Get Your Sierra Shifting Like New Again
When your GMC Sierra 2500’s transmission starts acting up, it’s not just an inconvenience—it’s a roadblock that keeps you from getting the job done. Harsh shifts, getting stuck in gear, or a glowing check engine light are signs that your Transmission Control Module (TCM) has likely failed. This VIN-programmed T42 TCM is the definitive, hassle-free solution to restore the reliable performance your work truck demands. It arrives ready for a plug-and-play installation, getting you back on the road without a costly trip to the dealership.
Common Symptoms & Your Solution
A failing TCM can cause a cascade of frustrating and potentially damaging issues. If you’re experiencing any of the following, this module is the component you need to fix the problem at its source. It is the proper repair for the 2007 GMC Sierra 2500 transmission control module when it fails.
- Erratic, harsh, or delayed gear shifts
- Vehicle stuck in “limp mode” (usually 2nd or 3rd gear)
- Active Check Engine Light or Transmission Warning Light
- Diagnostic Trouble Codes (DTCs) such as P0700, P0750, or other solenoid-related faults
- Failure to upshift or downshift properly
- Poor fuel economy and potential transmission overheating
Features & Benefits
- ✔ Plug-and-Play Installation: This module is pre-programmed to your truck’s specific VIN. This means no extra programming or setup is required—simply install it, and you’re ready to go.
- ✔ Restored Performance: By precisely managing shift points, torque converter lockup, and line pressure, this TCM brings back the smooth, predictable operation you expect from your transmission.
- ✔ OEM-Standard Quality: Built to meet or exceed original equipment standards, ensuring long-lasting durability and reliability whether you’re towing a heavy load or just driving daily.
- ✔ Cost-Effective Repair: Avoid the high costs and wait times associated with dealership programming. This is a direct-fit solution that saves you both time and money.
- ✔ Broad Compatibility: This T42 module is a direct replacement for numerous service numbers, including 24252114, 24234503, 24240400, and more, ensuring a perfect fit for a wide range of GM vehicles.
- ✔ Warranty Protection: This unit is backed by our one-year replacement warranty.
Expert Insight from a 20-Year Tech
“I’ve seen countless GM trucks come into the shop with shifting problems that stump less experienced mechanics. They’ll chase solenoids or suspect internal damage, but more often than not, the culprit is the TCM. The critical step is the programming. An unprogrammed module is just a paperweight. By getting a VIN-programmed unit, you’re bypassing the most common failure point of the repair process. You’re not just buying a part; you’re buying a complete solution that ensures the complex electronic handshake between your engine and transmission happens perfectly from the moment you turn the key. For a 2007 GMC Sierra 2500 transmission control module, this is the only way to guarantee a successful, one-time fix.”
Frequently Asked Questions
What does ‘VIN Programmed’ actually mean?
It means we load the module with the latest GM-approved software that is specific to your vehicle’s Vehicle Identification Number (VIN). This ensures all transmission settings, shift strategies, and communication protocols are perfectly matched to your truck’s factory configuration for optimal performance right out of the box.
Is this a difficult part to install myself?
For someone with basic mechanical skills, this is a very straightforward installation. The TCM is typically located in the engine bay, often next to the battery or under the air cleaner box. The process involves disconnecting the battery, unplugging the electrical connectors, unbolting the old module, and installing the new one. It usually takes less than 30 minutes.
Will this fix my 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, it’s essential to diagnose any other specific codes that are present (like solenoid codes). In many cases, replacing a faulty 2007 GMC Sierra 2500 transmission control module is the correct fix for a P0700 code.
Do I need to send my old part back?
No, there is no core charge for this part. You can keep your old module, which saves you the time and hassle of packaging and shipping it back.
Where is the TCM located on my 2007 Sierra 2500?
On the 2007 GMC Sierra 2500 (new body style), the Transmission Control Module is typically located in the engine compartment, right next to the battery.