Restore Full Control of Your Truck’s 4×4 System
As a technician with over two decades of experience, I’ve seen countless GM trucks roll into the bay with the frustrating ‘Service 4WD’ light illuminated on the dash. In a vast majority of cases, the culprit isn’t a catastrophic failure in the transfer case itself, but rather a fault in its electronic brain: the Transfer Case Control Module (TCCM). This module is the central command for your four-wheel-drive system, and when it fails, you can be left unable to shift, or worse, stuck in the wrong mode. This isn’t just an inconvenience; it’s a reliability issue, especially when you depend on your truck for work or navigating harsh weather.
This replacement TCCM, part number 24249095, is the definitive solution. We take the guesswork and dealer hassle out of the equation. Before this module ships, we program it with the latest official GM software, flashed specifically to your truck’s Vehicle Identification Number (VIN). This ensures seamless communication with your vehicle’s other computers and guarantees it functions exactly as the factory intended. You get a reliable, plug-and-play part that restores your truck’s capability without the expensive trip to the dealership for programming.
A Technician’s Notebook: The Case of the Stuck Sierra
I remember a 2011 Sierra 1500 that came in on a flatbed. The owner had been off-road and the truck was stuck in 4-LO, making it nearly undrivable on pavement. His dash was lit up with warnings, and he was convinced he needed a new transfer case—a multi-thousand-dollar repair. After plugging in my scan tool, I saw a classic code: U0102 – Lost Communication with Transfer Case Control Module. Instead of jumping to the worst-case scenario, we started with the most likely culprit. We installed one of our pre-programmed TCCMs, and within 15 minutes, the truck was shifting perfectly through all ranges. The customer saved a fortune and drove away with his confidence restored. It’s a perfect example of how the right part, properly programmed, can be a simple fix for a major headache.
Is Your Truck 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 2007-2013 Sierra 1500 TCCM issues:
- ✔ ‘Service 4WD’ or ‘Service Four Wheel Drive’ message on the instrument cluster.
- ✔ Inability to switch between 2WD, 4HI, or 4LO.
- ✔ The 4WD selector switch lights are off or flash without engaging.
- ✔ The truck is stuck in a single drive mode (e.g., 4HI or 4LO).
- ✔ Diagnostic Trouble Codes (DTCs) stored in the system, such as U0102, C0306, C0321, C0327, or C0374.
A Straightforward Guide to Installation
One of the best parts about this solution is its simplicity. For most DIYers with basic tools, this is a job you can complete in under 30 minutes right in your driveway.
- Safety First: Always disconnect the negative terminal from your truck’s battery to prevent any electrical shorts.
- Locate the Module: On most compatible GM trucks and SUVs, the TCCM is located behind the lower dashboard panel on the driver’s side (LH dash), near the steering column. You may need to remove a plastic trim panel for access.
- Disconnect and Remove: Carefully unplug the electrical connectors from the old module. They have locking tabs that need to be depressed. Once disconnected, unbolt or unclip the old TCCM from its mounting bracket.
- Install the New Module: Mount your new, pre-programmed TCCM in the same location. Securely plug in the electrical connectors—you should hear a click as they lock into place.
- Final Steps: Reinstall any trim panels you removed and 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 is a direct replacement for a wide range of GM trucks and SUVs. Please verify your vehicle is on this list. This module is a direct replacement for part numbers: 24261367, 12588096, 24239190, 24240487, 24241143, 24241970, 24242480, 24243084, 24243085, 24249095, and 24252878.
- Avalanche 1500: 2008-2013
- Sierra 1500 Pickup: 2007 (New Body Style, Opt NQH), 2008-2013
- Sierra 2500/3500 Pickup: 2007 (New Body Style), 2008-2014
- Sierra Denali (1500/2500/3500): 2007-2014
- Silverado 1500 Pickup: 2007 (New Body Style, Opt NQH), 2008-2013
- Silverado 2500/3500 Pickup: 2007 (New Body Style), 2008-2014
- Suburban 1500/2500: 2008-2014
- Tahoe: 2008-2014
- Yukon / Yukon XL 1500/2500: 2007-2014
After your purchase, simply send us a message with your 17-digit VIN. Our technicians will handle the programming, ensuring your new 2007-2013 Sierra 1500 TCCM is ready for installation the moment it arrives.
Frequently Asked Questions
Do I need to take this module to a dealer for programming?
No. This TCCM comes fully programmed to your vehicle’s specific VIN before we ship it. It is a true plug-and-play solution that saves you time and money.
What information do you need from me?
After you complete your purchase, you must provide us with your truck’s 17-digit Vehicle Identification Number (VIN). We cannot program and ship the module without it.
Where is the TCCM located on my 2010 Sierra 1500?
The Transfer Case Control Module is typically mounted behind the dashboard on the driver’s side (LH dash), often near the diagnostic port or steering column.
Will this fix my ‘Service 4WD’ light?
A faulty TCCM is the most common cause for this warning light on these GM trucks. While this module resolves the issue in the vast majority of cases, you should confirm the TCCM is the root cause through proper vehicle diagnostics.
Is this part compatible with part number 24252878?
Yes, this module is a fully compatible and interchangeable replacement for a range of part numbers, including 24252878, 24249095, 24261367, and several others listed in the description.