Regain Command of Your 4WD System
Is your Sierra, Silverado, or Tahoe flashing a stubborn “Service 4WD” light? Are you unable to shift between 2WD, 4-High, or 4-Low, leaving your truck’s capability compromised? Don’t let a faulty module dictate where you can and can’t go. This Transfer Case Control Module (TCCM) is the definitive, hassle-free solution to restore full control and confidence in your vehicle’s drivetrain. We take the guesswork out of the repair by pre-programming the module to your specific vehicle using your VIN, ensuring it arrives ready for a straightforward, plug-and-play installation.
Common Symptoms & Your Solution
A failing TCCM can cause a host of frustrating issues that sideline your truck. If you’re experiencing any of the following, this module is the reliable fix you need:
- “Service 4WD” or similar warning light illuminated on the dash
- Inability to shift the transfer case into or out of 4WD
- Grinding or unusual noises during attempted shifts
- Diagnostic Trouble Codes (DTCs) such as C0306, C0327, C0374, or U-codes indicating lost communication
- Selector switch lights are inoperative or flashing
By replacing your old unit with this professionally flashed programmed transfer case control module, you’re not just swapping a part—you’re restoring the intelligent link between your commands and your truck’s all-terrain capability.
Features & Tangible Benefits
- ✔ VIN-Specific Programming: We flash the module with the latest GM software using your vehicle’s VIN. This eliminates the need for an expensive trip to the dealership for programming.
- ✔ Plug-and-Play Installation: Because it’s pre-configured for your exact truck, installation is as simple as locating the old module, swapping the connectors, and mounting the new one.
- ✔ Restored Drivetrain Function: Regain seamless and reliable shifting between all 2WD and 4WD modes, ensuring your truck is ready for any weather or terrain.
- ✔ Broad GM Compatibility: Engineered to be a direct-fit replacement for a wide range of popular GM trucks and SUVs, including Sierra, Silverado, Suburban, Tahoe, and Yukon models.
- ✔ Peace of Mind: This unit is backed by our one-year replacement warranty.
An Expert’s Insight on TCCM Failure
As a technician, I’ve seen dozens of these GMT900-platform trucks come in with 4WD issues. The TCCM is often mounted in a vulnerable spot on the frame or under the dash where moisture, corrosion, or voltage irregularities can take their toll over time. Many people are tempted to grab a used module from a salvage yard, only to discover it won’t work without being programmed by a dealer—adding cost and delay. This programmed transfer case control module is the smarter repair. It arrives with the correct, updated software already loaded, saving you time, money, and the immense frustration of a job half-done. It’s the fix that gets you back on the road correctly, the first time.
Stop wrestling with an unreliable 4WD system. This is your opportunity to install a dependable, correctly configured component that restores your truck’s performance and your confidence as a driver. After placing your order, simply provide us with your VIN, and we’ll handle the critical programming before shipping your new programmed transfer case control module directly to you.
Frequently Asked Questions
How do I provide my VIN for programming?
After you complete your purchase, please 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 difficult to install?
For most DIYers with basic tools, this is a straightforward installation. The TCCM is typically located under the driver’s side of the dashboard. It involves removing a few trim panels, disconnecting the electrical connectors from the old module, unbolting it, and then installing the new one in reverse order. Since it’s pre-programmed, no special electronic tools are needed.
Will this fix the “Service 4WD” light on my dash?
In the vast majority of cases, a faulty TCCM is the root cause of the “Service 4WD” light and associated shifting problems. Replacing it with this correctly programmed unit should resolve the issue and extinguish the warning light after installation.
What happens if my original part number isn’t on your compatible list?
The part numbers listed (24261367, 12588096, 24239190, etc.) are the most common compatible ones. GM often supersedes part numbers over time. If your vehicle make, model, and year are listed in the fitment chart, this module will be the correct replacement, even if your specific number isn’t shown.
Does this module require any additional relearn procedures after installation?
No. Because we program the module to your VIN before shipping, it is designed to be a true plug-and-play part. Once installed, it will communicate correctly with your truck’s other systems without the need for a dealer-level scan tool to perform a relearn.
