If you’re staring at that dreaded “Service 4WD” message on your dash or your truck refuses to shift into or out of four-wheel drive, you’ve come to the right place. As a technician with over two decades of experience under the hood of GM trucks, I’ve seen this issue countless times. The Transfer Case Control Module (TCCM) is the electronic brain of your 4×4 system, and when it fails, it can leave you stranded in the wrong gear at the worst possible time. This isn’t just an inconvenience; it’s a reliability issue that needs a solid fix.
We offer a dependable and straightforward solution: a replacement TCCM, part number 24242480, that arrives at your doorstep fully programmed to your vehicle’s specific VIN. Forget about expensive dealership visits, towing fees, or the hassle of finding a shop with the right GM programming tools. We handle the complex part for you. By flashing the module with the latest GM software updates before shipping, we ensure it’s a true plug-and-play component. This restores factory functionality and communication between the TCCM, the transfer case motor, and your dash switch.
A Technician’s Notebook
I remember a 2011 Silverado 2500 that came into the bay stuck in 4-LO. The owner used it for plowing and was frustrated because he couldn’t get back into 2WD for highway driving. His selector switch lights were blank. After a quick scan, I pulled code U0102 – Lost Communication with Transfer Case Control Module. Instead of a complex wiring issue, it was the classic TCCM internal failure. These modules often fail due to voltage spikes or internal circuit board corrosion over time. Replacing it with a pre-programmed unit like this one had him back on the road in under 30 minutes, saving him hundreds compared to the dealership quote.
Common Signs of a Failing TCCM
A faulty TCCM can cause a range of frustrating issues. If your truck is experiencing any of the following, this module is the most likely solution:
- ✔ “Service 4WD” or “Service Four Wheel Drive” message on the instrument cluster.
- ✔ Inability to switch between 2WD, 4-HI, or 4-LO.
- ✔ The 4WD selector switch lights are off or flash intermittently.
- ✔ The vehicle is stuck in a single 4WD mode.
- ✔ Diagnostic Trouble Codes (DTCs) are present, such as U0102, C0327, C0306, or C0374.
- ✔ Audible clicking or grinding noises from the transfer case area during attempted shifts.
A Straightforward Guide to Your 2007-2014 Silverado 2500 TCCM Installation
Replacing the TCCM is a job most DIYers can handle with basic tools. Since we program it beforehand, no further electronic work is needed.
- Safety First: Disconnect the negative terminal from your truck’s battery to prevent any electrical shorts.
- Locate the Module: On most of these GM trucks, the TCCM is located behind the lower dash panel on the driver’s side, to the left of the steering column. You may need to remove the knee bolster panel for 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.
- Install the New Module: Bolt the new, pre-programmed TCCM into place and securely reconnect the electrical connectors. You should hear a click as they lock in.
- Final Steps: Reinstall the dash panel and reconnect the negative battery terminal. Start the truck and test the 4WD selector switch to confirm proper operation. The “Service 4WD” light should be off.
Verified Vehicle Compatibility
This module is a direct-fit replacement for a wide range of GM trucks and SUVs. Please verify your model and year below. This part is compatible with 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, NQH), 2008-2013
- SIERRA 2500 PICKUP: 2007 (New Body Style, NQF), 2008-2014
- SIERRA 3500 PICKUP: 2007 (New Body Style), 2008-2014
- SILVERADO 1500 PICKUP: 2007 (New Body Style, NQH), 2008-2013
- SILVERADO 2500 PICKUP: 2007 (New Body Style, NQF), 2008-2014
- SILVERADO 3500 PICKUP: 2007 (New Body Style), 2008-2014
- SUBURBAN 1500/2500: 2008-2014 / 2008-2013
- TAHOE: 2008-2014
- YUKON / YUKON XL: 2007 (Denali), 2008-2014
Do I need to do any programming after I receive it?
Do I need to do any programming after I receive it?
No. This is the biggest benefit of our service. We program the module to your vehicle’s VIN before we ship it. It is ready for installation right out of the box, with no need for a trip to the dealer.
How 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 receive your VIN to perform the programming.
Is this a new or used part?
This is a high-quality, tested recycled OEM part that has been inspected for full functionality and then programmed with the latest GM software. This provides OEM reliability without the high dealership cost.
Will this fix the ‘Service 4WD’ light?
In the vast majority of cases, yes. A failed TCCM is the most common cause of the ‘Service 4WD’ light on these GM trucks. As long as the issue isn’t with the transfer case motor or the selector switch itself, this module is the correct fix.
What if I have a different part number on my old module?
Our module is compatible with a wide range of original part numbers, including 24261367, 12588096, and many others listed above. As long as your vehicle is on the compatibility list, this module will work as a direct replacement.