Is your truck’s ‘Service 4WD’ light on? Are you unable to switch between 2WD and 4WD? A failing Transfer Case Control Module (TCCM) is often the culprit, leaving your capable GM truck or SUV stuck in two-wheel drive when you need its full power most. This isn’t just an inconvenience—it’s a loss of the core capability you rely on for work, family safety, and off-road confidence. We have the direct, hassle-free solution to restore your vehicle’s all-terrain dominance.
Common Symptoms & Your Direct-Fit Solution
If you’re experiencing issues like a persistent ‘Service 4WD’ message, flashing lights on your selector switch, or the complete inability to shift the transfer case, your TCCM has likely failed. This can lead to Diagnostic Trouble Codes (DTCs) such as C0327, C0306, or C0374. Our replacement module is the definitive fix. The most critical feature is that this pre-programmed 24240487 TCCM arrives at your door fully flashed with the latest GM software, matched specifically to your vehicle’s VIN. This completely eliminates the need for an expensive and time-consuming trip to the dealership for programming. It’s engineered to restore flawless communication between your selector switch and the transfer case motor, giving you back the reliable 4WD performance you expect from your GM vehicle. This is the ideal solution for both professional technicians and skilled DIYers who demand a part that works correctly right out of the box.
Features & Benefits
- ✔ VIN-Specific Programming: We flash the module to your exact VIN before shipping, ensuring perfect compatibility and function upon installation.
- ✔ Restore Full 4WD Capability: Regain complete control over your 2-High, 4-High, and 4-Low settings for any road or trail condition.
- ✔ Eliminate Annoying Warnings: Clear the ‘Service 4WD’ light and other related dashboard error messages for a clean and error-free display.
- ✔ Direct OEM-Spec Fitment: Designed to be a perfect physical replacement for the original module, using the same mounting points and electrical connectors.
- ✔ Save Time and Money: By providing a pre-programmed 24240487 TCCM, we help you avoid costly dealership programming fees and vehicle downtime.
- ✔ Peace of Mind: This unit is backed by our one-year replacement warranty.
An Expert’s Insight: As a technician with over two decades of experience, I’ve seen countless GM trucks sidelined by TCCM failure. The most common mistake owners and even some shops make is replacing the module without programming it, which leads to the exact same ‘Service 4WD’ light. The internal software is just as critical as the hardware. By flashing this module with the latest GM software matched specifically to your VIN *before* it ships, we eliminate that critical point of failure. You’re not just buying a part; you’re buying a complete, ready-to-install solution that ensures a successful repair.
Frequently Asked Questions
How do I provide my vehicle’s VIN?
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 during checkout or reply to your order confirmation email. We cannot ship your part until we receive the VIN for programming.
Is this a simple plug-and-play installation?
Yes. Because we handle all the programming, the module is ready for installation upon arrival. It is a direct physical replacement for the original part. Simply disconnect the battery, remove the old module, install the new one, and reconnect the battery. No special tools or software are required.
Will this fix my ‘Service 4WD’ light?
In the vast majority of cases, a faulty TCCM is the direct cause of the ‘Service 4WD’ message and related shifting problems. This module is designed to resolve all issues stemming from its failure. However, we always recommend confirming your diagnosis to rule out other potential issues like a faulty encoder motor or selector switch.
What if my old module has a different part number?
This module is a compatible replacement for a wide range of original part numbers, as listed in the description. GM often consolidates part numbers over time. As long as your vehicle’s year, make, and model are on our fitment list, this pre-programmed 24240487 TCCM will function correctly as the updated replacement.
Is any additional learning or programming needed after I install it?
No. All necessary programming and software updates are completed by our technicians before the unit is shipped to you. It is fully prepared for your vehicle and requires no further electronic setup.