Restore Your 4×4 System with a Reliable, Pre-Programmed TCCM
As a technician with over two decades of experience under the hood of GM trucks, I’ve seen it all. That dreaded “Service 4WD” light on the dash of your 2007-2014 Yukon XL 1500 is more than an annoyance—it’s a sign that the brain of your four-wheel-drive system has failed. The Transfer Case Control Module (TCCM) is responsible for every shift from 2WD to 4HI and 4LO. When it goes bad, you’re left without the traction and control you depend on, whether you’re navigating a snowy road or a muddy trail.
This isn’t just a replacement part; it’s a complete solution. We take a genuine GM-spec TCCM, part number 24252878, and professionally program it with the latest vehicle-specific software from General Motors. All we need is your vehicle’s VIN. This critical step ensures that when the module arrives at your door, it’s a true plug-and-play fix. You get to skip the expensive trip to the dealership for programming, saving you both time and hundreds of dollars in labor fees.
From the Diagnostic Bay
I remember a 2011 Sierra 2500 that came into my shop. The owner was frustrated because his 4WD would only work intermittently. He’d already replaced the dash switch and the transfer case encoder motor, but the problem persisted. The codes were intermittent communication faults—the kind that drive mechanics crazy. After checking the wiring harness for the third time, we focused on the TCCM. On the surface, it looked fine. But we knew that these modules can suffer from internal logic failures or cold solder joints that only act up under specific conditions. We installed one of our pre-programmed modules, and the problem vanished instantly. The updated software on our module provided more stable communication protocols, permanently fixing a problem the original part was prone to.
Is Your Yukon Showing These Symptoms?
A failing TCCM can manifest in several ways. If you’re experiencing any of the following, this module is the most likely solution for your 2007-2014 Yukon XL TCCM issues:
- ✔ “Service 4WD” or “Service Four Wheel Drive” message displayed on the Driver Information Center (DIC).
- ✔ Inability to switch between 2WD, 4HI, Auto 4WD, or 4LO.
- ✔ 4×4 selector switch lights are flashing or do not illuminate at all.
- ✔ The vehicle is stuck in one mode (e.g., stuck in 4WD or will not engage 4WD).
- ✔ Diagnostic Trouble Codes (DTCs) stored in the system, such as C0306, C0321, C0327, or U-series codes like U0102 indicating a loss of communication with the TCCM.
A Straightforward Guide to Installation
Replacing the TCCM on your Yukon XL is a job most DIYers can handle in under 30 minutes with basic tools. Because this module comes pre-programmed to your VIN, no further steps are needed after installation.
- Safety First: Always disconnect the negative terminal from your vehicle’s battery to prevent any electrical shorts.
- Locate the Module: On most 2007-2014 GM trucks and SUVs, the TCCM is located on the driver’s side, up under the dashboard to the left of the steering column. It’s a small black box with several electrical connectors.
- Remove the Old Module: Carefully unplug the electrical connectors. They have locking tabs that need to be depressed. Then, unbolt the module from its mounting bracket.
- Install the New Module: Bolt your new, pre-programmed TCCM into place. Securely plug in all the electrical connectors, ensuring they click and lock into position.
- Final Steps: Reconnect the negative battery terminal. Start the vehicle and test the 4WD selector switch to confirm all modes engage correctly. The “Service 4WD” light should now be off.
Verified Vehicle Compatibility
This module is a direct replacement for multiple part numbers and fits a wide range of GM vehicles. Please confirm your model and year below. This part is a guaranteed fit for a 2007-2014 Yukon XL TCCM and the following models:
- Compatible Part Numbers: 24261367, 12588096, 24239190, 24240487, 24241143, 24241970, 24242480, 24243084, 24243085, 24249095, 24252878
- Avalanche 1500: 2008-2013
- Sierra 1500/2500/3500: 2007 (New Body Style), 2008-2014
- Sierra Denali / Denali 2500 / Denali 3500: 2007-2014
- Silverado 1500/2500/3500: 2007 (New Body Style), 2008-2014
- Suburban 1500/2500: 2008-2014
- Tahoe: 2008-2014
- Yukon / Yukon Denali: 2007-2014
- Yukon XL 1500 / XL 2500: 2007-2014
Frequently Asked Questions
Do I need to take this module to a dealer for programming?
No. This is the biggest benefit we offer. We program the module to your vehicle’s specific VIN before shipping it to you. This makes the installation a simple plug-and-play process, saving you from a costly dealership visit.
How do I provide my VIN number?
After you complete your purchase, you will need to send us a message with your 17-digit Vehicle Identification Number (VIN). We cannot ship your order until we receive this information for programming.
Where is the TCCM located on my Yukon XL?
The Transfer Case Control Module is typically found under the driver’s side dashboard, to the left of the steering column. It is a small black box mounted to the vehicle’s body or a bracket.
What happens if I don’t fix a faulty TCCM?
You will be unable to use your four-wheel-drive system, which can be a significant safety issue in poor weather or off-road conditions. The vehicle may also get stuck in 4WD, leading to increased tire wear and lower fuel economy on dry pavement.
Is this part compatible with other part numbers?
Yes. This module, 24252878, is a direct replacement for a long list of original GM part numbers, including 24261367, 12588096, 24241970, and others listed in the compatibility section above.