Restore Full 4×4 Control to Your Heavy-Duty Truck
As a technician with over two decades of experience, I know how critical a fully functional four-wheel-drive system is on a 2007-2014 GMC Sierra 3500. Whether you’re hauling a heavy load on a job site or navigating slick roads, you depend on that system to engage without fail. When the ‘Service 4WD’ light appears on your dash, it’s more than an annoyance—it’s a loss of capability and peace of mind. The Transfer Case Control Module (TCCM) is the electronic brain behind your 4×4 system, and when it fails, it can leave you stuck in two-wheel drive.
This TCCM is the definitive solution for these issues. It’s not just a replacement part; it’s a fully prepared component, programmed with the latest GM software updates specifically for your truck’s Vehicle Identification Number (VIN). This means you get a part that communicates flawlessly with your vehicle’s other systems right out of the box, eliminating the need for an expensive and time-consuming trip to the dealership for programming. This is the same process we use in the shop to ensure a reliable, long-lasting repair.
From the Diagnostic Bay
I remember a customer with a 2011 Sierra 3500 work truck. His 4WD would work intermittently. Sometimes the switch would do nothing; other times it would engage but then throw a ‘Service 4WD’ light an hour later. He’d already replaced the encoder motor on the transfer case, but the problem persisted. After connecting my scan tool, I found communication fault codes pointing to the TCCM. The internal circuitry was failing under certain conditions. We installed one of these pre-programmed modules, and in under 30 minutes, his truck’s 4×4 system was operating perfectly again. It’s a common failure point, and this direct-fit, pre-programmed module is the most efficient fix.
Is Your Truck Showing These Symptoms?
- ✔ ‘Service 4WD’ or ‘Service Four Wheel Drive’ message on the instrument cluster.
- ✔ Inability to shift between 2HI, 4HI, and 4LO.
- ✔ 4×4 indicator lights on the switch are blinking or not illuminating at all.
- ✔ The truck is stuck in one drive mode (e.g., 4HI) and will not disengage.
- ✔ Diagnostic Trouble Codes (DTCs) stored, such as C0327, C0398, or U-codes like U0102 indicating loss of communication with the TCCM.
A Straightforward Guide to Installation
This is a repair many DIY enthusiasts can handle with basic tools. The 2007-2014 Sierra 3500 TCCM is located in a relatively accessible spot, making for a quick swap.
- Safety First: Always disconnect the negative terminal from your truck’s battery before working on electronic components.
- Locate the Module: The TCCM is typically found on the driver’s side of the dashboard, mounted to a metal bracket up and to the left of the steering column. You may need to remove the lower dash 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 the module from its bracket.
- Install the New Module: Mount your new, pre-programmed TCCM onto the bracket and securely plug in all electrical connectors until they click.
- Final Steps: Reinstall any trim panels you removed and reconnect the negative battery terminal. Start the truck and test the 4WD selector switch to confirm proper operation.
Verified Vehicle Compatibility
This module is a direct-fit replacement for a wide range of GM trucks and SUVs. Please verify your vehicle is on the list below. This part is compatible with multiple part numbers, including: 24261367, 12588096, 24239190, 24240487, 24241143, 24241970, 24242480, 24243084, 24243085, 24249095, and 24252878.
- GMC Sierra 3500 Pickup: 2007 (New Body Style), 2008, 2009, 2010, 2011, 2012, 2013, 2014
- Chevrolet Silverado 3500 Pickup: 2007 (New Body Style), 2008-2014
- GMC Sierra 2500 & Silverado 2500 Pickup: 2007 (New Body Style), 2008-2014
- GMC Sierra 1500 & Silverado 1500 Pickup: 2007 (New Body Style), 2008-2013
- GMC Sierra Denali, Denali 2500/3500: 2007-2014
- Chevrolet Avalanche 1500: 2008-2013
- Chevrolet Suburban 1500/2500: 2008-2014
- Chevrolet Tahoe: 2008-2014
- GMC Yukon & Yukon XL 1500/2500: 2007-2014
Frequently Asked Questions
Do I need to get this module programmed by a dealer?
No. We program the module to your vehicle’s specific VIN before shipping it to you. It arrives ready for installation, saving you time and money.
How do I provide my VIN?
After you complete your purchase, simply send us a message with your 17-digit VIN. We cannot ship the part until we receive this information.
What is a TCCM?
TCCM stands for Transfer Case Control Module. It’s a small computer that reads input from the 4WD selector switch and sends commands to the transfer case motor to engage or disengage the four-wheel-drive system.
Where is the TCCM located on a 2012 Sierra 3500?
On most 2007-2014 GM trucks like the Sierra 3500, the TCCM is located behind the dashboard on the driver’s side, typically to the left of the steering column.
Is this part difficult to install myself?
For most people with basic mechanical skills, this is a straightforward installation that takes less than an hour. It involves removing a lower dash panel and swapping the module. Please see our installation guide above.