Is the dreaded “Service 4WD” light glaring at you from the dash of your 2008-2014 Chevrolet Tahoe? Are you struggling with a truck that refuses to shift into or out of four-wheel drive? You’ve come to the right place. As a technician with over two decades of experience under the hood, I’ve seen this exact issue countless times. The problem often isn’t a major mechanical failure in your transfer case, but a faulty Transfer Case Control Module (TCCM). This module is the brain of your 4×4 system, and when it fails, it can cause frustrating and unpredictable behavior.
We offer a dependable and straightforward solution: a replacement TCCM, part number 24243084, that arrives at your door fully programmed to your vehicle’s specific VIN. We load it with the latest GM software, eliminating the need for an expensive trip to the dealership for programming. This is a direct-fit replacement that restores the function and reliability you expect from your Tahoe.
From the Diagnostic Bay
I remember a 2011 Tahoe that came into my shop stuck in 4-Low. The owner was frantic; he used his SUV daily for work and couldn’t drive over 25 mph. His dash switch was unresponsive, and he feared a massive transfer case repair bill. After a quick scan, I pulled code U0102 – Lost Communication with Transfer Case Control Module. Instead of a multi-thousand-dollar repair, the fix was this exact module. Because we had it pre-programmed, the total time from diagnosis to him driving away was under an hour. He was relieved, and his truck’s 4WD system was back to operating perfectly.
Is Your Tahoe Showing These 4WD Symptoms?
A failing TCCM can manifest in several ways. If you’re experiencing any of the following, this module is the likely solution:
- ✔ “Service 4WD” or “Service Four Wheel Drive” message on the instrument cluster.
- ✔ Inability to switch between 2WD, 4HI, Auto, or 4LO modes.
- ✔ The 4WD selector switch lights don’t illuminate or flash without engaging.
- ✔ The vehicle is stuck in one 4WD mode.
- ✔ Diagnostic Trouble Codes (DTCs) stored in the system, such as C0327, C0398, or U0102.
- ✔ A noticeable clunking or grinding noise during attempted shifts of the transfer case.
A Straightforward Guide to Installation
Replacing the 2008-2014 Tahoe TCCM is a job most DIY enthusiasts can handle in their own driveway. The module is typically located on the driver’s side, up under the dashboard. Here’s a general guide:
- Safety First: Disconnect the negative terminal from your vehicle’s battery to prevent any electrical shorts.
- Locate the Module: Find the TCCM. In most Tahoes of this generation, it’s mounted to a bracket to the left of the steering column, above the emergency brake pedal. 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 your new, pre-programmed TCCM into place. Securely plug in the electrical connectors, ensuring they click to confirm they are fully seated.
- 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 be gone.
Verified Fitment for Your GM Truck or SUV
This module is a direct replacement for a wide range of General Motors trucks and SUVs. While this listing is focused on the 2008-2014 Tahoe TCCM, please verify your vehicle in the list below. It is a compatible replacement for part numbers: 24261367, 12588096, 24239190, 24240487, 24241143, 24241970, 24242480, 24243084, 24243085, 24249095, and 24252878.
- Chevrolet Avalanche 1500: 2008-2013
- Chevrolet Silverado 1500/2500/3500: 2007 (New Body Style) – 2014
- Chevrolet Suburban 1500/2500: 2008-2014
- Chevrolet Tahoe: 2008-2014
- GMC Sierra 1500/2500/3500: 2007 (New Body Style) – 2014
- GMC Sierra Denali / 2500 / 3500: 2007-2014
- GMC Yukon / Yukon XL 1500 / Yukon XL 2500: 2007-2014
Frequently Asked Questions
Why do I need to provide my VIN?
Your vehicle’s VIN (Vehicle Identification Number) is essential. We use it to load the precise, factory-correct software and the latest GM updates for your specific vehicle configuration. This ensures the module communicates perfectly with your truck’s other systems, making the installation truly plug-and-play.
Is this part difficult to install myself?
For most individuals with basic hand tools and some mechanical comfort, this is a very manageable DIY job. The module is located under the driver’s side dashboard. By following our guide and taking your time, you can save significantly on labor costs.
Will this fix my “Service 4WD” light?
In the vast majority of cases, the symptoms described (Service 4WD light, inability to shift modes) are caused by a failed TCCM. While other issues like a faulty encoder motor or selector switch can occur, the TCCM is the most common point of failure. This module is the definitive solution for a faulty TCCM.
What happens if I don’t replace a faulty TCCM?
Ignoring a failing TCCM means you lose the ability to use your four-wheel-drive system. You could get stuck in 4WD, which harms fuel economy and causes driveline stress on dry pavement, or you could be unable to engage it when you need it most in snow, mud, or on a boat ramp.
Is this a new or used part?
This is a high-quality, inspected, and tested used OEM part. Each module is verified for full functionality before being programmed with your vehicle’s specific software. This provides OEM reliability at a fraction of the cost of a new part from a dealer.