OEM-quality T42 TCM is the definitive solution, arriving pre-programmed to your vehicle’s specific VIN. This eliminates the need for expensive dealership programming, allowing for a straightforward, plug-and-play installation that gets you back on the road and trail with confidence.
Common Symptoms & Your Solution
If you’re experiencing any of the following issues, a failing TCM is the likely culprit. This module is engineered to resolve these problems directly:
- Harsh, delayed, or unpredictable gear shifts
- Vehicle stuck in “limp mode” (usually 2nd or 3rd gear)
- Check Engine Light or transmission warning light is on
- Diagnostic Trouble Codes (DTCs) such as P0700, P0750, or other solenoid-related faults
- Failure to upshift or downshift, leading to poor acceleration and fuel economy
- Complete loss of transmission engagement
Installing this pre-programmed 2008-2010 HUMMER H3 Transmission Control Module is the most effective way to restore your transmission’s electronic brain, ensuring smooth, reliable performance for years to come.
Features & Benefits
- âś” Plug-and-Play Installation: This module is expertly programmed to your vehicle’s VIN before shipping. It’s ready to install right out of the box with no additional programming or dealership visits required.
- âś” Restored Performance & Durability: By precisely managing shift points, torque converter lockup, and line pressure, this TCM restores your H3’s original smooth operation and prevents premature transmission wear.
- âś” OEM-Standard Quality: Built to meet or exceed General Motors’ strict specifications, ensuring dependable operation in all driving conditions, from daily commutes to demanding off-road situations.
- âś” Clear Fault Codes: A new, properly functioning module is essential for resolving persistent transmission-related DTCs and turning off the check engine light.
- âś” Guaranteed Compatibility: This unit is a direct replacement for a wide range of GM part numbers, including 24252114, 24234503, 24240449, and more, guaranteeing a perfect fit for your 2008-2010 HUMMER H3.
- âś” Warranty Protection: This unit is backed by our one-year replacement warranty.
Expert Insight: The Power of Pre-Programming
Many owners don’t realize that a generic, off-the-shelf TCM won’t work correctly without being programmed to the vehicle. This process typically requires a trip to the dealership, specialized tools, and extra labor costs. Our process handles that critical step for you. We flash the module with the latest GM software and your unique VIN, so it communicates perfectly with your H3’s engine computer and other systems from the moment you connect it. This not only saves you time and money but also ensures optimal transmission performance and longevity.
Don’t settle for a compromised driving experience. By replacing your faulty unit with this precision-programmed 2008-2010 HUMMER H3 Transmission Control Module, you are making a direct investment in your vehicle’s reliability and restoring the powerful, confident performance you expect. Installation is simple for a DIYer or any trusted mechanic, typically located in the right-rear of the engine compartment on the H3. Take control of your repair and get your Hummer back to peak condition.
Frequently Asked Questions
What does a Transmission Control Module (TCM) do?
The TCM is the electronic brain of your automatic transmission. It uses data from various sensors to control shift solenoids, manage fluid pressure, and ensure smooth, efficient gear changes for optimal performance and fuel economy.
Is this TCM difficult to install on my HUMMER H3?
Installation is straightforward for someone with basic mechanical skills. On the 2008-2010 H3, the TCM is typically located in the right-rear of the engine compartment. The process involves disconnecting the battery, unplugging the electrical connectors, unbolting the old module, and installing the new one. The entire job usually takes less than 30 minutes.
What does ‘VIN Programmed’ mean for me?
It means the module arrives ready for immediate installation. We use your Vehicle Identification Number (VIN) to load the exact software and calibrations your H3 requires. This eliminates the need for expensive and time-consuming programming at a dealership, making it a true plug-and-play solution.
Will this fix my transmission error codes like P0700?
Yes. A faulty TCM is a primary cause of codes like P0700 (Transmission Control System Malfunction) and various solenoid-specific codes. Replacing the defective module with this properly programmed unit is the correct procedure for resolving these electronic faults and clearing the associated check engine light.
Do I need to send my old part back?
No. We do not require a core return for this part. You can keep or dispose of your old module without any core charges or hassle, simplifying the repair process for you.
How do I know this is the right 2008-2010 HUMMER H3 Transmission Control Module for my vehicle?
This part is guaranteed to fit the 2008-2010 HUMMER H3. It is also a direct replacement for numerous GM part numbers, including 24240449, 24252114, and 24234503. Providing your VIN at checkout ensures we program it perfectly for your specific vehicle configuration.