Your Sierra’s Shifting Problems Solved
When your 2007 GMC Sierra 2500 starts shifting harshly, hesitating, or throwing transmission codes, your workday comes to a grinding halt. A faulty Transmission Control Module (TCM) can make your dependable workhorse feel unreliable and unsafe. This VIN-programmed GM T42 TCM is the definitive solution, engineered to restore the crisp, predictable performance you need to get the job done. It arrives ready for a direct, plug-and-play installation, eliminating the costly and time-consuming trip to a dealership for programming.
Common Symptoms & Your Solution
If your truck is experiencing any of the issues below, a failing module is the most likely cause. Installing our pre-programmed 2007 GMC Sierra 2500 T42 TCM is the direct path to a lasting repair.
- Harsh, erratic, or delayed gear shifts
- Vehicle stuck in “limp mode” (usually 2nd or 3rd gear)
- Check Engine Light or Transmission Warning Light is on
- Diagnostic Trouble Codes (DTCs) like P0700, P0750, or other solenoid-related faults
- Failure to upshift or downshift properly
- Noticeable decrease in fuel economy
- Complete loss of transmission communication
Features & Benefits
- ✔ VIN Programmed for Your Truck: We program the module to your Sierra’s specific VIN before shipping. This ensures perfect communication with your vehicle’s other computers for optimal shift points and performance, right out of the box.
- ✔ Eliminate Dealership Hassles: Because it’s pre-programmed, you can skip the appointment, towing fees, and high labor costs associated with dealership-only programming. Install it yourself or have your local mechanic do it with ease.
- ✔ Restore Peak Drivability: A new, properly functioning TCM restores smooth shifting, improves fuel efficiency, and ensures your transmission operates exactly as the manufacturer intended.
- ✔ Built for Durability: Constructed to meet or exceed strict OEM quality standards, this module is designed to handle the tough demands you place on your Sierra 2500, from towing heavy loads to daily driving.
- ✔ One-Year Replacement Coverage: This unit is backed by our one-year replacement warranty.
From the Technician’s Bench
“After 20 years with a wrench in my hand, I can tell you that chasing intermittent transmission gremlins is one of the biggest headaches for any truck owner. You might replace a solenoid, and the problem comes back. You might flush the fluid, and it’s still not right. Nine times out of ten on these GM trucks, the issue traces back to the logic in the TCM. Getting a pre-programmed module isn’t just a convenience—it’s the right way to do the job. It ensures the computer has the latest software updates and talks to the rest of the truck correctly from the moment you plug it in. This is the fix that prevents comebacks and restores your confidence in the vehicle.”
By installing this high-quality 2007 GMC Sierra 2500 T42 TCM, you are not just replacing a part; you are restoring the core dependability of your truck. This module is a direct replacement for multiple service numbers, including 24235732, 24242391, 24252114, and more, ensuring broad compatibility. Take control of your repair and get your Sierra back to performing at its best.
Frequently Asked Questions
Is this module truly plug-and-play?
Yes. By providing your vehicle’s VIN during checkout, we program the module specifically for your 2007 GMC Sierra 2500. This allows you to install it without needing any additional programming from a dealership or high-end scan tool.
Will this fix my specific transmission error codes like P0700?
A P0700 code is a general fault request from the TCM. This module is the direct solution for internal electronic failures that cause P0700 and related solenoid or shifting codes. Once installed, clear the codes with a standard scanner, and they should not return.
Where is the TCM located on my 2007 Sierra 2500?
On the 2007 ‘new style’ Sierra 2500, the T42 TCM is typically located in the engine compartment, right next to the battery. Always disconnect the battery before beginning the replacement process.
Do I need to send my old TCM back?
No, there is no core charge for this part. You can keep or dispose of your old module, saving you the time and hassle of a return shipment.
What happens if I provide the wrong VIN?
The VIN is critical for correct programming. An incorrect VIN will result in compatibility issues. Please double-check your VIN from your driver’s side door jamb sticker or dashboard plate before ordering to ensure a flawless installation.