Regain Command of Your 4×4 System
If you’re staring at a persistent “Service 4WD” light on your 2007-2014 GMC Sierra 3500, you know the frustration. A heavy-duty truck without reliable four-wheel drive is a tool that can’t do its job. Whether you’re unable to shift into 4-High for a snowy road or stuck in 4-Low after a tough job, a faulty Transfer Case Control Module (TCCM) is often the culprit. As a technician with two decades of experience, I’ve seen how a small electronic box can sideline a powerful truck. This isn’t just an inconvenience; it’s a matter of capability and safety.
This is your direct, no-hassle solution. We’re offering a genuine replacement 2007-2014 Sierra 3500 TCCM that arrives at your door completely programmed to your truck’s specific VIN. Forget about expensive dealership visits, towing fees, or the need for specialized scan tools. We handle the programming for you, loading the latest GM software updates to ensure optimal performance and communication with your vehicle’s other systems. You get a part that’s ready for installation right out of the box.
From the Diagnostic Bay: The Pre-Winter Panic
A customer brought his ’11 Sierra 2500 into my shop last fall, just as the first snow was predicted. His 4WD selector switch was unresponsive, and the “Service 4WD” light was on. He was worried he wouldn’t be able to plow his long driveway. After confirming power and ground to the module, my high-end scan tool couldn’t communicate with the TCCM—a classic sign of internal failure. Instead of a multi-day wait and a hefty programming bill from the dealer, we installed one of these VIN-programmed modules. In under 30 minutes, the truck was shifting perfectly through all 4WD ranges. The customer left with his truck fully capable and his peace of mind restored before the first snowflake fell.
Common Signs of a Failing TCCM
A failing TCCM can cause a range of confusing symptoms. If your truck is experiencing any of the following, this module is the likely solution. In my experience, these issues rarely resolve on their own and can worsen over time.
- ✔ “Service 4WD” or “Service Four Wheel Drive” message on the instrument cluster.
- ✔ 4WD selector switch lights are flashing or completely dead.
- ✔ Inability to shift into or out of 4-High, 4-Low, or Auto 4WD.
- ✔ Getting stuck in a specific 4WD mode.
- ✔ Diagnostic Trouble Codes (DTCs) stored in the system, such as C0327, C0306, or U0102 (Lost Communication With Transfer Case Control Module).
A Straightforward Guide to Installation
You don’t need to be a master mechanic to replace this module. With basic hand tools, you can have your 4×4 system working again in less than an hour. It’s located on the driver’s side, typically mounted to a metal bracket above the emergency brake pedal assembly.
- Safety First: Disconnect the negative terminal from your truck’s battery to prevent any electrical shorts.
- Locate the Module: Find the TCCM under the driver’s side dashboard. It’s a small black or silver box with several electrical connectors. You may need to remove a lower dash panel for easier access.
- Disconnect and Remove: Carefully unplug the electrical connectors. They have locking tabs that need to be depressed. Then, unbolt the module from its mounting bracket (usually a couple of small bolts or nuts).
- Install the New Module: Bolt the new, pre-programmed TCCM into place. Securely plug in all the 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.
Guaranteed Fitment for Your GM Truck or SUV
This module is a direct replacement for a wide range of GM vehicles, ensuring perfect communication and function. Please verify your model and year below. This part is compatible with original 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), 2008-2013
- SIERRA 2500 PICKUP: 2007 (New Body Style), 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), 2008-2013
- SILVERADO 2500 PICKUP: 2007 (New Body Style), 2008-2014
- SILVERADO 3500 PICKUP: 2007 (New Body Style), 2008-2014
- SUBURBAN 1500/2500: 2008-2014
- TAHOE: 2008-2014
- YUKON & YUKON XL 1500/2500: 2007-2014
Frequently Asked Questions
How does the VIN programming work?
After you place your order, you simply provide us with your 17-digit Vehicle Identification Number (VIN). Our technicians use this to flash the module with the exact software and calibrations your truck had from the factory, plus any available GM updates. This ensures it works seamlessly once installed.
Do I need any special tools to install this?
No. Basic hand tools like a socket set and a screwdriver are all that’s typically required. Since the module comes pre-programmed, you do not need any diagnostic scan tools for the installation.
Is this a new or used part?
This is a high-quality, inspected, and tested recycled OEM part. Each module is verified for full functionality before being programmed and shipped, offering OEM performance without the high dealership price.
What if this doesn’t fix my problem?
While the TCCM is the most common point of failure for these symptoms, other issues like a faulty transfer case encoder motor or selector switch can sometimes be the cause. We recommend proper diagnosis, but if you have questions, our expert team is here to help you troubleshoot.
Will this part number 24241970 work for my truck?
Yes, this module is a direct replacement for part number 24241970 and a dozen other compatible GM part numbers. As long as your vehicle is on the fitment list, this module is the correct part for the job.