Is a ‘Service 4WD’ Light on Your Dash?
There’s nothing more frustrating than seeing that warning light and realizing your truck or SUV’s four-wheel drive system might not be there for you when you need it most. Whether you’re unable to switch between 2WD and 4WD, hearing strange noises during engagement, or simply stuck in one mode, a faulty Transfer Case Control Module (TCCM) is often the culprit. Don’t let a small electronic box compromise the capability and safety of your vehicle. This is your direct, reliable solution to restore full 4×4 functionality and get back on the road with confidence.
Common Symptoms & Your Solution
If you’re experiencing any of the following issues, this module is the definitive fix you’ve been looking for. A failing TCCM can trigger diagnostic trouble codes (DTCs) such as C0327 (Encoder Circuit Malfunction) or C0398 (Encoder Circuit High Performance), leading to symptoms like:
- The “Service 4WD” message is constantly illuminated.
- Your 4×4 selector switch lights don’t respond or flash intermittently.
- Inability to shift into or out of 4-High or 4-Low.
- A noticeable delay or grinding sound when the transfer case attempts to engage.
This isn’t just a replacement part; it’s a complete, ready-to-install solution. We take a genuine GM module and professionally program it with the latest official software, specifically matched to your vehicle’s VIN. This critical step ensures seamless communication with your truck’s other systems, eliminating the need for an expensive trip to the dealership for programming. You are getting a true plug-and-play fix with this programmed Yukon XL 1500 transfer case control module.
Features & Benefits
- โ VIN-Programmed for Your Vehicle: Simply provide your VIN at checkout, and we handle the rest. The module arrives ready for installation, ensuring perfect compatibility and function right out of the box.
- โ Updated GM Software: We flash each unit with the newest software updates from General Motors, addressing known bugs and improving performance over the original factory programming.
- โ Restores Full 4×4 Functionality: Regain complete and reliable control over your vehicle’s transfer case. Switch between 2WD, 4HI, and 4LO with the confidence that it will work every time.
- โ Direct-Fit Replacement: Engineered to be a perfect replacement for a wide range of original part numbers, including 24241970, 24261367, 12588096, and more, guaranteeing a hassle-free installation.
- โ Cost-Effective Dealership Alternative: Get a fully programmed module delivered to your door, saving you significant time and money compared to purchasing and programming a new unit at a dealership.
- โ This unit is backed by our one-year replacement warranty.
From the Mechanic’s Bench: We had a customer, a contractor from Colorado, whose 2011 Silverado 2500 had its ‘Service 4WD’ light come on just as the first big snow was forecast. He depends on his truck for his livelihood and couldn’t afford downtime or a huge dealership bill. He was worried he wouldn’t be able to get to job sites. We sent him this exact programmed Yukon XL 1500 transfer case control module overnight. He installed it in his garage in under an hour. The next day, he called us from a snowy worksite, ecstatic that his 4×4 was engaging perfectly. That’s the peace of mind this part providesโrestoring not just a vehicle, but a tool people rely on every single day.
Frequently Asked Questions
What does ‘VIN Programmed’ actually mean?
It means we use your vehicle’s unique 17-digit Vehicle Identification Number (VIN) to load the exact software and calibrations your specific truck or SUV requires. This ensures the TCCM communicates correctly with your engine, transmission, and ABS modules, just as it did from the factory. This step is essential for proper 4WD operation.
Is any additional programming needed after I install it?
No. Our programming service makes this a true plug-and-play part. Once installed, the module is ready to function immediately. There is no need for a trip to the dealer or a specialized scan tool for setup.
How do I provide my VIN?
After you complete your purchase, you will need to send us a message with your vehicle’s VIN. We cannot ship your part until we receive this information, as the programming is specific to your truck.
Will this fit my vehicle if my original part number is different?
Yes, this module is a direct replacement for all the part numbers listed in the description (e.g., 24261367, 12588096, 24239190, etc.). GM often consolidates part numbers over time. As long as your vehicle is listed in the compatibility chart, this module will work perfectly.
What tools are needed for installation?
Installation is straightforward for someone with basic mechanical skills. The TCCM is typically located under the driver’s side of the dashboard. You will generally only need basic hand tools, such as a socket set, to remove the lower dash panel and unbolt the module. Always disconnect the battery before starting work on electrical components.
Don’t wait for bad weather to find out your 4WD is out of commission. Order your programmed Yukon XL 1500 transfer case control module today and restore your vehicle’s all-terrain capability.