Restore Your Truck’s 4-Wheel Drive Capability
Is the dreaded “Service 4WD” light glaring from your dashboard? Are you unable to switch between 2WD, 4-High, or 4-Low? A failing Transfer Case Control Module (TCCM) is one of the most common reasons for these frustrating and capability-limiting issues on GM trucks and SUVs. This isn’t just an inconvenience; it’s a loss of the core function you depend on. Get back in control with this direct-fit, pre-programmed TCCM that gets your truck back to full strength without a mandatory, expensive trip to the dealership.
Common Symptoms & Your Direct-Fit Solution
If your truck is experiencing any of the following, a faulty TCCM is the likely culprit. This module is the definitive solution for:
- “Service 4WD” or “Service Four Wheel Drive” message on the instrument cluster
- Inability to shift the transfer case into or out of 4WD modes
- Flashing lights on the 4WD selector switch
- No response from the 4WD selector switch
- Diagnostic Trouble Codes (DTCs) such as C0306, C0321, C0327, C0569, or U-series communication codes.
We solve the biggest hurdle in this repair: programming. Each programmed 24239190 TCCM is flashed with the latest stable GM software specifically matched to your vehicle’s VIN. This ensures seamless communication with your truck’s other modules and restores factory performance and reliability right out of the box.
Features & Tangible Benefits
- ✔ VIN-Programmed for Your Truck: Your module arrives ready for installation. No need for expensive scan tools or a trip to the dealer for programming. This is a true plug-and-play fix.
- ✔ Loaded with Latest GM Updates: We flash the module with the most current software, addressing common bugs and improving operational logic over your old, outdated unit.
- ✔ Restores Full 4WD Functionality: Regain complete and reliable control over your 2WD, 4HI, 4LO, and Auto 4WD (if equipped) settings, ensuring your truck is ready for any terrain or weather.
- ✔ Direct OEM-Spec Replacement: Engineered to meet or exceed original equipment specifications for a perfect fit and flawless integration with your vehicle’s existing wiring and mounting points.
- ✔ Broad Model Compatibility: Replaces a wide range of original part numbers, including 24261367, 12588096, 24240487, and more, giving you confidence you’re ordering the correct part.
- ✔ This unit is backed by our one-year replacement warranty.
An Expert’s Note on GM TCCM Failures
As a technician, I’ve seen countless Sierra and Silverado owners frustrated by 4WD issues. Often, the problem isn’t a mechanical failure in the transfer case itself, but this electronic control unit. Water intrusion, voltage spikes, and simple component age can cause internal failure. The old way involved installing a blank module and towing the truck to a dealer for a costly programming session. This programmed 24239190 TCCM changes the game. It empowers you or your trusted mechanic to complete the entire job in your own garage or shop, saving significant time, money, and hassle. It’s the smart, efficient way to get your rig back to 100%.
Frequently Asked Questions
How do I provide my VIN for programming?
After you complete your purchase, you will need to send us your 17-digit Vehicle Identification Number (VIN). We cannot ship the module until we receive this information, as it is essential for the custom programming process.
Is this really a plug-and-play part?
Yes. Because we pre-program the module to your specific VIN, it is ready to be installed and function immediately. No further programming or calibration is required. Simply disconnect the battery, swap the modules, and reconnect the battery.
Where is the TCCM located on my 2009 Sierra 2500?
On most 2007-2014 GM trucks and SUVs, the Transfer Case Control Module is located behind the dashboard on the driver’s side, to the left of the steering column. Access typically involves removing the lower dash panel.
Will this fix the “Service 4WD” light?
If the light is caused by a faulty TCCM, then yes, this part is the correct solution. We always recommend a proper diagnosis to confirm the TCCM is the point of failure before ordering, as other issues (like a faulty encoder motor or switch) can sometimes cause similar symptoms.
What is the difference between this and a used module from a junkyard?
A used module is programmed to the donor vehicle’s VIN and options. Installing it in your truck will likely cause communication errors or improper function. Our programmed 24239190 TCCM is specifically flashed for your truck and has the latest software, ensuring correct operation from the start.