Restore Full 4WD Control to Your GM Truck or SUV
As a technician with over two decades of experience, I’ve seen countless GM trucks and SUVs roll into the shop with the dreaded ‘Service 4WD’ light illuminated. It’s a frustrating problem that can leave you without four-wheel drive when you need it most. The culprit is often a failed Transfer Case Control Module (TCCM). This isn’t just an inconvenience; it’s a reliability issue. This module is the solution, restoring the communication between your dash switch, the transfer case encoder motor, and the rest of your vehicle’s systems.
What makes this part the best choice for both DIY enthusiasts and professional shops is that it arrives ready for installation. We take your vehicle’s VIN and program the module with the very latest GM-certified software before it even leaves our facility. This means you can skip the expensive trip to the dealership for programming. You get a reliable, plug-and-play fix that restores your vehicle’s factory operation. This is the exact approach I take in my own bay to ensure a lasting repair that doesn’t result in a comeback.
From the Diagnostic Bay
I recently had a 2011 Yukon XL 1500 come in with an intermittent 4WD issue. The owner said sometimes it would shift into 4HI, other times the light would just blink and nothing would happen. He’d already replaced the dash switch to no avail. After hooking up my scanner, I found a U0102 ‘Lost Communication with TCCM’ code. Instead of chasing wires, I checked the module’s power and ground—they were solid. This pointed directly to an internal failure in the original TCCM. We installed one of these VIN-programmed modules, and the problem was solved in under 30 minutes. The customer was thrilled to have his 4WD back without a hefty dealership bill.
Is Your Yukon Showing These 4WD Warning Signs?
A failing TCCM can manifest in several ways. If you’re experiencing any of the following, a faulty module is the likely cause. In my shop, these symptoms are the classic indicators for a 2007-2014 Yukon XL TCCM replacement.
- ✔ ‘Service 4WD’ or ‘Service Four Wheel Drive’ message on the dash.
- ✔ 4WD selector switch lights are blinking or completely inoperative.
- ✔ Inability to shift into or out of 4-High, 4-Low, or Auto 4WD.
- ✔ Grinding or clunking noises when attempting to engage the 4WD system.
- ✔ Diagnostic Trouble Codes (DTCs) stored in the system, such as C0306, C0327, C0374, or U0102.
- ✔ The 4WD system seems to engage or disengage on its own.
A Straightforward Guide to Installation
One of the best features of this module is its simple, direct-fit installation. You don’t need specialized tools, just some basic hand tools and about 30-45 minutes.
- Safety First: Disconnect the negative terminal from your vehicle’s battery to prevent any electrical shorts.
- Locate the TCCM: On most 2007-2014 GM trucks and SUVs, the module is located under the driver’s side of the dashboard, to the left of the steering column. You may need to remove the 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. Then, unbolt the module from its mounting bracket.
- Install the New Module: Bolt your new, pre-programmed TCCM into the same location. Reconnect the electrical connectors, ensuring they click securely into place.
- 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 Vehicle Compatibility
This 2007-2014 Yukon XL TCCM is a direct-fit replacement, guaranteed to work with the following GM models. Simply provide your VIN at checkout for precise programming. This module is a direct replacement for part numbers: 24261367, 12588096, 24239190, 24240487, 24241143, 24241970, 24242480, 24243084, 24243085, 24249095, 24252878.
- 2008-2013 Avalanche 1500
- 2007-2013 Sierra 1500 (2007 new body style)
- 2007-2014 Sierra 2500/3500 (2007 new body style)
- 2007-2010 Sierra Denali
- 2011-2014 Sierra Denali 2500/3500
- 2007-2013 Silverado 1500 (2007 new body style)
- 2007-2014 Silverado 2500/3500 (2007 new body style)
- 2008-2014 Suburban 1500
- 2008-2013 Suburban 2500
- 2008-2014 Tahoe
- 2007-2014 Yukon & Yukon Denali
- 2007-2014 Yukon XL 1500 & Yukon XL 1500 Denali
- 2008-2013 Yukon XL 2500
Frequently Asked Questions
Why do you need my VIN?
Your Vehicle Identification Number (VIN) allows us to program the module with the exact software and calibrations specified by GM for your truck’s specific options. This ensures perfect compatibility and function without any additional programming required on your end.
Is this a difficult part to install myself?
Not at all. For most DIYers with basic tools, this is a very straightforward job. The module is typically located under the driver’s side dash and is held in by a few bolts. Since it comes pre-programmed, it’s a simple swap.
Will this fix the ‘Service 4WD’ light?
In the vast majority of cases, yes. The TCCM is the most common point of failure that causes the ‘Service 4WD’ warning. If your symptoms match the ones listed above, this module is the definitive solution.
What if I have a different part number on my old module?
GM often updates part numbers over time. Our module, part number 24243084, is the modern replacement for a wide range of older part numbers, including those listed in the fitment section. As long as your vehicle is on the compatibility list, this module will work perfectly.
Is any other relearn procedure required after installation?
No. Because we program the module to your VIN before shipping, no special relearn procedures or tools are needed. Just install it, connect the battery, and you’re ready to go.