Restore Peak Transmission Performance in Your GM Truck
Is your 2007 GMC Sierra 2500 suffering from harsh shifting, getting stuck in gear, or displaying a check engine light with transmission codes? These are telltale signs of a failing Transmission Control Module (TCM). As the central computer for your automatic transmission, a faulty TCM can severely impact your truck’s drivability, reliability, and fuel economy. This OEM-quality T42 TCM, pre-programmed to your vehicle’s VIN, is the definitive, plug-and-play solution to restore your transmission’s smooth and precise operation.
From the Diagnostic Bay
We recently serviced a 2007 Sierra 2500 HD that was brought in for erratic, hard shifting and being stuck in limp mode (3rd gear). The owner feared a complete transmission failure was imminent. Our diagnostics revealed code P0700, pointing to a general transmission system fault. Knowing the history of these T42 modules, we inspected the TCM first. After installing this VIN-programmed unit—a quick job next to the battery—the truck’s shifting returned to normal immediately. The codes were cleared, and the customer was back on the road, having avoided a thousand-dollar-plus bill at the dealership.
Is Your Truck Experiencing TCM Failure?
A failing TCM can cause a cascade of problems. If your vehicle is exhibiting any of the symptoms below, a replacement module is the most likely solution:
- ✔ Abrupt, jerky, or delayed gear shifts
- ✔ Vehicle is stuck in one gear (limp mode)
- ✔ Illuminated Check Engine Light or Transmission Warning Light
- ✔ Stored Diagnostic Trouble Codes (DTCs) such as P0700, P0751, P0756
- ✔ Inability to shift into higher or lower gears
- ✔ Poor acceleration and reduced fuel efficiency
- ✔ Complete loss of communication with the transmission
Why Choose Our Programmed 2007 Sierra 2500 TCM?
When replacing a critical electronic component like the 2007 Sierra 2500 TCM, proper programming is everything. Our module eliminates guesswork and additional expenses. It is programmed using the latest GM software updates specific to your truck’s VIN, ensuring it works seamlessly with the engine control module and other vehicle systems right out of the box. This direct-fit module restores factory shift strategies, manages torque converter lockup efficiently, and resolves persistent electronic faults that plague failing units. Don’t settle for a generic part that requires a trip to the dealer; get the right solution, programmed and ready for installation.
Simple, Hassle-Free Installation
Designed for both professional mechanics and DIYers, this TCM can be installed in under 30 minutes. On most 2007 Sierra models, it’s conveniently located in the engine bay next to the battery. Simply disconnect the battery, unplug the connectors from the old module, swap it with the new one, and reconnect everything. Once installed, use a standard OBD2 scanner to clear any old codes. Best of all, there is no core charge, saving you the time and money of returning the old part.
Guaranteed Compatibility and Reliability
This T42 TCM is a direct replacement for a wide range of GM vehicles from 2006-2014 equipped with 4-speed automatic transmissions like the 4L60E, 4L65E, 4L70E, and 4L80E. It interchanges with multiple service numbers, including 24230461, 24242391, 24234503, and 24252114. Built to meet or exceed OEM standards and backed by a one-year warranty, you can drive with confidence knowing your transmission is controlled by a reliable, high-quality component. This is the ideal fix for your 2007 Sierra 2500 TCM issues.
Frequently Asked Questions
What does the Transmission Control Module (TCM) do?
The TCM is a computer that acts as the brain for your automatic transmission. It receives data from various sensors on the engine and vehicle, and uses this information to control shift solenoids, regulate fluid pressure, and determine the optimal gear for any driving condition, ensuring smooth performance and efficiency.
Does this module require additional programming at a dealership?
No. This module is delivered to you pre-programmed to your vehicle’s specific VIN. This means it is ready for plug-and-play installation right out of the box, saving you the time and expense of a dealership visit for programming or flashing.
Is this part difficult to install myself?
For most individuals with basic mechanical skills, the installation is straightforward. It typically involves disconnecting the battery, unplugging a few connectors, and removing a few bolts. On the 2007 Sierra 2500, the TCM is easily accessible in the engine compartment. The entire process usually takes less than 30 minutes.
What happens if I don’t replace a failing TCM?
Ignoring a failing TCM can lead to more severe problems. Continued erratic shifting can cause excessive wear on internal transmission components like clutches and bands, potentially leading to a complete transmission failure that is far more expensive to repair.
How do I ensure this is the correct part for my truck?
This module fits a wide range of GM vehicles, including the 2007 Sierra 2500. You can verify the fit by matching the part number 24230461 or one of the interchangeable numbers listed in the description. When you order, we will use your VIN to confirm compatibility and program the module correctly.