Is your 2007 GMC Sierra 2500 fighting you on every shift? A faulty Transmission Control Module (TCM) can sideline even the toughest truck, causing erratic shifting, poor performance, and leaving you stuck in limp mode. Get your heavy-duty truck back on the job with this direct-fit, VIN-programmed T42 Transmission Control Module. It arrives ready for a plug-and-play installation, completely eliminating the need for an expensive trip to the dealership for programming. This is the straightforward, reliable fix to restore the crisp, predictable shifting your Sierra was built for.
Common Symptoms & Your Solution
A failing TCM can manifest in several ways, turning your dependable workhorse into a source of frustration. If you’re experiencing any of the following, this module is the definitive solution:
- Harsh, delayed, or unpredictable gear shifts
- The vehicle is stuck in a single gear (limp mode)
- Illuminated Check Engine Light or Transmission Warning Light
- Diagnostic Trouble Codes (DTCs) such as P0700, P0750, or other solenoid-related codes
- A sudden drop in fuel efficiency or transmission overheating
- Complete failure to shift gears
Installing this pre-programmed 2007 GMC Sierra 2500 T42 TCM directly addresses the root cause of these issues, restoring communication between your engine and transmission for optimal performance.
Features & Benefits
- ✔ Plug & Play Installation: This module is professionally programmed to your truck’s specific VIN number. This ensures it works perfectly right out of the box, with no additional programming or setup required.
- ✔ Restores Shifting Performance: Eliminates harsh shifting and gear hunting by restoring precise control over shift points, line pressure, and torque converter lockup, making your truck drive like new again.
- ✔ Cost-Effective Repair: By avoiding mandatory dealership programming fees, you save significant time and money, getting a high-quality repair without the high-end cost.
- ✔ Built for Durability: Engineered to meet or exceed original equipment standards, this module is built to handle the demanding conditions a Sierra 2500 endures, from heavy towing to daily work.
- ✔ Guaranteed Peace of Mind: This unit is backed by our one-year replacement warranty.
Expert Insight: The Critical Role of VIN Programming
For GM vehicles of this era, the TCM is not a one-size-fits-all component. It’s the brain of your transmission, and it needs to speak the exact same language as your truck’s main computer (ECU). Our VIN programming process flashes the module with the latest GM software specific to your Sierra 2500’s factory build. This crucial step ensures all shift strategies and electronic parameters are perfectly calibrated, preventing the common performance issues and fault codes that arise from using a generic, non-programmed module.
By investing in a properly configured 2007 GMC Sierra 2500 T42 TCM, you’re not just replacing a part; you’re ensuring the long-term health and reliability of your entire drivetrain. This module is also a direct replacement for a wide range of GM part numbers, including 24252114, 24234503, 24241806, and 24256960.
Frequently Asked Questions
What exactly does ‘VIN Programmed’ mean?
It means we load the module with your truck’s unique 17-digit Vehicle Identification Number (VIN) before shipping. This process installs the correct software and calibrations for your specific engine, transmission, and factory options, making it a true plug-and-play part.
Do I need a mechanic to install this 2007 GMC Sierra 2500 T42 TCM?
While professional installation is always an option, this is a straightforward job for a confident DIYer. The TCM is typically located next to the battery in the engine bay. The process involves disconnecting the battery, unplugging the old module, and plugging in the new one. No special tools are required.
Will this fix my transmission error codes?
Yes, this module is designed to resolve common transmission-related DTCs, especially P0700 (Transmission Control System Malfunction) and various solenoid codes. After installation, it’s recommended to clear any stored codes with a basic OBD2 scanner.
Is there a core charge for my old part?
No, there is no core charge. You can keep your old part without any hassle or need to return it, simplifying the repair process for you.
How can I be sure this is the right part for my truck?
This part is confirmed to fit the 2007 GMC Sierra 2500 with the 6.0L engine (new body style). You can also cross-reference the part numbers listed in the description with your existing module to ensure a perfect match.