If your 2007-2013 Silverado 1500 is suffering from harsh shifting, getting stuck in gear, or throwing transmission codes, you’ve likely pinpointed the culprit: a failing Transmission Control Module (TCM). As the electronic brain of your automatic transmission, the T42 TCM dictates every shift point and torque converter operation. When it fails, your truck’s reliability and drivability suffer. This is the definitive, hassle-free solution to restore your truck’s performance without a costly trip to the dealership.
Case Study: A Tricky Diagnosis
I had a 2011 Silverado 1500 in my bay last month that was a real head-scratcher for the owner. It would shift perfectly when cold, but after 20 minutes of driving, it would slam into gear and occasionally get stuck in 3rd (limp mode). He was convinced he needed a full transmission rebuild. After hooking up my scan tool, I saw a generic P0700 code and a specific code for a shift solenoid circuit. While the solenoid was a possibility, my experience with these GM trucks pointed elsewhere. A quick check showed the solenoid’s wiring was fine. The issue was intermittent and heat-related—a classic sign of internal TCM failure. We swapped in one of these VIN-programmed T42 modules, and the truck has been shifting like new ever since. It saved the customer thousands and a lot of unnecessary work.
Is Your Silverado Exhibiting These Telltale Signs?
A faulty TCM can manifest in several ways. If you’re experiencing any of the following, it’s a strong indicator that your module needs replacement:
- ✔ Abrupt, hard, or delayed gear shifts that disrupt your drive.
- ✔ The truck refuses to shift out of a single gear, often known as “limp mode.”
- ✔ Your check engine light is on with transmission-specific Diagnostic Trouble Codes (DTCs) like P0700, P0750, or other solenoid-related faults.
- ✔ Inability to upshift or downshift, leading to poor acceleration and terrible fuel economy.
- ✔ Complete loss of communication with the transmission, making the vehicle undrivable.
The Smart Solution: VIN-Specific Programming
Don’t settle for a generic module that requires expensive dealer flashing. Our process sets this 2007-2013 Silverado 1500 Transmission Control Module apart. We flash the unit with your truck’s specific Vehicle Identification Number (VIN) and the latest GM software updates before it ships. This ensures perfect communication between the TCM, the engine computer, and the transmission itself. It’s a true plug-and-play fix that restores OEM-level functionality right out of the box.
Your 30-Minute Path Back to Smooth Shifting
- ✔ Safety First: Before you begin, disconnect the negative terminal from your truck’s battery to prevent any electrical shorts.
- ✔ Locate the Module: On most 2007-2013 Silverado 1500 models, the TCM is conveniently located in the engine bay, right next to the battery.
- ✔ Disconnect and Remove: Carefully unplug the electrical connectors from the old module. Then, unbolt it from its mounting bracket.
- ✔ Install the New TCM: Bolt the new, pre-programmed module into place and securely reconnect the wiring harnesses. You should hear a click as they lock in.
- ✔ Final Steps: Reconnect the battery terminal. While the module is plug-and-play, it’s best practice to use a basic OBD2 scan tool to clear any stored transmission codes to ensure a clean slate for the new part.
Verified Fitment For Your GM Vehicle
This T42 TCM, also known by part number 24243901, is a direct replacement for a wide range of General Motors vehicles equipped with 4-speed automatic transmissions like the 4L60E, 4L65E, and 4L70E. Please confirm your model and location below:
- Chevrolet Silverado 1500 Pickup (2007-2013): Located next to the battery (2007 new body style; 2009-2013 without hybrid).
- Chevrolet Tahoe / Suburban 1500 / Avalanche 1500 (2007-2009): Located next to the battery.
- GMC Sierra 1500 Pickup (2007-2013): Located next to the battery (2007 new body style; 2009-2013 without hybrid).
- GMC Yukon / Yukon XL 1500 (2007-2009): Located next to the battery.
- Chevrolet Express / GMC Savana Vans (1500/2500/3500, 2006-2014): Located in the RH engine compartment.
- Chevrolet Colorado / GMC Canyon (2008-2012): Located in the RH rear engine compartment.
- Hummer H3 (2008-2010): Located in the RH rear engine compartment.
- …and many other GM cars, trucks, and SUVs from 2006-2014. Please see the full fitment list for details.
Frequently Asked Questions
Do I need to take this module to a dealership for programming?
Absolutely not. The main benefit of our service is that we program the module to your vehicle’s VIN before shipping. It arrives ready for installation, saving you time and money.
Where is the TCM on my 2011 Silverado 1500?
For the 2007-2013 Silverado 1500, the Transmission Control Module is typically mounted on a bracket right next to the battery in the engine compartment, making it very easy to access.
Will this part fix a P0700 trouble code?
In many cases, yes. The P0700 code is a general fault code that simply means the TCM has detected a problem and has requested the check engine light be turned on. Replacing a faulty TCM often resolves the root cause of the P0700 code and any accompanying specific codes.
Is there a core charge for my old part?
No, there is no core charge. You can keep your old module or dispose of it without the hassle of returning it.
This module looks the same, but my part number is slightly different. Will it work?
This T42 TCM is an interchangeable replacement for many part numbers, including 24252114, 24234503, and 24243901. As long as your vehicle is on our compatibility list, this module is the correct fit for your application.