Restore Flawless Shifting to Your GM Truck
If your 2007 GMC Sierra 2500 is suffering from erratic shifting, delayed gear engagement, or has thrown a check engine light with transmission codes, the problem often lies with a failing Transmission Control Module (TCM). As the electronic brain of your automatic transmission, a faulty TCM can cause a host of drivability issues, turning your reliable workhorse into a source of frustration. This OEM-quality T42 TCM, part number 24252114, is the definitive solution, arriving pre-programmed to your vehicle’s specific VIN for a true plug-and-play repair.
Over my 20 years in diagnostics, I’ve seen countless GM trucks and SUVs come into the shop with what seems like a major transmission failure. More often than not, the root cause isn’t the hard parts inside the transmission case, but this critical electronic module. This replacement restores the precise communication needed between the engine and transmission, ensuring smooth, predictable performance just like the day it left the factory.
Case Study: A Tricky Diagnosis
A customer brought in his ’07 Sierra 2500 with a 6.0L, complaining of intermittent ‘limp mode’ where the truck would get stuck in 3rd gear. He’d already replaced a shift solenoid based on a generic code, but the problem persisted. After connecting my scan tool, I noticed erratic data from the TCM and a history of communication loss codes (U-codes) alongside the solenoid code. This is a classic sign of a failing module. Instead of a costly transmission teardown, we installed a VIN-programmed TCM. The truck’s shifting logic was instantly restored, and the customer was back on the road in under an hour, saving him from an unnecessary and expensive repair.
Is Your Sierra Exhibiting These Telltale Signs?
A failing TCM can manifest in several ways. If you’re experiencing any of the following, it’s a strong indicator that your module needs attention:
- ✔ Harsh, slamming shifts or jerky gear changes.
- ✔ The vehicle is stuck in one gear (often called ‘limp mode’).
- ✔ Delayed engagement when shifting from Park to Drive or Reverse.
- ✔ Active Check Engine Light or Transmission Warning Light with codes like P0700, P0750, or other solenoid-related DTCs.
- ✔ A sudden drop in fuel efficiency.
- ✔ The transmission seems to slip between gears.
- ✔ Complete loss of communication with the transmission.
A Straightforward Guide to Your TCM Installation
One of the best features of this part is its simple installation. For a 2007 Sierra 2500 Transmission Control Module, the process is quick and doesn’t require specialized tools. You can have your truck running smoothly again in about 30 minutes.
- Safety First: Always disconnect the negative terminal from your vehicle’s battery before starting any electronic component replacement.
- Locate the Module: On your 2007 Sierra 2500 (new body style), the TCM is typically located in the engine bay, right next to the battery.
- Disconnect and Remove: Carefully unplug the electrical connectors from the old TCM. Then, unbolt the module from its mounting bracket.
- Install the New Module: Mount your new, pre-programmed TCM onto the bracket and securely plug in the electrical connectors. You’ll hear a click when they are properly seated.
- Reconnect and Verify: Reconnect the negative battery terminal. Start the vehicle and allow it to run for a few minutes. If you have a basic scan tool, use it to clear any stored fault codes.
Verified Fitment Across a Range of GM Vehicles
While this is a perfect solution for the 2007 Sierra 2500 Transmission Control Module, it is also compatible with a wide array of General Motors cars, trucks, and SUVs equipped with 4-speed automatic transmissions like the 4L60E, 4L65E, 4L70E, and 4L80E. This module is interchangeable with part numbers 24234503, 24230461, 24255280, and others. Please see the detailed list below to confirm your vehicle’s compatibility.
Fits Models Including:
SIERRA 2500 PICKUP 07 (new style, smooth door skin), 6.0L, (next to battery)
SILVERADO 2500 PICKUP 07 (new style, smooth door skin), 6.0L, (next to battery)
TAHOE 07-09 (next to battery)
YUKON 07-09 (next to battery)
SAVANA/EXPRESS VANS 1500/2500/3500 06-14 (RH engine compartment)
COLORADO/CANYON 08-12 (RH rear engine compartment)
HUMMER H3 08-10 (RH rear engine compartment)
… and many more GM vehicles from 2006-2014. Please verify your specific model and location from the full fitment list.
Frequently Asked Questions
What does ‘VIN Programmed’ actually mean?
It means we load your vehicle’s unique Vehicle Identification Number (VIN) and the latest GM software onto the module before shipping. This ensures it communicates perfectly with your truck’s other computers right out of the box, with no need for a trip to the dealership for expensive programming.
Do I need any special tools for this installation?
No. Basic hand tools, such as a socket set to remove the mounting bolts and disconnect the battery, are all that’s required. The entire process is designed to be straightforward for a DIY mechanic.
Will this part fix a P0700 diagnostic trouble code?
A P0700 code is a general transmission fault request, meaning the TCM has detected a problem and asked the main computer to turn on the check engine light. While a faulty TCM can cause a P0700, this code is often accompanied by other, more specific codes. If the root cause is a failing module, this part will resolve the issue.
Is there a core charge for this part?
No, there is no core charge. You are not required to send your old, faulty module back to us, saving you time and return shipping costs.
What kind of warranty is included?
This module is backed by our one-year warranty, giving you confidence and peace of mind in your repair.