Regain Control of Your 4WD System
Is the dreaded “Service 4WD” light glaring from your dashboard? Are you unable to switch between 2WD and 4WD, or hearing unsettling noises from your transfer case? A faulty Transfer Case Control Module (TCCM) is often the culprit, leaving you without the crucial four-wheel drive capability your GM truck or SUV was built for. This isn’t just an inconvenience; it’s a reliability issue. This module is the definitive, hassle-free solution to restore your vehicle’s all-terrain confidence.
Common Symptoms & Your Direct-Fit Solution
If you’re experiencing any of the following issues, this module is designed to be the fix. It directly addresses common failure points in the 4×4 system, getting you back on the road and trail quickly.
- Persistent “Service 4WD” or “Service Four Wheel Drive” message
- Selector switch lights are flashing or completely inoperative
- Vehicle is stuck in 2WD, 4-HI, or 4-LO
- Inability to shift the transfer case into the desired mode
- Diagnostic Trouble Codes (DTCs) such as C0306, C0321, C0327, C0374, or C0379
Our Programmed GM Transfer Case Control Module arrives ready for installation. We take the complexity out of the repair by flashing the unit with the latest GM-released software, specifically matched to your vehicle’s unique VIN. This eliminates the need for expensive scan tools or a costly trip to the dealership for programming.
Features & Real-World Benefits
- โ VIN-Specific Programming Included: We flash the module to your exact vehicle before shipping. This makes installation a true plug-and-play process, saving you hundreds in dealership programming fees.
- โ Updated GM Software: Your module comes loaded with the newest software updates from General Motors, which are designed to correct original factory bugs and improve transfer case performance and longevity.
- โ Direct OE-Fit Replacement: Engineered to be a perfect match for the original, this module guarantees a seamless fit and restores factory function without any modifications.
- โ Multi-Part Number Compatibility: This single unit is a verified replacement for a wide range of original part numbers, including 24261367, 12588096, 24239190, and more, ensuring you get the correct component.
- โ Restored System Reliability: Gain the peace of mind that your 4×4 system will engage reliably when you need it most, whether you’re navigating a snowy road, a muddy job site, or a steep boat ramp.
- โ This unit is backed by our one-year replacement warranty.
From the Mechanic’s Bench: The Programming Difference
As a technician, I’ve seen countless truck owners get stuck on this repair. They buy a module online or from a parts store, spend an hour installing it under the dash, and… nothing. The “Service 4WD” light stays on because the module is a blank slate. The vehicle’s computer doesn’t recognize it. The next step used to be a tow or a risky drive to a dealer for a $150-$250 programming fee. This Programmed GM Transfer Case Control Module completely changes the game. By handling the complex programming on our end, we turn a multi-step, professional-level job into a straightforward DIY repair you can confidently complete in your own garage.
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 it is essential for programming the module correctly for your specific vehicle.
Is this part truly plug-and-play?
Yes. Because we pre-program the module to your VIN, it is ready for installation right out of the box. Simply disconnect the battery, swap the old module with the new one, reconnect the battery, and your 4WD system should be fully functional. No further programming is required.
My original part number isn’t 24249095. Will this still work?
Yes, most likely. This module is a direct replacement for a long list of compatible GM part numbers, which are listed in the product details. If your vehicle model is on our fitment list, this module will work, even if the number on your original part is different.
Where is the TCCM located on my vehicle?
On most compatible GM trucks and SUVs (like the Silverado, Sierra, and Tahoe), the Transfer Case Control Module is located inside the cabin, on the driver’s side. It’s typically mounted to a bracket up high in the dashboard, to the left of the steering column, near the emergency brake pedal.
Will this fix a mechanical transfer case problem?
This module controls the electronic functions of the transfer case. It will resolve issues related to communication, sensor readings, and commands to the encoder motor. It will not fix internal mechanical failures like a stretched chain or broken gears. A proper diagnosis is always recommended.