Is Your Silverado’s Transmission Acting Unpredictable?
If you’re dealing with harsh, erratic shifting, a check engine light that won’t go away, or your 2007-2013 Silverado 1500 is stuck in limp mode, a failing Transmission Control Module (TCM) is the most likely culprit. The TCM is the electronic brain of your automatic transmission, responsible for orchestrating every gear change and ensuring smooth, efficient operation. When it fails, it can cause a cascade of frustrating and potentially damaging problems, from poor fuel economy to a complete inability to shift gears.
Don’t let a faulty module sideline your truck. This genuine GM T42 Transmission Control Module, part number 24241806, is the definitive solution to restore your vehicle’s performance. It’s not just a replacement part; it’s a complete, ready-to-install fix that arrives pre-programmed to your truck’s specific Vehicle Identification Number (VIN). This critical step ensures perfect communication between the module and your vehicle’s other systems, eliminating the need for expensive and time-consuming programming at a dealership.
From the Diagnostic Bay
We had a 2011 Sierra 1500 come in that was throwing a P0752 (Shift Solenoid ‘A’ Stuck On) code. The owner had already replaced the solenoid twice with no luck. The transmission would slam into gear from a stop and refuse to upshift properly. After a quick diagnostic, we suspected the TCM was sending faulty signals. Instead of another costly internal repair, we installed one of our VIN-programmed T42 modules. The truck immediately started shifting like it just rolled off the factory floor. The problem wasn’t the solenoid itself, but the computer telling it what to do. This module saved the customer hundreds in unnecessary labor and parts.
Signs You Need a New Silverado 1500 TCM
A failing TCM can manifest in various ways. If you’re experiencing any of the following symptoms, it’s time to consider a replacement. This module is engineered to resolve these exact issues, restoring factory performance and reliability.
- âś” Harsh, delayed, or erratic gear shifts that make driving uncomfortable and unpredictable.
- âś” Your truck is stuck in “limp mode,” often locked in 2nd or 3rd gear, with severely limited power.
- âś” The Check Engine Light or a dedicated transmission warning light is illuminated on your dashboard.
- âś” Diagnostic scans reveal transmission-specific DTCs, such as P0700, P0750, P0751, or other solenoid-related codes.
- âś” The transmission slips out of gear, fails to engage, or refuses to upshift or downshift correctly.
- âś” A noticeable decrease in fuel efficiency and potential for the transmission to run hotter than normal.
- âś” Complete loss of communication with the transmission, leading to a no-start or no-shift condition.
Plug-and-Play Installation
This T42 TCM is designed for a straightforward installation. On most Silverado and Sierra models from this era, the module is conveniently located in the engine bay, typically next to the battery. The process usually takes less than 30 minutes. Simply disconnect the battery, unbolt the old module, unplug the electrical connectors, and install the new one in its place. Once the new module is connected and the battery is reconnected, the pre-programmed software takes over, and your truck is ready to go. We recommend using a basic scan tool to clear any stored fault codes after installation to ensure a clean slate for the new module.
Guaranteed Compatibility and Reliability
This module is a direct replacement for a wide range of GM part numbers, including 24252114, 24234503, 24230461, and more, ensuring a perfect fit for your vehicle. Built to strict OEM standards and backed by a one-year warranty, you can drive with confidence knowing your transmission is being managed by a dependable, high-quality component. There is no core charge, so you can dispose of your old part without any hassle.
Frequently Asked Questions
What is a T42 TCM and what does it do?
The T42 TCM is a specific generation of Transmission Control Module used by General Motors in many vehicles with 4-speed automatic transmissions like the 4L60E and 4L70E. It acts as the computer for your transmission, reading data from various sensors to control shift points, torque converter lockup, and line pressure for smooth and efficient operation.
Why is VIN programming so important?
VIN programming loads your vehicle’s specific software, including shift strategies and communication protocols, onto the module before it ships. This makes the module a true plug-and-play part. Without it, the module won’t recognize your vehicle, leading to shifting problems or a complete failure to operate, requiring an expensive trip to a dealer for programming.
Will this fix a P0700 diagnostic trouble code?
A P0700 code is a general fault code indicating the TCM has detected a problem and has requested the check engine light to be turned on. While this module often resolves the root cause (like a faulty solenoid driver circuit inside the TCM), you should always scan for other, more specific ‘P’ codes to confirm the diagnosis. This part is a common fix for P0700 when accompanied by solenoid performance codes.
Where is the TCM located on my 2009 Silverado 1500?
On the 2007-2013 Silverado/Sierra 1500 platform, the T42 TCM is almost always located in the engine compartment, mounted on a bracket right next to the battery.
Do I need to send my old part back?
No, there is no core charge for this module. You can keep or dispose of your old part at your convenience, making the replacement process simpler and faster.