Restore Peak Transmission Performance to Your 2007 GMC Sierra 2500
Is your 2007 GMC Sierra 2500 experiencing frustrating and unpredictable transmission issues? Hard shifting, getting stuck in gear, or an illuminated check engine light can sideline your powerful truck, disrupting your work and daily life. The Transmission Control Module (TCM) is the electronic brain of your automatic transmission, and when it fails, it can cause a cascade of performance problems. This genuine GM T42 TCM, service part number 24235340, is the definitive solution, arriving pre-programmed to your truck’s specific VIN for a seamless, plug-and-play installation.
Expert Pro Tip
Before installing your new TCM, take a moment to inspect the electrical connectors for any signs of corrosion, moisture, or bent pins. A clean, secure connection is absolutely critical for proper communication between the module and the transmission’s sensors and solenoids. Using a small amount of dielectric grease on the connector seal can help prevent future moisture intrusion.
Is Your Sierra 2500 Showing These Symptoms?
A failing TCM can manifest in several ways. If you’re noticing any of the following issues, it’s a strong indicator that your transmission module may need replacement:
- ✔ Unpredictable, harsh, or erratic gear shifts that slam into gear.
- ✔ The vehicle getting stuck in “limp mode,” often limited to 2nd or 3rd gear.
- ✔ The Check Engine Light or a specific transmission warning light is illuminated on your dash.
- ✔ Diagnostic Trouble Codes (DTCs) such as P0700, P0750, or other solenoid-related codes are stored.
- ✔ Delayed or no engagement when shifting from Park into Drive or Reverse.
- ✔ A noticeable decrease in fuel efficiency.
Why Choose Our Pre-Programmed 2007 Sierra 2500 TCM?
This isn’t just a replacement part; it’s a complete solution designed to get your truck back to factory-spec performance without the hassle. The original TCM in your Sierra 2500 is susceptible to failure from years of heat cycles, engine vibration, and electrical stress. Our module directly addresses these issues by providing a reliable, fully updated component. The most significant benefit is our VIN programming service. We load the latest GM software calibrated specifically for your truck onto the module before it ships. This eliminates the need for expensive trips to the dealership for programming, saving you time and money and ensuring optimal performance right out of the box.
Key Features & Benefits
- ✔ VIN Programmed for Your Truck: Arrives ready for installation with no additional programming required. This ensures perfect communication with your vehicle’s powertrain and resolves software-related DTCs.
- ✔ Restores Smooth Shifting: Directly corrects issues like harsh shifting, gear hunting, and torque converter lock-up problems, providing a smoother driving experience.
- ✔ OEM-Standard Quality: Built to meet or exceed original equipment specifications for durability and long-term reliability, ensuring it can handle the demands of your Sierra 2500.
- ✔ Direct-Fit Replacement: Designed to be a perfect physical match for the original module, making installation straightforward. It is interchangeable with part numbers 24252114, 24234503, 24230461, and more.
- ✔ No Core Charge: Keep your old part without the hassle or expense of returning a core.
Simple Installation
Replacing the 2007 Sierra 2500 TCM is a job that can be completed in your own driveway. On the 2007 Sierra 2500 (new body style), the TCM is typically located in the engine bay, right next to the battery. Simply disconnect the battery, unbolt the old module, carefully disconnect the electrical harnesses, and install the new one in its place. Once installed, reconnect the battery. While the module is plug-and-play, it’s always a good practice to use a scan tool to clear any old fault codes from the system’s memory. This ensures a clean slate for the new module to operate from.
Don’t let a faulty TCM compromise the capability of your truck. This pre-programmed T42 module is the most effective and efficient way to restore your transmission’s health and get your Sierra back to work. Order yours today!
Frequently Asked Questions
Do I need to get this TCM programmed by a dealer?
No. This module comes pre-programmed to your vehicle’s specific VIN. It is ready for installation right out of the box, saving you the time and expense of a dealership visit.
Where is the TCM located on a 2007 GMC Sierra 2500?
For the 2007 Sierra 2500 with the new body style (smooth door skin), the Transmission Control Module is conveniently located in the engine compartment, right next to the battery.
What happens if I don’t replace a failing TCM?
Continuing to drive with a faulty TCM can lead to more severe transmission damage. It can cause excessive wear on clutches and other internal components due to incorrect fluid pressure and shift timing, potentially leading to a complete transmission failure.
Is this part compatible with other vehicles?
Yes, while this is the correct part for your 2007 Sierra 2500, the T42 TCM was used across a wide range of GM vehicles from 2006-2014, including the Silverado, Tahoe, Yukon, Savana, and many others with 4-speed automatic transmissions like the 4L60E and 4L80E.
Is there a core charge for this part?
No, there is no core charge required for this transmission control module. You can keep your old part without any additional fees or hassle.