Restore Your 4WD with a Plug-and-Play Solution
Is that frustrating “Service 4WD” light glaring at you from the dash? Are you unable to switch between 2WD and 4WD, leaving you stuck when you need traction the most? A faulty Transfer Case Control Module (TCCM) is often the culprit, but a trip to the dealership for a replacement and programming can be costly and time-consuming. This is your direct, hassle-free solution. We provide a genuine GM-spec TCCM that arrives at your door fully programmed to your vehicle’s specific VIN. Get back on the road, and in control, with confidence.
Common Symptoms & Your Direct-Fit Solution
If you’re experiencing any of the following issues, this module is the definitive fix for your GM truck or SUV:
- “Service 4WD” or “Service Four Wheel Drive” message on the dash
- 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 C0327, C0398, or U-codes related to lost communication
This programmed 24252878 TCCM is engineered to resolve these problems by restoring proper communication between your transfer case, selector switch, and the vehicle’s main computer. By providing us with your VIN at checkout, you receive a unit that is 100% ready for installation right out of the box.
Features & Tangible Benefits
- โ VIN-Specific Programming Included: We flash the module with the latest GM software calibrated specifically for your truck. This ensures perfect compatibility and function without any additional steps.
- โ Eliminates Dealer Visits: Save hundreds of dollars and the inconvenience of a dealership appointment. This part is truly plug-and-play.
- โ Restores Full 4WD Functionality: Regain reliable control over your four-wheel-drive system for safety and performance in all weather and terrain.
- โ Direct-Fit Replacement: This module replaces a wide range of original part numbers, including 24261367, 12588096, 24249095, and more, guaranteeing a perfect fit.
- โ Fast & Simple Installation: Located under the driver’s side dash, the TCCM can typically be swapped out in under 30 minutes with basic hand tools.
- โ Peace of Mind Guarantee: This unit is backed by our one-year replacement warranty.
A Note From Our Veteran Techs
“We’ve seen countless Silverado and Tahoe owners chase this ‘Service 4WD’ issue. Before you replace anything, do a quick check of the main ground wire located on the frame rail beneath the driver’s door. A corroded ground can cause identical symptoms. If that ground is clean and tight, 9 times out of 10, a faulty TCCM is your problem. This pre-programmed module is the exact fix we use in our shop because it’s reliable and gets the job done right the first time, saving our customers time and money.”
Frequently Asked Questions
Where do I provide my VIN?
After you complete your purchase, you will receive an email prompting you for your vehicle’s 17-digit VIN. You can also add it as a note during the checkout process. We cannot ship your order until we receive the VIN, as the programming is a critical step.
Is this a difficult part to install myself?
No, this is a very straightforward installation for a DIY-er with basic skills. The TCCM is typically located to the left of the steering column, under the dashboard. It’s held in by a few small bolts or clips. Simply disconnect the negative battery terminal, unplug the electrical connectors from the old module, swap it with your new programmed 24252878 TCCM, and reconnect everything. The whole process usually takes less than 30 minutes.
Will this fix my specific problem?
This module is the most common solution for the “Service 4WD” light and the inability to shift the transfer case on these GM vehicles. If your vehicle is listed in our compatibility chart and you’re experiencing these symptoms, this part has a very high probability of being the correct fix.
What if I have a different part number on my old module?
Our module is a direct replacement for all the part numbers listed in the description, including 24261367, 12588096, 24239190, and many others. GM often consolidates part numbers over time. As long as your vehicle make, model, and year are on our fitment list, this module will work perfectly.
Does this part require any additional programming after installation?
Absolutely not. The main benefit of our service is that the module arrives fully programmed and ready for installation. Once you plug it in, your vehicle will recognize it, and your 4WD system should be fully operational. There is no need for a scan tool or a trip to the dealer.