Restore Peak Transmission Performance in Your GM Truck
Is your 2007-2013 GMC Sierra 1500, or another compatible GM vehicle, suffering from erratic shifting, getting stuck in gear, or showing a transmission warning light? These are classic signs of a failing Transmission Control Module (TCM). The TCM is the electronic brain of your automatic transmission, responsible for orchestrating every gear shift, managing torque converter lockup, and ensuring smooth, efficient operation. When it fails, it can cripple your vehicle’s performance and leave you stranded. This genuine OEM-quality T42 TCM, service number 24252114, is the definitive solution to restore your transmission’s functionality and your peace of mind.
The Plug-and-Play Solution: Pre-Programmed for Your Vehicle
One of the biggest hurdles in replacing modern electronic modules is the need for expensive and time-consuming dealership programming. We eliminate that step entirely. Before this module ships, we program it directly to your vehicle’s unique Vehicle Identification Number (VIN). This ensures that it arrives ready for a true plug-and-play installation. It will have the latest GM software updates and will communicate seamlessly with your vehicle’s other computers, like the Engine Control Module (ECM), right out of the box. This process resolves common communication-related Diagnostic Trouble Codes (DTCs) and guarantees optimal shift points and transmission behavior specifically for your truck’s configuration.
From the Diagnostic Bay
We had a 2008 Silverado 1500 come into the shop that was stuck in third gear—a classic ‘limp mode’ case. The customer was worried about a complete transmission rebuild. We scanned it and found a P0700 code (Transmission Control System Malfunction) and several solenoid circuit codes. Instead of jumping to the solenoids, we checked the TCM connections and power. Everything looked fine externally. Knowing these T42 modules are a common point of failure, we swapped in one of our VIN-programmed units. After a 20-minute installation and clearing the codes, the truck was shifting perfectly through all gears on the test drive. It saved the customer thousands over a transmission replacement and got them back on the road the same day.
Common Symptoms of a Failing 2007-2013 Sierra 1500 TCM
A faulty TCM can manifest in several ways, often getting worse over time. If you’re experiencing any of the following issues, your TCM is the most likely culprit. Don’t let a small electronic part lead to major mechanical damage.
- ✔ Harsh or Erratic Shifting: Your truck may slam into gear, hesitate between shifts, or shift at the wrong times.
- ✔ Stuck in Limp Mode: The transmission may refuse to shift out of a single gear (usually 2nd or 3rd) to prevent further damage.
- ✔ Warning Lights: The Check Engine Light or a specific transmission warning light will illuminate on your dashboard.
- ✔ Diagnostic Trouble Codes (DTCs): Common codes include P0700, P0750, P0753, P0758, and other solenoid-related faults.
- ✔ Delayed Engagement: A noticeable delay when shifting from Park into Drive or Reverse.
- ✔ Poor Fuel Economy: Inefficient shifting and torque converter lockup can cause a significant drop in MPG.
- ✔ No Communication: A scan tool may be unable to communicate with the transmission control module, indicating a complete failure.
Simple Installation and Wide Compatibility
This module is designed for a straightforward installation that can typically be completed in under 30 minutes with basic hand tools. Depending on your specific GM model, you’ll find it located in the engine compartment—often next to the battery, on the LH strut tower, or under the air cleaner box. Simply disconnect the battery, unplug the electrical connectors from the old module, unbolt it, and install the new one in its place. Reconnect everything, and you’re ready to go. This T42 TCM is a direct replacement for a wide range of GM vehicles equipped with 4-speed automatic transmissions like the 4L60E, 4L65E, 4L70E, and 4L80E from roughly 2006 to 2014. It interchanges with numerous part numbers, including 24234503, 24230461, 24256960, and many more, making it a versatile solution for your repair needs.
Frequently Asked Questions
What does ‘VIN Programmed’ actually mean?
It means we load your vehicle’s specific factory software and calibration files onto the module using your 17-digit VIN. This makes the module a perfect electronic match for your truck, ensuring it works correctly without needing a trip to the dealer for additional programming.
Will this fix my transmission warning light and codes like P0700?
Yes, if the TCM itself is the root cause of the problem. This module is designed to resolve faults originating from the controller, including communication errors and internal circuit failures that trigger codes like P0700 and related solenoid faults. After installation, you should clear any stored codes with a scan tool.
Is this part difficult to install myself?
For most DIY mechanics, this is a very straightforward job. The module is located in the engine bay and is typically held on by a few bolts with easy-to-access electrical connectors. The most important steps are disconnecting the battery first and ensuring the connectors are seated firmly on the new module.
Do I need to send my old TCM back?
No, there is no core charge for this part. You can keep your old module, recycle it, or dispose of it as you see fit. This saves you the time, cost, and hassle of dealing with a core return.
How do I know if this fits my exact vehicle?
This T42 module fits a wide range of 2006-2014 GM vehicles, including the Sierra, Silverado, Tahoe, Yukon, Express, and many more. The best way to confirm is to match your existing part number to 24252114 or one of the other interchangeable numbers listed. If you are unsure, contact us with your VIN, and we can verify fitment for you.