Restore Full 4×4 Control to Your GMC Yukon XL 1500
Is the dreaded “Service 4WD” light glaring at you from the dash of your 2007-2014 Yukon XL 1500? Are you unable to switch drive modes, leaving you stuck in 2WD when you need 4-Hi for a slippery road or 4-Lo for a tough job? You’ve likely pinpointed the problem: a failed Transfer Case Control Module (TCCM). As a technician with over two decades of experience, I’ve seen this exact issue countless times in GM trucks and SUVs. The good news is that the fix is more straightforward and affordable than you think.
This isn’t just a part in a box. This is a complete, ready-to-install solution. We take a reliable replacement TCCM, part number 24243085, and flash it with the latest official GM software specifically for your vehicle. All we need is your VIN. This critical step means you can skip the expensive trip to the dealership for programming. You get a module that communicates flawlessly with your Yukon’s powertrain, restoring the reliable 4×4 performance you depend on.
Case Study: A Tricky Diagnosis
A customer brought in his ’11 Sierra with a classic “Service 4WD” light. He’d already replaced the transfer case encoder motor, a common guess, but the problem persisted. His scanner pulled a U0102 (Lost Communication with TCCM). Instead of throwing more parts at it, we checked the TCCM connections and power—all good. This pointed directly to an internal failure of the module itself. We installed a VIN-programmed TCCM like this one, and in under 20 minutes, all 4WD functions were restored and the code was gone. It’s a reminder that diagnosing correctly saves time and money, and a faulty TCCM is often the true culprit.
Common Signs of a Failing TCCM
- âś” “Service 4WD” or “Service Four Wheel Drive” message on the instrument cluster.
- âś” Inability to shift the transfer case into or out of 4-Hi, 4-Lo, or 2WD.
- âś” The 4WD selector switch lights don’t illuminate or flash without engaging.
- âś” Diagnostic Trouble Codes (DTCs) such as U0102, C0327, or C0374 are stored in the system.
- âś” The vehicle feels like it’s binding or hopping during turns, indicating it may be stuck in 4WD.
A Straightforward Guide to Installation
Replacing the 2007-2014 Yukon XL 1500 TCCM is a job most DIYers can handle in their own driveway. The module is typically located behind the lower dash panel on the driver’s side.
- Safety First: Disconnect the negative terminal from your vehicle’s battery to prevent any electrical shorts.
- Access the Module: Carefully remove the lower dash trim panel below the steering column. It’s usually held in by clips and a few screws.
- Locate the Old TCCM: Look for a small black or silver box with two or three large electrical connectors. It’s often mounted to a metal bracket.
- Disconnect and Remove: Unplug the electrical connectors by pressing their release tabs. Then, unbolt the module from its mounting bracket.
- Install the New Module: Bolt your new, pre-programmed TCCM into place. Securely plug in the electrical connectors until they click.
- Final Steps: Reinstall the lower dash panel and reconnect the negative battery terminal. Start the vehicle and test all 4WD selector switch functions to confirm the repair.
Verified Vehicle Compatibility
This module is a direct-fit replacement for a wide range of GM trucks and SUVs. It is compatible with part numbers 24261367, 12588096, 24239190, 24240487, 24241143, 24241970, 24242480, 24243084, 24243085, 24249095, and 24252878. Please confirm your vehicle is on the list below:
- 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 do any programming myself?
No. This module arrives fully programmed to your vehicle’s VIN with the latest GM software updates. It’s a true plug-and-play installation, saving you a trip to the dealer.
How do I provide my VIN number?
After you complete your purchase, you will need to send us a message with your vehicle’s 17-digit VIN. We cannot ship the module until we have this information to program it correctly.
Is this part difficult to install at home?
Not at all. For most DIYers with basic hand tools, this is a 15-30 minute job. The module is easily accessible under the driver’s side dashboard.
Will this fix my ‘Service 4WD’ light?
If the TCCM is the cause of the problem, then yes, this part will resolve the issue and turn off the light. A failed TCCM is the most common reason for this warning on these GM vehicles.
What if my original part number is different from 24243085?
This module is a direct replacement for all the part numbers listed in the description, including 24261367, 12588096, 24243084, and more. As long as your vehicle model and year are listed, this part will work.