Restore Your 4×4 Capability with a Plug-and-Play Solution
Is the dreaded “Service 4WD” light glaring at you from the dash of your Sierra, Silverado, or Tahoe? Are you unable to switch between drive modes, leaving you stuck in 2WD when you need traction the most? A failing Transfer Case Control Module (TCCM) is often the culprit, but the solution doesn’t have to involve an expensive trip to the dealership. This is your direct-fit, professionally programmed transfer case control module, designed to get your truck or SUV back to full operational strength with minimal downtime.
Common Symptoms & Your Direct-Fit Solution
A faulty TCCM can cause a range of frustrating issues that compromise your vehicle’s performance and safety. If you’re experiencing any of the following, this module is the definitive fix:
- “Service 4WD” Light: The most common indicator of a TCCM problem.
- Inability to Shift: The electronic selector switch won’t respond, or the system is stuck in one mode (e.g., 2HI, 4HI, or 4LO).
- Diagnostic Trouble Codes (DTCs): Your mechanic may pull codes such as C0306, C0321, C0327, or C0398, all pointing to a failure within the transfer case control circuit.
- No Communication: A scan tool may be unable to communicate with the module, indicating a complete internal failure.
Our solution is simple: we provide a high-quality replacement TCCM that is pre-flashed specifically for your vehicle. By providing us with your VIN at checkout, you receive a unit loaded with the latest GM software updates, ensuring seamless communication and perfect compatibility right out of the box. This eliminates the need for dealer-only programming tools, saving you significant time and money.
Features & Benefits
- ✔ VIN-Programmed for Your Vehicle: We flash the module with the newest GM software matched directly to your truck’s VIN. This ensures 100% compatibility and function without any additional programming.
- ✔ True Plug-and-Play Installation: Simply disconnect the old module and plug this one in. No special tools or dealer visits required for programming.
- ✔ Restores Full 4WD Functionality: Regain complete control over your 2WD, 4HI, 4LO, and Auto 4WD settings, just like the day your truck left the factory.
- ✔ Broad Compatibility: This single module is a direct replacement for a wide range of original part numbers, including 24261367, 12588096, 24249095, and more, covering dozens of GM models.
- ✔ Peace of Mind Guarantee: This unit is backed by our one-year replacement warranty.
An Expert’s Take: Don’t Get Caught Unprepared
As a technician, I’ve seen it countless times: a driver heads for the mountains or prepares for a winter storm, only to find their 4WD has failed them. The issue is almost always electronic, and the TCCM is the brain of the system. The real headache used to be that replacing it meant a mandatory, costly trip to the dealer for programming. This programmed transfer case control module changes the game. It delivers a dealer-level fix directly to your door, allowing a confident DIY-er or any independent shop to complete the repair in under an hour. It’s about more than just fixing a light on the dash; it’s about restoring the confidence and capability you depend on from your GM truck.
Frequently Asked Questions
How do I provide my VIN for programming?
After you complete your purchase, you will need to send us a message with your 17-digit Vehicle Identification Number (VIN). We cannot ship your order until we receive your VIN, as the programming is a critical part of the process.
Is this a true plug-and-play installation?
Yes. Because we pre-program the module to your specific VIN, it arrives ready to be installed. In most cases, you simply locate the old module (typically under the driver’s side dash), unplug it, and plug the new one in. No further programming is required.
How do I know if my TCCM is the problem?
The most common signs are a “Service 4WD” light on your instrument cluster and the inability to shift into or out of four-wheel drive. A professional diagnosis with a scan tool can confirm the failure by checking for communication with the module and specific trouble codes.
Will this fix a C0327 code?
Yes, the C0327 (Encoder Circuit Malfunction) code is frequently caused by a faulty TCCM or the transfer case encoder motor. If the encoder motor has been tested and is known to be good, this programmed transfer case control module is the next logical and most common solution.
Which part numbers does this module replace?
This module is a direct replacement for a wide range of part numbers, including 24261367, 12588096, 24239190, 24240487, 24241143, 24241970, 24242480, 24243084, 24243085, 24249095, and 24252878.
What kind of warranty is included?
This unit is backed by our one-year replacement warranty, giving you confidence in your repair.