If you’re staring at that frustrating ‘Service 4WD’ light on your 2007-2014 GMC Yukon XL 1500, you’ve come to the right place. As a technician with over two decades of experience under the hood of these GM trucks, I’ve seen this issue countless times. The culprit is often a failed Transfer Case Control Module (TCCM), the electronic brain that manages your four-wheel-drive system. When it fails, you’re left without the all-terrain capability you rely on, especially in bad weather or off-road conditions.
This isn’t just a replacement part; it’s a complete, ready-to-install solution. We take a genuine OEM-quality module and flash it with the latest GM-certified software, specifically programmed to your vehicle’s VIN. This eliminates the most expensive and time-consuming part of the repair: a trip to the dealership for programming. You get a part that’s ready to go right out of the box, restoring your truck’s functionality quickly and affordably.
Common Signs of a Failing TCCM
A faulty module can cause a range of confusing symptoms. If your Yukon XL is experiencing any of the following, a bad TCCM is the likely cause:
- ✔ ‘Service 4WD’ or ‘Service Four Wheel Drive’ message on the Driver Information Center (DIC).
- ✔ The 4WD selector switch lights are flashing or completely dead.
- ✔ Inability to shift into or out of 4-Hi, 4-Lo, or 2WD.
- ✔ Audible clicking or grinding noises when attempting to engage the 4WD system.
- ✔ Diagnostic Trouble Codes (DTCs) stored in the system, such as C0306, C0321, C0327, or U0102.
A Technician’s Notebook: The Misleading Motor
A customer brought in his ’11 Sierra 1500, convinced his transfer case encoder motor was shot. The 4WD switch was dead, and he couldn’t get it out of 2WD. He’d already bought a new motor online, but the problem persisted. After a quick scan, I saw a U0102 code—Lost Communication with TCCM. The module wasn’t talking to the rest of the truck. Instead of a difficult mechanical job, the fix was this exact module. We plugged in the VIN-programmed unit, cleared the codes, and his 4WD was back in 15 minutes. He was out hundreds less than he expected and learned a valuable diagnostic lesson. Always check the module first!
A Straightforward Guide to Installation
Installing your new Yukon XL 1500 Transfer Case Module is a job most DIYers can handle in under 30 minutes with basic tools. It’s typically located under the driver’s side of the dashboard.
- Safety First: Disconnect the negative terminal from your vehicle’s battery to prevent any electrical shorts.
- Locate the Module: On most GMT900 trucks, the TCCM is mounted to a bracket to the left of the steering column, up under the dash. You may need to remove the lower dash panel for easier access.
- Disconnect and Remove: Carefully unplug the electrical connectors from the old module. They have locking tabs, so be gentle. Then, unbolt the module from its mounting bracket (usually one or two small bolts).
- Install the New Module: Bolt the new, pre-programmed TCCM into place. Reconnect the electrical harnesses, ensuring they click securely into position.
- Final Steps: Reinstall any trim panels you removed. Reconnect the negative battery terminal. Start the vehicle and test the 4WD selector switch to confirm proper operation. The ‘Service 4WD’ light should be gone.
Verified Vehicle Compatibility
This module, part number 24239190, is a direct replacement for a wide range of GM trucks and SUVs. It is compatible with the original part numbers: 24261367, 12588096, 24240487, 24241143, 24241970, 24242480, 24243084, 24243085, 24249095, and 24252878. Please confirm your vehicle is on the list below:
- GMC Yukon XL 1500: 2007-2014
- Chevrolet Avalanche 1500: 2008-2013
- Chevrolet Silverado & GMC Sierra 1500/2500/3500: 2007 (New Body Style) – 2014
- Chevrolet Suburban 1500/2500: 2008-2014
- Chevrolet Tahoe & GMC Yukon: 2007-2014
- GMC Sierra Denali / Denali 2500 / Denali 3500: 2007-2014
- GMC Yukon XL 2500: 2008-2013
Frequently Asked Questions
Do I need to do any programming after I receive this module?
No. This is the main benefit of our service. We program the module to your vehicle’s specific VIN before shipping. It arrives ready for a true plug-and-play installation.
Where do I provide my VIN?
After you complete your purchase, you will need to send us your 17-digit Vehicle Identification Number (VIN). We cannot ship the module until we have this information to perform the programming.
Will this fix the ‘Service 4WD’ light?
In the vast majority of cases, yes. The TCCM is the most common point of failure that triggers this specific warning message on these GM trucks and SUVs.
What tools do I need for installation?
You’ll typically only need a basic socket set (for the mounting bolts and battery terminal) and possibly a trim removal tool to safely pop off the lower dash panel. No special diagnostic or programming tools are required.
Is this a new or used part?
This is a high-quality, inspected replacement module that has been tested and loaded with brand new, vehicle-specific software from GM. It is guaranteed to restore your vehicle’s function.