Is Your Truck’s 4WD Unreliable?
Is your Silverado, Sierra, or Tahoe flashing a ‘Service 4WD’ light, refusing to shift, or making strange noises from the transfer case? Don’t let a faulty control module sideline your capable truck. This Transfer Case Control Module (TCCM) is the definitive, hassle-free solution to restore full command over your four-wheel-drive system. It arrives at your door completely programmed to your vehicle’s specific VIN, eliminating the need for an expensive trip to the dealership for programming. Get back on the road, trail, or job site with confidence.
Common Symptoms & Your Direct-Fit Solution
A failing TCCM can cause a host of frustrating issues. If you’re experiencing any of the following, this module is the solution you need:
- “Service 4WD” Light: The most common indicator of a TCCM problem.
- Inability to Shift: Your truck is stuck in 2WD, 4HI, or 4LO and the selector switch does nothing.
- Flashing Selector Lights: The lights on your 4WD switch blink but never engage the selected mode.
- Diagnostic Trouble Codes (DTCs): Often triggers codes like C0306, C0327, C0374, or various U-codes indicating a loss of communication with the module.
This programmed 24242480 TCCM is engineered to resolve these problems by providing a reliable, pre-configured replacement that communicates flawlessly with your truck’s powertrain and chassis systems.
Features & Real-World Benefits
- ✔ VIN-Specific Programming Included: We flash the module with the latest GM software using your truck’s VIN before it ships. This means no extra costs or appointments at the dealership.
- ✔ Truly Plug-and-Play Installation: Simply disconnect the old module and plug this one in. It’s a straightforward repair you can do in your own garage with basic hand tools.
- ✔ Restores Full 4WD Functionality: Regain complete control to shift between 2WD, 4HI, and 4LO on command, just like the day your truck left the factory.
- ✔ Extensive Compatibility: This single unit correctly replaces a wide range of original part numbers, including 24261367, 12588096, 24239190, 24240487, and many more, ensuring a perfect match.
- ✔ This unit is backed by our one-year replacement warranty.
A Technician’s Perspective
For over two decades, I’ve diagnosed countless GM trucks with these exact 4WD complaints. In the past, the fix always involved a new module and a mandatory, costly programming session with dealer-specific tools. This pre-programmed module is a game-changer for truck owners. It puts a professional-grade repair directly into your hands, saving you significant time and money. It’s the smart, efficient way to get your truck’s essential 4×4 system back in perfect working order.
Don’t wait for bad weather or a tough job to find out your 4WD won’t engage. Restore your truck’s capability and your peace of mind with this ready-to-install programmed 24242480 TCCM.
Frequently Asked Questions
Do I need to take this part to a dealer after installation?
Absolutely not. The main benefit of this module is that we program it to your vehicle’s VIN before shipping. It is a true plug-and-play part, requiring no further calibration or programming.
How do I provide my VIN number?
After you complete your purchase, you will need to send us your 17-digit Vehicle Identification Number (VIN). You can typically add it as a note to your order or reply to your order confirmation email. We cannot ship the part until we have your VIN.
Will this fix my ‘Service 4WD’ light?
In the vast majority of cases where the TCCM is faulty, yes. This module is the direct solution for issues originating from the transfer case controller. However, you should always ensure other parts of the 4WD system, like the encoder motor and selector switch, are functioning correctly.
My old part has a different number on it. Will this still work?
Yes. This module is a direct replacement for a long list of original GM part numbers, including 24261367, 12588096, 24239190, 24240487, 24241143, 24241970, 24243084, 24243085, 24249095, and 24252878. If your part number is on this list, this module is the correct fit.
Where is the TCCM located on my truck?
On most compatible GM trucks and SUVs from this era, the Transfer Case Control Module is located behind the dashboard on the driver’s side, to the left of the steering column. It’s typically accessible after removing the lower dash panel.