Is your 2007-2013 GMC Sierra 1500 experiencing frustrating transmission problems like harsh shifting, getting stuck in gear, or a persistent check engine light? These are classic signs of a failing Transmission Control Module (TCM). Restore your truck’s performance and reliability with this direct-fit, VIN-programmed T42 TCM, part number 24239224. This module is the brain of your automatic transmission, precisely controlling shift points, torque converter lockup, and line pressure to ensure smooth, efficient operation. By ordering our pre-programmed module, you bypass the need for an expensive trip to the dealership for programming, making this a straightforward, cost-effective repair.
From the Diagnostic Bay
We recently had a 2008 Sierra 1500 come into the shop with the check engine light on and complaints of very hard 1-2 shifts. The owner had already replaced a shift solenoid based on a generic code reader’s output, but the problem persisted. Our professional scan tool showed a P0700 (Transmission Control System Malfunction) and several intermittent solenoid circuit codes. Experience told us that multiple, seemingly random solenoid codes often point to the controller, not the solenoids themselves. We installed a VIN-programmed T42 TCM, cleared the codes, and the truck shifted perfectly on the test drive. The issue wasn’t the individual components; it was the central computer failing to command them correctly. This highlights the importance of diagnosing the system, and why a reliable 2007-2013 Sierra 1500 TCM is often the true solution.
Common Symptoms of a Failing Sierra 1500 TCM
- ✔ Harsh, erratic, or delayed gear shifts that make driving uncomfortable.
- ✔ The vehicle enters “limp mode,” often getting stuck in 2nd or 3rd gear.
- ✔ Illumination of the Check Engine Light or Transmission Warning Light on your dash.
- ✔ Diagnostic Trouble Codes (DTCs) such as P0700, P0750, or other transmission-related solenoid codes are stored.
- ✔ Failure to upshift or downshift, leading to poor acceleration and performance.
- ✔ A noticeable decrease in fuel economy as the transmission operates inefficiently.
- ✔ In severe cases, the transmission may not engage at all, leaving you stranded.
Why Choose Our 2007-2013 Sierra 1500 TCM?
This isn’t just a replacement part; it’s a complete solution designed for your convenience and your vehicle’s longevity. The most significant benefit is our complimentary VIN programming service. When you provide your vehicle’s VIN at checkout, we flash the module with the latest GM software specific to your truck. This ensures that it communicates flawlessly with your vehicle’s other systems, like the Engine Control Module (ECM), right out of the box. The result is optimized shift strategies, correct torque converter operation, and restored fuel efficiency, all without requiring dealer-specific tools for installation.
Built to strict OEM specifications, this T42 module ensures durability and reliable performance. It directly interchanges with a wide range of part numbers, including 24252114, 24234503, and 24239224, making it a versatile fix for many GM trucks, vans, and SUVs from this era. With a one-year warranty and no core charge required, you can make your repair with confidence and without the hassle of returning your old part.
Installation and Fitment Information
Installation is a straightforward process for the DIY mechanic. On the 2007-2013 Sierra 1500, the TCM is typically located in the engine bay, next to the battery. The process involves disconnecting the battery, unplugging the electrical connectors from the old module, unbolting it, and installing the new one in its place. Once the new module is connected and the battery is reconnected, the vehicle is ready to go. We recommend using a scan tool to clear any lingering fault codes from the system’s memory after installation to ensure a clean slate.
Frequently Asked Questions
What does ‘VIN Programmed’ mean for my TCM?
VIN programming means we load your vehicle’s specific factory software and calibration files onto the module before we ship it. This ensures the TCM works perfectly with your truck’s engine, transmission, and options, eliminating the need for additional programming by a dealership. It’s a true plug-and-play solution.
Will this module fit vehicles other than the Sierra 1500?
Yes. This T42 TCM is compatible with a wide range of 2006-2014 GM vehicles equipped with 4-speed automatic transmissions like the 4L60E, 4L65E, and 4L70E. This includes models like the Chevrolet Silverado, Tahoe, Suburban, Express Van, GMC Yukon, and Savana, among many others listed in the fitment guide.
Do I need any special tools for installation?
Basic hand tools are all that’s required to physically replace the module. After installation, it is highly recommended to use a standard OBD2 scan tool to clear any stored diagnostic trouble codes from the vehicle’s computer systems.
Will this fix a P0700 trouble code?
A P0700 code is a general fault code indicating the TCM has detected a problem. While this module can resolve the root cause that triggers a P0700, it’s essential to diagnose any other specific codes that accompany it. Often, a failing TCM is the source of these secondary codes.
Is there a core charge for this part?
No, there is no core charge. You are not required to return your old, faulty module, which saves you time and the cost of return shipping.