Is a “Service 4WD” Light Ruining Your Day?
There’s nothing more frustrating than seeing a warning light on the dash of your dependable GM truck or SUV, especially one that compromises its core capability. If you’re unable to switch between 2WD and 4WD, hearing strange noises from the transfer case, or the selector switch is completely unresponsive, a faulty Transfer Case Control Module (TCCM) is the most likely culprit. Don’t let a small electronic box sideline your powerful vehicle. This is the direct, professional-grade solution to restore your truck’s all-terrain confidence.
Common Symptoms & Your Direct-Fit Solution
A failing TCCM can manifest in several ways, often triggering Diagnostic Trouble Codes (DTCs) like C0306, C0327, C0569, or various U-codes indicating a loss of communication. You’re not just buying a part; you’re buying a complete, ready-to-install fix. We take a genuine GM Transfer Case Control Module 24243085 and professionally program it to your vehicle’s specific VIN before it ships. This critical step ensures seamless communication with your truck’s other systems, like the Engine Control Module and Body Control Module, for flawless operation from the moment you install it.
- ✔ VIN-Programmed for You: Skip the expensive and time-consuming trip to the dealership. This module arrives at your door flashed with the latest GM software and calibrated specifically for your truck.
- ✔ Restore Full 4×4 Functionality: Regain complete and reliable control over your 2-Hi, 4-Hi, and 4-Lo settings, ensuring your truck is ready for any weather or terrain.
- ✔ Eliminate Annoying Warning Lights: Clear the persistent “Service 4WD” message and restore your dashboard to its normal, error-free state.
- ✔ Guaranteed Compatibility: This unit is a direct replacement for a wide range of original part numbers, including 24261367, 12588096, 24243085, and more, ensuring a perfect fit and function.
- ✔ Built for Durability: Engineered to meet or exceed original GM specifications for a lasting and reliable repair you can count on.
- ✔ This unit is backed by our one-year replacement warranty.
An Expert’s Note on Programming
As a technician with over two decades of experience, I’ve seen countless people buy a used TCCM from a salvage yard only to find it doesn’t work. Why? Because these modules are not one-size-fits-all. They are coded to the original vehicle’s specific options (RPO codes) and VIN. Installing an unprogrammed or incorrectly programmed module will, at best, not work and, at worst, cause communication conflicts across your vehicle’s network. Our pre-programming service is the most crucial part of this sale—it’s what transforms this part from a paperweight into a true plug-and-drive solution, saving you hundreds in diagnostic and programming fees at a shop.
Take the guesswork out of your repair. By providing us with your VIN upon purchase, you ensure you receive a perfectly matched GM Transfer Case Control Module 24243085 that will get your truck back to 100% capability. It’s the smartest, most efficient way to solve your 4WD problems and get back on the road with confidence. This is the definitive fix for the hardworking Sierra, the versatile Tahoe, and the powerhouse Silverado.
Frequently Asked Questions
How do I provide my VIN for programming?
After you complete your purchase, simply send us a message with your 17-digit Vehicle Identification Number (VIN). We cannot ship your order until we receive this information, as the programming is a required step.
Is this module truly “plug and play”?
Yes. Because we professionally program the module to your specific VIN before shipping, it is ready for installation right out of the box. No further programming or dealer visits are required. This is the key benefit of our service.
What happens if I install a module that isn’t programmed to my truck?
An unprogrammed TCCM will not communicate correctly with your vehicle’s other computers. This means your 4WD system will not function, and the “Service 4WD” light will likely remain on.
How can I be sure my TCCM is the problem?
Common signs include the “Service 4WD” light, the inability to shift between 2WD and 4WD, or the selector switch lights not illuminating correctly. While other issues can cause similar symptoms, a failed TCCM is a very common point of failure for these specific problems on GM trucks.
Will this fit my specific model, like a Yukon Denali or a Silverado 2500?
This GM Transfer Case Control Module 24243085 fits a very wide range of GM trucks and SUVs from 2007-2014. Please review the detailed fitment list in our description to confirm compatibility with your exact year, make, and model.
What original part numbers does this module replace?
This module is a direct replacement for numerous part numbers, including 24261367, 12588096, 24239190, 24240487, 24241143, 24241970, 24242480, 24243084, 24249095, and 24252878. If your original module has any of these numbers, this is the correct part for you.
