Restore Your Truck’s 4×4 Capability Instantly
There’s nothing more frustrating than seeing the ‘Service 4WD’ light pop up on your 2011-2014 Sierra Denali 2500’s dash, especially when you need that four-wheel drive for a tough job or bad weather. That light often points directly to a failing Transfer Case Control Module (TCCM)—the electronic brain of your 4×4 system. When it fails, you’re left with a truck that can’t switch modes, or worse, is stuck in a mode you don’t want. This isn’t just an inconvenience; it’s a loss of the core capability you paid for.
This isn’t just a replacement part; it’s a complete, ready-to-install solution. We take a genuine OEM TCCM, part number 24240487, and program it with the very latest GM-certified software specifically for your truck’s Vehicle Identification Number (VIN). This means you get a module that communicates flawlessly with your vehicle’s other computers, restoring full function without a costly and time-consuming trip to the dealership for programming. It’s the definitive fix for a wide range of 4×4 electronic issues.
From the Diagnostic Bay: Solving the “Service 4WD” Mystery
I’ve seen hundreds of GM trucks roll into my shop over the years with that dreaded ‘Service 4WD’ light glowing. A common case was a 2012 Sierra 2500HD whose owner couldn’t get it out of 2WD. The selector switch lights would just blink. A quick scan with a professional tool revealed code U0102 – ‘Lost Communication with Transfer Case Control Module.’ In these trucks, the TCCM is mounted behind the driver’s side lower dash panel. It’s a spot that can, over time, be susceptible to moisture intrusion or simple electronic fatigue from countless heat cycles. Often, the internal circuit board develops micro-fractures, severing communication. Replacing the module is the only reliable fix, and providing a pre-programmed unit like this one means the repair is a simple swap, not a multi-step process involving dealership appointments.
Is Your Truck Showing These Symptoms?
A faulty TCCM can manifest in several ways. If you’re experiencing any of the following, this module is the likely solution for your 2011-2014 Sierra Denali 2500 TCCM problems:
- ✔ ‘Service 4WD’ or ‘Service Four Wheel Drive’ message on the Driver Information Center (DIC).
- ✔ Inability to shift between 2HI, 4HI, Auto, or 4LO.
- ✔ 4×4 selector switch lights blink but never go solid.
- ✔ Vehicle is stuck in 4WD or, in some cases, transfer case neutral.
- ✔ Diagnostic Trouble Codes (DTCs) stored, such as U0102, C0327, or other communication-related faults.
- ✔ Audible clicking or grinding from the transfer case area during failed shift attempts.
A Straightforward Guide to Installation
One of the biggest benefits of this module is the simple, do-it-yourself installation. No special programming tools are required. Get your 4×4 system back online in under an hour.
- Safety First: 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 dash panel to the left of 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 TCCM. Then, unbolt or unclip the module from its mounting bracket.
- Install the New Module: Mount your new, pre-programmed TCCM in the same location. Securely plug in all electrical connectors—they are keyed and will only fit one way.
- Final Steps: Reinstall any trim panels you removed. Reconnect the negative battery terminal. Start the vehicle and test the 4WD selector switch to confirm proper operation. The ‘Service 4WD’ light should now be off.
Verified Vehicle Compatibility
This module is a direct replacement for a wide range of GM vehicles and is compatible with numerous part numbers, ensuring a perfect fit and function. Please confirm your vehicle is on this list. This part is the solution for your 2011-2014 Sierra Denali 2500 TCCM needs and many others.
Compatible Part Numbers: 24261367, 12588096, 24239190, 24240487, 24241143, 24241970, 24242480, 24243084, 24243085, 24249095, 24252878
- AVALANCHE 1500: 2008-2013
- SIERRA 1500 PICKUP: 2007 (New Body Style, Opt NQH), 2008-2013
- SIERRA 2500 PICKUP: 2007 (New Body Style, Opt NQF), 2008-2014
- SIERRA 3500 PICKUP: 2007 (New Body Style), 2008-2014
- SIERRA DENALI: 2007-2010
- SIERRA DENALI 2500: 2011-2014
- SIERRA DENALI 3500: 2011-2014
- SILVERADO 1500 PICKUP: 2007 (New Body Style, Opt NQH), 2008-2013
- SILVERADO 2500 PICKUP: 2007 (New Body Style, Opt NQF), 2008-2014
- SILVERADO 3500 PICKUP: 2007 (New Body Style), 2008-2014
- SUBURBAN 1500: 2008-2014
- SUBURBAN 2500: 2008-2013
- TAHOE: 2008-2014
- YUKON & YUKON XL 1500: 2007 (Denali), 2008-2014
- YUKON XL 2500: 2008-2013
Frequently Asked Questions
Why do I need to provide my VIN?
Your VIN is essential because it allows us to load the exact, correct software calibration from GM for your truck’s specific options and configuration. This ensures seamless communication and perfect operation right out of the box, eliminating the need for dealer programming.
Is this a difficult part to install myself?
Not at all. For most DIYers with basic hand tools, this is a straightforward job that takes less than an hour. The module is typically located behind the driver’s side lower dash and involves removing a trim panel, unplugging the old module, and plugging in the new one.
Will this fix my ‘Service 4WD’ light?
In the vast majority of cases where the TCCM is the root cause, yes. This module is the most common failure point for the ‘Service 4WD’ message and related communication error codes (like U0102). It’s the definitive solution for a faulty module.
What happens after I place my order?
After you purchase, you will need to send us your 17-digit VIN. We cannot ship the module until we receive it. Once we have your VIN, we will program the module within one business day and ship it to you.
Is this part new or used?
This is a high-quality, inspected, and tested genuine OEM part that has been professionally programmed with the latest software for your vehicle. It is guaranteed to restore function to your 4×4 system.