Stuck with a ‘Service 4WD’ Light? Get a Reliable Fix.
As a technician with over two decades of experience under the hood of GM trucks, I’ve seen it all. One of the most common and frustrating issues on a 2007-2014 Sierra 2500 is a failing Transfer Case Control Module (TCCM). It’s the brain behind your four-wheel-drive system, and when it goes bad, it can leave you without traction when you need it most. This isn’t just an inconvenience; it’s a matter of safety and capability. Whether you’re a professional mechanic looking for a dependable part or a DIYer determined to fix your own truck, this is the solution you need.
This module solves the core problem by arriving at your door fully programmed with the latest GM software, specifically matched to your truck’s VIN. You provide us with your VIN at checkout, and we handle the complex programming. This means no expensive trip to the dealership, no waiting for appointments, and no special scan tools required for setup. It’s a direct-fit, plug-and-play replacement for part number 24242480 and other compatible numbers listed below. Restore your truck’s off-road and all-weather confidence with a part built for performance and reliability.
A Technician’s Notebook: The Intermittent 4WD Failure
I remember a customer with a 2011 Sierra 2500 HD who was at his wit’s end. His ‘Service 4WD’ light would come on randomly. Sometimes he could shift into 4-High, other times the switch was completely dead. He’d already replaced the dash switch and the transfer case encoder motor, but the problem persisted. When he brought it to my shop, the scan tool showed a U0102 code—Lost Communication with TCCM. After checking the wiring for corrosion and finding it clean, we pinpointed the module itself. These TCCMs often fail internally due to heat cycles and vibration, causing intermittent connection loss. We installed a VIN-programmed module, and the problem was solved instantly. It’s a classic example of why throwing parts at a problem doesn’t work; a proper diagnosis points to the right solution, and a quality, pre-programmed part makes the repair simple.
Is Your Truck Showing These Symptoms?
A faulty TCCM can cause a range of issues. If you’re experiencing any of the following, this module is the likely solution for your 2007-2014 Sierra 2500 TCCM problems:
- ✔ ‘Service 4WD’ or ‘Service Four Wheel Drive’ message on the dash.
- ✔ Inability to shift into or out of 4WD (4HI or 4LO).
- ✔ 4WD indicator lights on the selector switch are blinking or not lit at all.
- ✔ The system gets stuck in 4WD or defaults to 2WD.
- ✔ Diagnostic Trouble Codes (DTCs) stored, such as C0327, C0398, U0102, or B0790.
- ✔ A noticeable delay or grinding noise when attempting to engage the transfer case.
A Straightforward Guide to Installation
Replacing the TCCM on your Sierra is a job most DIYers can handle in under 30 minutes with basic hand tools. Because this module comes pre-programmed, you skip the hardest part of the job!
- Safety First: Disconnect the negative terminal from your truck’s battery to prevent any electrical shorts.
- Locate the Module: On most 2007-2014 GM trucks, the TCCM is located behind the lower dash panel on the driver’s side, 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 module. They have locking tabs that need to be depressed. Once unplugged, unbolt the module from its mounting bracket.
- Install the New Module: Bolt your new, pre-programmed TCCM into place. Firmly reconnect the electrical connectors, ensuring they click securely into position.
- 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 guaranteed fit for a wide range of GM trucks and SUVs. Please verify your vehicle is on the list below. This part is a direct replacement for multiple part numbers, including: 24261367, 12588096, 24239190, 24240487, 24241143, 24241970, 24242480, 24243084, 24243085, 24249095, and 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 2500/3500: 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 1500/2500: 2008-2014 / 2008-2013
- TAHOE: 2008-2014
- YUKON & YUKON XL 1500/2500: 2007-2014
Frequently Asked Questions About Your 2007-2014 Sierra 2500 TCCM
Frequently Asked Questions
Do I need to do any programming myself?
No. We program the module to your specific vehicle using the VIN you provide during checkout. It arrives ready for installation, with no further programming or dealer visits required.
How do I provide my VIN?
Simply enter your 17-digit Vehicle Identification Number (VIN) in the designated box on the product page or during the checkout process. We cannot ship your order until we have this information.
Is this part difficult to install?
Not at all. For most DIYers with basic tools, this is a straightforward job that takes less than an hour. It’s typically located under the driver’s side dash and is held in by a few bolts and electrical connectors.
Will this fix my ‘Service 4WD’ light?
In the vast majority of cases, a faulty TCCM is the cause of the ‘Service 4WD’ light and related shifting issues. While other parts like the encoder motor or dash switch can fail, this module is the most common point of failure.
What if I have a different part number on my old module?
This module is a direct replacement for a wide range of GM part numbers. Please check the compatible part number list in the description to ensure it matches one of the listed alternatives.