Get Your Sierra Shifting Smoothly Again
Is your GMC Sierra 1500 suffering from harsh, erratic shifting, getting stuck in gear, or throwing transmission codes? A failing Transmission Control Module (TCM) can bring your dependable truck to a standstill, disrupting your work and your daily life. This OEM-quality T42 TCM is the definitive, hassle-free solution. It arrives pre-programmed to your truck’s specific VIN, making installation a straightforward, plug-and-play process that gets you back on the road with confidence.
Common Symptoms & Your Solution
If you’re experiencing any of the following issues, a faulty TCM is the likely culprit. This module is engineered to resolve these problems directly:
- Abrupt, harsh, or delayed gear shifts
- Vehicle stuck in “limp mode” (usually 2nd or 3rd gear)
- Check Engine Light or Transmission Warning Light is on
- Diagnostic Trouble Codes (DTCs) like P0700, P0750, or other solenoid-related codes
- Failure to upshift or downshift properly
- Poor fuel economy and potential transmission overheating
Installing our Programmed 2007-2013 Sierra 1500 Transmission Control Module restores the precise, factory-level communication between your engine and transmission, eliminating these frustrating symptoms and restoring the reliable performance you depend on.
Features & Benefits
- ✔ VIN-Programmed for Your Truck: This module is flashed with the latest GM software and coded to your vehicle’s unique VIN. This ensures perfect compatibility and function right out of the box.
- ✔ No Dealership Visits Required: Skip the expensive and time-consuming trip to the dealer for programming. This is a true plug-and-play solution designed for the professional technician or capable DIYer.
- ✔ Restores Transmission Performance: By precisely managing shift points, torque converter lockup, and line pressure, this TCM brings back the smooth, predictable operation your transmission was designed for.
- ✔ Built to OEM Standards: Engineered for durability and reliability, this module is designed to withstand the demanding conditions of your work truck or daily driver.
- ✔ Direct-Fit Replacement: Replaces a wide range of original part numbers, including 24243921, 24252114, 24234503, and more, guaranteeing a perfect fit.
- ✔ Warranty Protection: This unit is backed by our one-year replacement warranty.
Expert Insight: Why VIN Programming is Non-Negotiable
In modern vehicles like your Sierra, the TCM isn’t just a simple computer—it’s the central nervous system of your transmission, integrated with the engine, ABS, and other vehicle systems. A generic, non-programmed module simply won’t work. It lacks the specific instructions (shift strategies, torque limits, tire size) for your truck’s exact configuration. Our VIN programming process ensures this Programmed 2007-2013 Sierra 1500 Transmission Control Module has the precise digital handshake it needs to function flawlessly from the moment you connect it, saving you from driveability issues and return trips to the shop.
Frequently Asked Questions
Is this part truly plug-and-play?
Yes. Because we program the module to your specific VIN before shipping, it is ready for installation right out of the box. No further programming or dealership intervention is required. We recommend disconnecting the battery during installation to help clear any old codes.
Where is the TCM located on my 2007-2013 Sierra 1500?
On the 2007-2013 GMC Sierra 1500 (and its Chevrolet Silverado counterpart), the T42 TCM is typically located in the engine compartment, right next to the battery. It’s an easy-to-access location that makes for a quick installation, usually under 30 minutes.
Do I need to send my old TCM back?
No, there is no core charge for this part. You can keep or dispose of your old module, saving you the time and expense of return shipping.
Will this fix a P0700 trouble code?
A P0700 code is a general fault code indicating that the TCM has detected a problem and has requested the Check Engine Light be turned on. While this Programmed 2007-2013 Sierra 1500 Transmission Control Module often resolves the root cause (an internal TCM failure), it’s crucial to diagnose any other codes that are present to ensure there aren’t external issues like faulty solenoids or wiring.
What vehicles does this TCM fit besides the Sierra?
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 Tahoe, Silverado, Express Van, GMC Yukon, Savana Van, Cadillac DTS, and many others. Please check the detailed fitment list to confirm for your specific vehicle.