Restore Your 4WD with a Plug-and-Play Solution
Is the ‘Service 4WD’ light on your dash causing you headaches? Are you unable to switch between 2WD and 4WD, or hearing strange noises from your transfer case? A faulty Transfer Case Control Module (TCCM) is often the culprit, leaving you without the four-wheel-drive capability you rely on. This module is the brain of your 4×4 system, and when it fails, your truck or SUV’s all-terrain readiness is compromised. Get back on the road with confidence with this direct-fit, professionally programmed TCCM.
Common Symptoms & Your Direct-Fit Solution
If you’re experiencing any of the following issues, this module is the definitive solution you need. It directly addresses common failure points in the GMT900 platform, restoring the robust performance you expect from your GM truck or SUV.
- Persistent “Service 4WD” or “Service Four Wheel Drive” message on the instrument cluster
- Inability to shift into or out of 4-High, 4-Low, or Auto 4WD modes
- Selector switch lights flashing or not illuminating at all
- Unusual grinding or clunking noises during attempted shifts
- Diagnostic Trouble Codes (DTCs) such as C0306, C0327, C0374, or B0790
This isn’t just a replacement part; it’s a complete, ready-to-install solution. We flash the module with the latest stable software updates from GM, specifically programmed to your vehicle’s unique VIN. This critical step ensures perfect communication between the TCCM and your vehicle’s other systems, eliminating the need for an expensive trip to the dealership for programming.
Features & Benefits
- ✔ VIN-Programmed for Your Vehicle: Arrives ready for a true plug-and-play installation. Simply provide your VIN after purchase, and we handle the complex programming for you.
- ✔ Restored 4×4 Functionality: Regain complete and reliable control over your four-wheel-drive system, ensuring you’re ready for any weather or terrain.
- ✔ Updated GM Software: We flash each module with the newest software, addressing factory bugs and improving transfer case performance and longevity.
- ✔ Direct-Fit Replacement: Engineered to be a perfect match for the original unit, this module replaces a wide range of compatible part numbers, including 24261367, 24239190, 24240487, and more.
- ✔ Peace of Mind Guarantee: This unit is backed by our one-year replacement warranty.
An Expert’s Note on VIN Programming
As a technician, I’ve seen countless vehicle owners try to save a few dollars by installing a used or non-programmed module. The result is almost always the same: persistent error codes, improper shifting, or even damage to the transfer case encoder motor. The software inside the TCCM must perfectly match your vehicle’s specific options (RPO codes). Our VIN programming service isn’t an add-on; it’s the essential step that makes this repair successful. We ensure the module you receive is precisely calibrated for your truck, saving you time, money, and the frustration of a failed repair.
Frequently Asked Questions
Why is VIN programming so important for this part?
VIN programming is critical because it loads the correct software and calibrations for your specific vehicle’s options, such as the exact transfer case model (NQH, NQF), tire size, and gear ratio. Without it, the module cannot communicate correctly with the rest of your truck, leading to error lights and a non-functional 4WD system. Our service eliminates the need for a dealer visit.
Where is this module located on my vehicle?
The Transfer Case Control Module is typically located on the driver’s side of the dashboard, behind the lower dash panel to the left of the steering column. It’s an accessible location for a straightforward replacement.
Is this a difficult part to install?
For someone with basic mechanical skills and common hand tools, this is a very manageable job. It generally involves removing a few dash panels for access, unplugging the electrical connectors from the old module, unbolting it, and installing the new one in its place. Since our unit is pre-programmed, no special electronic tools are required.
How do I provide you with my vehicle’s VIN?
After you complete your purchase, you will receive instructions on how to send us your 17-digit Vehicle Identification Number (VIN). We must have your VIN to program the module before we can ship your order.
Will this fix my ‘Service 4WD’ light for sure?
If the TCCM has been properly diagnosed as the source of the problem, then yes, this Programmed 12588096 Transfer Case Control Module will resolve the issue and turn off the warning light. However, the ‘Service 4WD’ light can also be triggered by other components like the encoder motor, selector switch, or wiring issues, so proper diagnosis is key.