Get Your 4×4 System Back in Action—No Dealer Required
Is the dreaded “Service 4WD” light glaring at you from the dash of your Sierra? Are you stuck in two-wheel drive, unable to shift into 4HI or 4LO when you need it most? You’ve likely pinpointed the problem: a failed Transfer Case Control Module (TCCM). For years, this was a repair that ended with a frustrating and expensive trip to the dealership for programming. Not anymore. This replacement TCCM is the definitive solution for your 2007-2013 Sierra 1500 TCCM issues, arriving at your doorstep fully programmed and ready for a straightforward installation.
As a technician with over two decades of experience, I’ve seen countless GM trucks sidelined by this exact component failure. The internal electronics are sensitive to voltage spikes and heat cycles, eventually leading to communication breakdowns. We take the guesswork and hassle out of the repair. Simply provide us with your vehicle’s VIN during checkout, and our experts will flash this module with the latest, most stable software from General Motors, ensuring it communicates flawlessly with your truck’s powertrain and body control systems from the moment you plug it in.
A Technician’s Notebook: The Intermittent 4WD Ghost
A customer brought in his ’11 Sierra 1500, complaining that his four-wheel drive would work one day and not the next. The 4WD switch lights would flash, then go out, leaving him stuck in 2WD. He’d already replaced the encoder motor, but the problem persisted. After hooking up my scan tool, I saw a U0102 code—Lost Communication with Transfer Case Control Module. Instead of a constant failure, the TCCM was dropping communication intermittently. This is a classic sign of an internal board failure. We installed one of our VIN-programmed modules, and the problem was solved instantly. It’s a 15-minute fix that solves a month-long headache.
Is Your Sierra Showing These Symptoms?
- ✔ “Service 4WD” or “Service Four Wheel Drive” message on the driver information center (DIC).
- ✔ Inability to switch between 2WD, 4HI, 4AUTO, and 4LO modes.
- ✔ The indicator lights on the 4WD selector switch do not illuminate or just flash.
- ✔ Diagnostic Trouble Codes (DTCs) stored, such as C0327, C0398, or U0102.
- ✔ A noticeable delay or grinding sound when the transfer case attempts to engage.
- ✔ 4WD system engages or disengages on its own without driver input.
A Straightforward Guide to Installation
- ✔ Safety First: Always disconnect the negative terminal from your truck’s battery before working on electrical components.
- ✔ Locate the Module: On most 2007-2013 Sierra 1500 models, the TCCM is located under the driver’s side dashboard, to the left of the steering column. You may need to remove a lower dash panel for access.
- ✔ Unplug and Unbolt: The module is held in place by a few small bolts or clips and has several electrical connectors. Carefully release the locking tabs on each connector and pull them straight out. Then, remove the mounting hardware.
- ✔ Install the New Module: Seat the new, pre-programmed TCCM in the mounting bracket and secure it. Plug in the electrical connectors, ensuring they click firmly into place.
- ✔ Reconnect and Test: Reinstall any trim panels you removed. Reconnect the negative battery terminal. Turn the ignition to the ‘On’ position (without starting the engine) and test the 4WD selector switch. You should see the indicator lights respond correctly and hear the transfer case motor actuate as you cycle through the modes.
Verified Vehicle Compatibility
This module is a direct-fit replacement for a wide range of GM trucks and SUVs, restoring full 4×4 functionality. It is compatible with part number 24252878 and serves as a replacement for numerous other part numbers, including 24261367, 12588096, 24239190, and more. Please verify your vehicle is on the list below.
- GMC Sierra 1500 Pickup: 2007 (New Body Style, Opt NQH), 2008-2013
- GMC Sierra 2500/3500 Pickup: 2007 (New Body Style) – 2014
- GMC Sierra Denali: 2007-2010
- GMC Sierra Denali 2500/3500: 2011-2014
- GMC Yukon & Yukon XL: 2007-2014
- Chevrolet Silverado 1500 Pickup: 2007 (New Body Style, Opt NQH), 2008-2013
- Chevrolet Silverado 2500/3500 Pickup: 2007 (New Body Style) – 2014
- Chevrolet Avalanche 1500: 2008-2013
- Chevrolet Suburban 1500/2500: 2008-2014
- Chevrolet Tahoe: 2008-2014
Frequently Asked Questions
What does ‘VIN-Programmed’ mean?
It means we use your truck’s unique 17-digit Vehicle Identification Number (VIN) to load the correct GM factory software and calibrations onto the module before we ship it. This makes it a true plug-and-play part, with no additional programming needed.
Do I need to send my old TCCM back?
No, there is no core charge or need to return your old, faulty module. You can recycle it locally.
Is this a new or used part?
This is a high-quality, tested replacement part that has been inspected and programmed by our technicians to ensure it meets or exceeds OEM performance standards.
Where is the TCCM located on my 2011 Sierra?
On most GMT900 platform trucks, including your 2011 Sierra, the TCCM is mounted to a bracket under the driver’s side dash, just to the left of the emergency brake pedal assembly.
Will this fix communication codes like U0102?
Yes, in the vast majority of cases, a faulty TCCM is the root cause of a U0102 (Lost Communication With Transfer Case Control Module) code. Replacing it with this pre-programmed unit is the correct fix.