Restore Your 4WD and Eliminate That Annoying Light
Is that “Service 4WD” light on your dash causing you headaches? Are you unable to switch between 2WD and 4WD, or stuck in one mode? A failing Transfer Case Control Module (TCCM) is the most common culprit on these GM trucks and SUVs. Instead of paying for expensive diagnostics and programming fees at the dealership, get the definitive, ready-to-install solution. This Programmed 24249095 Transfer Case Control Module arrives flashed with the latest GM software and coded specifically to your vehicle’s VIN, making the repair as simple as swapping the part.
Common Symptoms & Your Solution
If you’re experiencing any of the following issues, a faulty TCCM is the likely cause. This module is the direct fix for:
- “Service 4WD” or “Service Four Wheel Drive” message on the instrument cluster.
- Inability to shift the transfer case into or out of 4-High, 4-Low, or Auto modes.
- Selector switch lights are inoperative or flashing.
- Diagnostic Trouble Codes (DTCs) such as C0306, C0327, C0398, or U1000.
- Unusual noises from the transfer case during attempted shifts.
This module restores communication between the selector switch, the transfer case encoder motor, and your vehicle’s main computer, bringing your four-wheel-drive system back to full operational status.
Features & Benefits
- ✔ Plug-and-Play Installation: This module is pre-programmed to your specific VIN. No dealer visits or expensive programming tools are required.
- ✔ Guaranteed Compatibility: A direct replacement for a wide range of original part numbers, including 24261367, 12588096, 24239190, and more, ensuring a perfect fit and function.
- ✔ Updated GM Software: We flash each unit with the newest stable software from General Motors, addressing known bugs and improving performance over the original module.
- ✔ Restores Full Functionality: Regain complete and reliable control of your 4WD system for all-weather safety and off-road capability.
- ✔ Cost-Effective Repair: Save hundreds of dollars compared to the cost of a new part and programming labor at a dealership or repair shop.
- ✔ Peace of Mind: This unit is backed by our one-year replacement warranty.
Expert Insight: Why VIN Programming is Non-Negotiable
As a technician, I’ve seen countless DIYers buy a used TCCM from a salvage yard, only to find it doesn’t work. That’s because these modules are not interchangeable. Each TCCM is programmed with specific information about the vehicle it came from—like tire size, axle ratio, and transfer case type (RPO code). Installing a module with the wrong programming will, at best, not work, and at worst, cause damage to your transfer case. Our service of pre-programming the module to your VIN isn’t just a convenience; it’s the critical step that makes this a successful and reliable repair.
Frequently Asked Questions
Do I need to do any programming or flashing myself?
Absolutely not. The main benefit of our service is that we handle all the programming before we ship the part. Once you provide us with your VIN, we flash the module with the correct software for your specific vehicle. It will be ready for installation right out of the box.
Where is the TCCM located on my truck?
On most of the compatible GM trucks and SUVs (Tahoe, Silverado, Sierra, etc.), the Transfer Case Control Module is located under the driver’s side of the dashboard, to the left of the steering column. It’s a small black box with a few electrical connectors.
How do I send you my VIN?
After you complete your purchase, you will receive instructions on how to send us your vehicle’s 17-digit VIN. We cannot ship your order until we receive and validate this information, as it’s essential for the programming process.
Will this definitely fix my “Service 4WD” light?
While a faulty TCCM is the most frequent cause of this warning light and the associated symptoms, other parts like the encoder motor or dash switch can also be at fault. However, if your vehicle has stored TCCM-related diagnostic codes, this module is the highly probable solution.
Is this part compatible with my old part number 24252878?
Yes. This module is a direct, cross-compatible replacement for a long list of original GM part numbers, including 24252878, 24261367, 12588096, 24239190, 24240487, 24241143, 24241970, 24242480, 24243084, 24243085, and 24249095.