Get Your Hummer H3 Back on the Trail, Fast.
A Hummer H3 isn’t just a vehicle; it’s a statement of capability and readiness for any terrain. When your transmission starts acting upโwith harsh shifts, getting stuck in gear, or flashing warning lightsโthat confidence is lost. This isn’t just an inconvenience; it sidelines your adventure. Get back the dependable, rugged performance you expect with our pre-programmed T42 Transmission Control Module (TCM), the definitive solution for your 2008-2010 Hummer H3.
Common Symptoms & Your Solution
If your H3 is experiencing any of the issues below, a failing TCM is the most likely culprit. This module is the brain of your automatic transmission, and when it falters, the symptoms are impossible to ignore. Our VIN-programmed unit is engineered to be the direct fix for:
- Harsh, jerky, or delayed gear shifts
- Vehicle stuck in “limp mode” (usually 2nd or 3rd gear)
- Check Engine Light and transmission warning lights on the dash
- Diagnostic Trouble Codes (DTCs) such as P0700, P0750, or other solenoid-related faults
- Failure to upshift or downshift properly
- Noticeable decrease in fuel economy
- Intermittent loss of communication with the transmission
Features & Benefits
- โ Plug & Play Installation: We program this module to your H3’s specific VIN before shipping. This means no expensive trips to the dealership for programmingโjust install it and go.
- โ Restored Drivability: Eliminates erratic shifting and limp mode, restoring the smooth, predictable transmission performance your vehicle had when it was new.
- โ Reliable OEM-Standard Quality: Built to meet or exceed original equipment specifications, ensuring it can handle everything from daily driving to demanding off-road conditions.
- โ Cost-Effective Repair: Save hundreds of dollars by avoiding dealership programming fees and complex diagnostics. This is the most direct path to a reliable repair.
- โ No Core Charge: Keep your old part. We don’t require a core return, saving you the time, cost, and hassle of shipping your old module back.
- โ Peace of Mind Protection: This unit is backed by our one-year replacement warranty.
Expert Insight: Why VIN Programming is Non-Negotiable
In a vehicle as capable as the Hummer H3, the TCM doesn’t just change gears; it constantly communicates with the Engine Control Module (ECM) to manage torque, shift points, and fuel efficiency based on dozens of parameters. A generic, non-programmed module can’t do this correctly. It can lead to persistent performance issues or even damage to your transmission. Our VIN-specific programming loads the exact software and calibrations GM designed for your vehicle, ensuring all systems work in perfect harmony from the moment you turn the key. It’s the only way to guarantee a correct and lasting repair.
Don’t let a faulty computer chip undermine the legendary toughness of your rig. By installing our precisely configured 2008-2010 Hummer H3 TCM 24252114, you’re not just replacing a part; you’re restoring the core capability and reliability of your vehicle. Order today and get your Hummer ready for its next adventure.
Frequently Asked Questions
What does ‘VIN Programmed’ actually mean?
It means we use your vehicle’s 17-digit Vehicle Identification Number (VIN) to load the exact, factory-correct software and calibrations onto the module before we ship it to you. This makes the unit ready for immediate installation without any need for a dealership scan tool or special equipment.
Is this a difficult part to install myself?
For most DIYers with basic tools, this is a straightforward job. On the 2008-2010 Hummer H3, the TCM is typically located in the right-hand rear of the engine compartment. The process involves disconnecting the battery, unplugging the electrical connectors, unbolting the old module, and installing the new one. Most installations take under 30 minutes.
Will this module fix a P0700 trouble code?
A P0700 code is a general fault code indicating the TCM has detected a problem. While this module often resolves the root cause of a P0700, it’s essential to have the vehicle scanned for other specific codes (like solenoid or sensor codes) that the P0700 is pointing to. In many cases, a faulty TCM is the primary issue.
Do I need to return my old TCM?
No. We do not require you to return your original part. There is no core charge or extra fee, which simplifies the process for you.
Is this the correct part for my vehicle?
This module, part number 24252114, is the correct fit for the 2008-2010 Hummer H3. It also replaces a wide range of other GM service numbers. Providing your VIN at checkout ensures we program it perfectly for your specific vehicle configuration.