Get Your Silverado Shifting Smoothly Again
If you’re dealing with a 2007-2013 Silverado 1500 that’s shifting harshly, getting stuck in gear, or throwing transmission codes, you know how frustrating it can be. As a technician with over two decades of experience, I’ve seen countless trucks sidelined by a faulty Transmission Control Module (TCM). The TCM is the brain of your automatic transmission, and when it fails, it can mimic a major mechanical problem. This VIN-programmed T42 TCM, part number 24241806, is the reliable, straightforward solution to restore your truck’s performance and get you back on the road with confidence.
We take the guesswork and dealership hassle out of the equation. Before we ship it, we program the module to your truck’s specific Vehicle Identification Number (VIN). This ensures it arrives ready for a true plug-and-play installation, loaded with the latest GM software updates. You get a part that communicates perfectly with your vehicle’s systems, eliminating the need for an expensive trip to the dealer for programming.
Case Study: A Technician’s Notebook
A customer brought in his ’09 Silverado 1500 with a complaint that stumped a couple of other shops. The truck would randomly refuse to shift out of 3rd gear (limp mode) and had a P0700 code, but the transmission fluid was clean and the solenoids tested fine. After hooking up my scan tool, I noticed erratic data coming from the TCM. Heat soak from the engine compartment had caused an internal failure. We installed one of our VIN-programmed T42 modules. In less than an hour, the truck was shifting perfectly, the code was gone, and the customer saved hundreds compared to a dealership diagnosis and repair.
Is Your Silverado Exhibiting These Telltale Signs?
A failing TCM can cause a wide range of issues. If you’re experiencing any of the following, a faulty module is a likely culprit. I’ve diagnosed these symptoms hundreds of times in my shop, and they almost always point to the TCM.
- ✔ Hard, jerky, or delayed gear shifts that disrupt your drive.
- ✔ Your truck is stuck in one gear, often called “limp mode,” to protect the transmission.
- ✔ The Check Engine Light or a transmission warning light is on, with DTCs like P0700, P0750, P0753, P0758, or other solenoid-related codes.
- ✔ A noticeable drop in fuel economy as the transmission isn’t operating efficiently.
- ✔ The transmission seems to slip out of gear or struggles to engage when you shift from Park to Drive or Reverse.
- ✔ Complete loss of communication with the transmission, making the vehicle undrivable.
A Straightforward Guide to Your TCM Replacement
For most DIYers or any professional mechanic, this is a quick job. No specialized tools are needed, and you can have your truck running right in under 30 minutes.
- Safety First: Disconnect the negative terminal from your truck’s battery to prevent any electrical shorts and to help reset the vehicle’s computer systems.
- Locate the TCM: On the 2007-2013 Silverado 1500, the Transmission Control Module is typically located in the engine bay, right next to the battery. It’s a silver box with electrical connectors.
- Disconnect and Remove: Carefully unplug the electrical harnesses from the old module. Press the release tabs firmly. Then, unbolt the module from its mounting bracket.
- Install the New Module: Bolt your new, pre-programmed TCM into place. Securely plug in the electrical connectors until they click, ensuring a solid connection.
- Reconnect and Verify: Reconnect the battery terminal. Start the engine and let it run for a moment. Use a basic OBD-II scan tool to clear any stored diagnostic trouble codes. Take your truck for a test drive to confirm that shifting is smooth and all warning lights are off.
Verified Vehicle Compatibility List
This T42 TCM (part 24241806) is a direct replacement for a wide range of General Motors vehicles equipped with 4-speed automatic transmissions like the 4L60E, 4L65E, and 4L70E. While this page focuses on the 2007-2013 Silverado 1500 Transmission Control Module, it also fits the following models. Please verify your specific application.
- Chevrolet Silverado 1500 Pickup: 2007 (New Body Style), 2008, 2009-2013 (w/o hybrid)
- Chevrolet Avalanche 1500: 2007-2008
- Chevrolet Cobalt: 2006-2010
- Chevrolet Colorado: 2008-2012
- Chevrolet Express/Savana Vans (1500/2500/3500): 2006-2014
- Chevrolet HHR: 2006-2011
- Chevrolet Impala: 2006-2011
- Chevrolet Malibu: 2006-2010
- Chevrolet Monte Carlo: 2006-2007
- Chevrolet SSR: 2005-2006
- Chevrolet Tahoe/GMC Yukon: 2007-2009
- Chevrolet Trailblazer/GMC Envoy: 2006-2009 (8 cylinder)
- Buick Allure/LaCrosse: 2006-2009
- Buick Lucerne: 2006-2011
- Buick Rainier: 2006-2007
- Cadillac DTS: 2006-2011
- GMC Canyon: 2008-2012
- GMC Sierra 1500 Pickup: 2007 (New Body Style), 2008, 2009-2013 (w/o hybrid)
- Hummer H3: 2008-2010
- Pontiac G5/G6/Grand Prix: 2006-2010
- Saturn Aura/Ion/Vue: 2006-2010
- Saab 9-7X: 2006-2009