Stop Guessing and Start Driving: The Pre-Programmed 4WD Solution is Here
Is that dreaded “Service 4WD” light glaring at you from the dashboard? Are you struggling with a four-wheel-drive system that refuses to engage, disengage, or makes you cringe with grinding noises? You rely on your GM truck or SUV for its rugged capability, and a faulty Transfer Case Control Module (TCCM) can leave you without the traction you need when it matters most. This isn’t just an inconvenience; it’s a compromise on your vehicle’s core promise of dependability. Put an end to the frustration with a solution designed for a perfect, first-time fix.
Common Symptoms & Your Direct-Fit Solution
If your vehicle is experiencing any of the following issues, a failing TCCM is the most likely culprit. This module is the definitive solution for:
- An illuminated “Service 4WD” or “Service Four Wheel Drive” warning light
- Inability to switch between 2WD, 4HI, and 4LO modes
- The 4WD selector switch lights not illuminating or flashing incorrectly
- Getting stuck in a specific 4WD mode
- Unusual grinding or binding noises when attempting to shift the transfer case
- Diagnostic Trouble Codes (DTCs) such as C0327, C0306, C0374, or C0569
This isn’t just a replacement part; it’s a complete, ready-to-install remedy. We take a genuine GM module and flash it with the very latest official software, specifically programmed to your truckโs unique Vehicle Identification Number (VIN). This critical step ensures the Programmed GM Transfer Case Control Module communicates flawlessly with your vehicleโs other computers, restoring the intelligent 4×4 performance you’ve been missing.
Features That Deliver Real-World Benefits
- โ VIN-Programmed for Your Specific Vehicle: Enjoy a true plug-and-play installation. This crucial programming step ensures perfect compatibility with your truck’s specific options (axle ratio, tire size, transfer case type), eliminating the need for an expensive trip to the dealership for calibration.
- โ Loaded with the Latest GM Software: Your module arrives with all the most recent factory updates, often resolving underlying performance issues and providing smoother, more reliable operation than your original unit ever did.
- โ Direct Replacement for Multiple Part Numbers: This single unit is a verified replacement for a wide range of original part numbers, including 24240487, 24261367, 12588096, and more, simplifying your search and guaranteeing a perfect fit.
- โ Restores Full 4WD Functionality: Regain confident, on-demand control over your entire 4×4 system. Whether you’re navigating a snowy highway, a muddy job site, or a rocky trail, your truck will be ready.
- โ Eliminates Diagnostic Guesswork: By providing a known-good, correctly configured module, you can confidently rule out the TCCM as the source of your 4WD problems and get your vehicle fixed faster.
- โ This unit is backed by our one-year replacement warranty. Drive with peace of mind knowing your purchase is protected against defects.
Expert Insight: Why VIN Programming is Non-Negotiable
As a technician, I’ve seen countless vehicle owners waste time and money on used or non-programmed TCCMs. A module from another truck, even if it’s the same year and model, simply will not work. The TCCM is the brain of the 4WD system and must be calibrated to your vehicle’s specific powertrain and transfer case RPO code (e.g., NQH, NQF). Without this VIN-specific data, the module cannot correctly interpret signals or command the transfer case motor. Our programming service for this Programmed GM Transfer Case Control Module isn’t an add-on; it’s the essential step that makes this part the correct and only long-term solution.
Don’t settle for a partially functional vehicle. Restore its full capability and the confidence that comes with it. By ordering our Programmed GM Transfer Case Control Module, you’re not just buying a partโyou’re buying the assurance that your truck or SUV will be ready for any challenge. Simply provide your VIN during checkout, and we’ll handle the rest.
Frequently Asked Questions
Do I need to take this to a dealer for programming after I receive it?
Absolutely not. The main benefit of our service is that we program the module to your specific VIN before we ship it. This makes the installation a simple, plug-and-play process, saving you the time, cost, and hassle of a dealership visit.
How do I provide you with my vehicle’s VIN?
You can add your 17-digit VIN in the notes section during the checkout process. If you forget, don’t worryโwe will contact you via email after your purchase to request the VIN before we program and ship your module.
Will this fix my “Service 4WD” light?
In the vast majority of cases, a faulty TCCM is the root cause of the “Service 4WD” light on these GM models. If the module is indeed the problem, this part will resolve the warning light and restore full system functionality.
Is this module difficult to install?
For most individuals with basic mechanical skills, this is a very straightforward installation. The TCCM is typically located under the driver’s side of the dashboard, to the left of the steering column. It’s held in by a few bolts or clips and has electrical connectors. No special tools are required.
What happens if I install a module that hasn’t been programmed?
A non-programmed or incorrectly programmed TCCM will not function. Your 4WD system will remain inoperative, the selector switch lights may not work correctly, and the “Service 4WD” light will likely stay on. VIN programming is essential for the part to work.
How can I confirm this is the right part for my truck?
Please review the detailed fitment list on this page. This module replaces a wide range of original part numbers, including 24240487. The most certain way to guarantee a perfect fix is by providing us with your VIN, as we will ensure the module is programmed correctly for your exact vehicle build.