Get Your Tough Hummer H3 Shifting Perfectly Again
Is your 2008-2010 Hummer H3 suffering from frustrating transmission problems like harsh shifting, getting stuck in gear, or a persistent check engine light? A faulty Transmission Control Module (TCM) is often the culprit, crippling the capability you rely on. This genuine GM T42 TCM, service number 24235753, is the definitive solution. We pre-program it to your H3’s specific VIN, making it a true plug-and-play replacement that restores the crisp, reliable performance your vehicle was built for—no expensive trip to the dealership required.
Common H3 Transmission Problems & Your Direct Solution
When the TCM fails, it can feel like your entire vehicle is compromised. You might be experiencing one or more of these common symptoms:
- Abrupt, harsh, or erratic gear changes
- The vehicle is stuck in “limp mode” (usually 2nd or 3rd gear)
- Delayed engagement when shifting from Park to Drive or Reverse
- Check Engine Light or Transmission Warning Light is on
- Diagnostic Trouble Codes (DTCs) such as P0700, P0750, or other solenoid-related faults
- Poor acceleration and decreased fuel economy
This pre-programmed 2008-2010 Hummer H3 Transmission Control Module is the direct answer to these issues, restoring communication between your engine and transmission for optimal performance and reliability on and off the road.
Features & Benefits
- ✔ Plug-and-Play Installation: This module arrives pre-programmed to your vehicle’s exact VIN. Simply install it, and you’re ready to go—no additional programming or dealership visits are necessary.
- ✔ Restored Drivability: Eliminates harsh shifting, hesitation, and limp mode, bringing back the smooth and responsive driving experience you expect from your H3.
- ✔ Solves Annoying Warning Lights: Correctly addresses the root cause of many transmission-related DTCs, allowing you to clear those persistent check engine and transmission lights for good.
- ✔ OEM-Grade Quality: Built to strict General Motors standards, ensuring dependable operation and long-term durability, whether you’re commuting or tackling tough terrain.
- ✔ 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.
- ✔ Peace of Mind: This unit is backed by our one-year replacement warranty.
An Expert’s Insight: As a technician, I’ve seen countless drivers chase transmission issues by replacing solenoids and sensors, only to find the TCM was the real problem. A generic, non-programmed module is a gamble. This VIN-specific 2008-2010 Hummer H3 Transmission Control Module ensures all the unique shifting parameters and software updates for your vehicle are correctly loaded. It’s not just a replacement; it’s a restoration of your H3’s factory-intended logic. This is how you fix it right the first time.
Frequently Asked Questions
What does “VIN Programmed” mean for my Hummer H3?
It means we load the module with the specific software and calibration file from GM that matches your vehicle’s Vehicle Identification Number (VIN). This ensures perfect compatibility with your H3’s engine, transmission, and options, making the installation seamless and effective without needing a dealership’s expensive scan tool.
Is this a difficult part to install myself?
For someone with basic mechanical skills, the installation is straightforward. On the Hummer H3, the TCM is typically located in the right-hand rear of the engine compartment. The process usually takes under 30 minutes. Always disconnect the battery before starting the replacement to ensure the system resets properly.
Do I need to send my old TCM back?
No. This part is sold without a core charge. You can keep, recycle, or dispose of your old module without any obligation to return it to us, simplifying the repair process for you.
How do I know this is the correct part for my vehicle?
This module is a direct replacement for service number 24235753 and is designed specifically for the 2008-2010 Hummer H3. By providing your VIN during checkout, we guarantee it will be programmed correctly for your exact vehicle configuration.
Will this fix a P0700 trouble code?
The P0700 code is a general fault code indicating the TCM has detected a problem. While this module often resolves the underlying issue causing the P0700, it’s always best to have the specific secondary codes read (e.g., P0751, P0756) to confirm the diagnosis. A failing TCM is a very common cause for this code group.
What should I do after installing the new module?
After reconnecting the battery and starting the vehicle, the new module will take over. We recommend using a basic OBD2 scanner to clear any old trouble codes stored in other modules to ensure a clean slate. Then, take the vehicle for a test drive to confirm that shifting has returned to normal.