Restore Your Truck’s Four-Wheel Drive Capability
As a technician with over two decades of experience under the hood of GM trucks, I’ve seen countless drivers frustrated by a sudden “Service 4WD” light on their dash. Your powerful 2007-2014 GMC Sierra 2500 is built for tough jobs and challenging terrain, but when the four-wheel drive system fails, it can leave you feeling stranded. The culprit is often a faulty Transfer Case Control Module (TCCM), the electronic brain responsible for engaging and disengaging your 4×4 system. When it fails, you lose the ability to shift into 4-High or 4-Low, turning your capable workhorse into a two-wheel drive vehicle.
This isn’t just an inconvenience; it’s a matter of capability and safety, especially in poor weather or off-road conditions. This replacement Transfer Case Control Module, part number 24240487, is the direct solution to this common problem. We take the hassle out of the repair by programming the module to your truck’s specific Vehicle Identification Number (VIN) before we ship it. This means no expensive trip to the dealership for programming—it arrives at your door ready for a straightforward installation.
A Technician’s Notebook
I remember a customer with a 2011 Sierra 2500 who was convinced he needed a new transfer case, a repair that can run into the thousands. His 4WD selector switch was dead, and the “Service 4WD” message was constantly on. He’d already replaced the switch with no luck. I hooked up my scan tool and saw a U0102 code—Lost Communication with Transfer Case Control Module. Instead of a catastrophic mechanical failure, it was simply an internal short in the TCCM. We swapped in a pre-programmed module just like this one, and in under 30 minutes, his 4×4 system was fully operational. He saved a fortune and drove away with his truck’s full capability restored.
Is Your Truck Exhibiting These TCCM Failure Signs?
A failing TCCM can manifest in several ways. If you’re experiencing any of the following, this module is likely the solution you need. Keep an eye out for Diagnostic Trouble Codes (DTCs) like C0306, C0327, C0374, or U0102.
- ✔ “Service 4WD” or “Service Four Wheel Drive” message on the instrument cluster.
- ✔ Inability to shift between 2WD, 4-High, and 4-Low modes.
- ✔ The 4WD selector switch lights are inoperative or flashing.
- ✔ The system is stuck in one mode (e.g., stuck in 4WD or 2WD).
- ✔ Audible clicking or grinding noises from the transfer case during attempted shifts.
- ✔ Communication error codes stored in the vehicle’s computer system.
A Straightforward Guide to Installation
Installing your new 2007-2014 Sierra 2500 TCCM is a job most DIYers can handle with basic tools. Since we program it beforehand, you skip the most complicated step. Follow this process for a smooth installation:
- Safety First: Always 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 under the driver’s side dashboard, to the left of the steering column. You may need to remove a 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 mounting bracket.
- Install the New Module: Bolt the new, pre-programmed TCCM into place. Firmly reconnect the electrical connectors, ensuring they click securely into position.
- Final Steps: Reinstall any dash panels you removed. Reconnect the negative battery terminal. Start the truck and test the 4WD selector switch to confirm proper operation. The “Service 4WD” light should be gone.
Verified Fitment for Your GM Truck or SUV
This module is a direct-fit replacement for a wide range of General Motors trucks and SUVs. It is compatible with the original part numbers: 24261367, 12588096, 24239190, 24240487, 24241143, 24241970, 24242480, 24243084, 24243085, 24249095, and 24252878. Please confirm your vehicle is on the list below:
- 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 2500/3500: 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 you need my VIN to program the module?
Your truck’s VIN allows us to load the exact GM factory software and calibrations specific to your vehicle’s options, such as tire size and axle ratio. This ensures seamless communication and perfect operation, eliminating the need for a dealership visit.
Is this part truly plug-and-play?
Yes. Because we handle all the programming before shipping, the module arrives ready to be installed. Once you plug it in, it will function correctly without any additional setup or dealer-level tools.
What if I install this and my 4WD still doesn’t work?
While the TCCM is the most common point of failure, other components like the transfer case encoder motor or the dash switch can also cause issues. We recommend proper diagnosis, but this module resolves the vast majority of electronic 4WD system faults.
Where is the TCCM located on my 2012 Sierra 2500?
On the 2007-2014 Sierra/Silverado platform, the Transfer Case Control Module is typically mounted to a metal bracket under the driver’s side of the dashboard, near the parking brake pedal.
How long does the programming process take after I order?
Once you provide your VIN, programming is typically completed within one business day. We then ship the module directly to you, getting you the part you need as quickly as possible.