Restore Your 4×4 System with a Reliable, Pre-Programmed Solution
As a technician with over two decades of experience, I’ve seen countless GM trucks and SUVs roll into the bay with the dreaded “Service 4WD” light illuminated. It’s a frustrating issue that can leave you without four-wheel drive when you need it most—whether you’re navigating a snowy road, a muddy job site, or a steep boat ramp. The cause is very often a failed Transfer Case Control Module (TCCM), the electronic brain that manages your 4×4 system.
This isn’t just a replacement part; it’s a complete, hassle-free fix. We take a genuine GM-spec TCCM, compatible with part number 24240487, and pre-program it with the latest vehicle-specific software directly from GM. By providing us with your Vehicle Identification Number (VIN) at checkout, you receive a module that is 100% plug-and-play. You can skip the expensive trip to the dealership for programming and avoid the complex tools required for the job. This is the straightforward, reliable repair you’ve been looking for.
Case Study: A Tricky Diagnosis
A customer brought in his 2011 Sierra 2500, convinced his transfer case was shot. The 4WD selector lights were blinking, and it was stuck in 4-HI. He was bracing for a multi-thousand-dollar repair bill. After plugging in my scanner, I found a U0102 code—Lost Communication with Transfer Case Control Module. Instead of a catastrophic mechanical failure, the TCCM had simply given up. We installed one of our pre-programmed modules in under 30 minutes. The lights stopped blinking, the truck shifted perfectly through all ranges, and the customer drove away having saved a fortune. This is the most common scenario I see for this failure.
Common Signs of a Failing TCCM
If your vehicle is experiencing any of these issues, a faulty transfer case module is the likely culprit. Replacing your Yukon XL 2500 TCCM can be the definitive solution.
- ✔ “Service 4WD” or “Service Four Wheel Drive” message on the dashboard.
- ✔ Inability to switch between 2WD, 4-HI, 4-AUTO, and 4-LO.
- ✔ Selector switch lights are blinking or do not illuminate at all.
- ✔ Vehicle is stuck in one drive mode (e.g., stuck in 4WD).
- ✔ Diagnostic Trouble Codes (DTCs) stored in the system, such as C0306, C0327, C0374, or U0102.
A Straightforward Guide to Installation
Installing your new module is a job most DIYers can handle in their own driveway with basic hand tools. It’s typically located on the driver’s side, up under the dashboard.
- Safety First: Always disconnect the negative terminal from your vehicle’s battery before starting any electrical work.
- Locate the Module: On most of these GM trucks and SUVs, the TCCM is mounted to a bracket to the left of the steering column, above the emergency brake pedal.
- Disconnect and Remove: Carefully unplug the electrical connectors from the old module. They have release tabs that need to be pressed. Then, remove the nuts or bolts holding the module to its bracket.
- Install the New Module: Mount your new, pre-programmed TCCM onto the bracket and securely tighten the fasteners. Reconnect the electrical connectors, ensuring they click into place.
- Final Steps: Reconnect the negative battery terminal. Start the vehicle and test the 4WD selector switch to confirm that all modes engage correctly. The “Service 4WD” light should be off.
Verified Vehicle Compatibility
This module is a direct replacement for a wide range of General Motors trucks and SUVs. We guarantee fitment for the following vehicles, provided they have the corresponding electronic-shift transfer case. This module replaces part numbers: 24261367, 12588096, 24239190, 24240487, 24241143, 24241970, 24242480, 24243084, 24243085, 24249095, 24252878.
- Avalanche 1500: 2008-2013
- Sierra 1500/2500/3500: 2007 (New Body Style), 2008-2014
- Sierra Denali 1500/2500/3500: 2007-2014
- Silverado 1500/2500/3500: 2007 (New Body Style), 2008-2014
- Suburban 1500/2500: 2008-2014
- Tahoe: 2008-2014
- Yukon & Yukon XL 1500: 2007-2014
- Yukon XL 2500: 2008-2013
Frequently Asked Questions About the Yukon XL 2500 TCCM
Frequently Asked Questions
Why does this module need my VIN to be programmed?
Your vehicle’s VIN allows us to load the exact software and calibrations specified by GM for your truck’s unique configuration (engine, transmission, axle ratios). This ensures perfect communication between the TCCM and other vehicle systems, guaranteeing proper function without any additional programming.
Is this a difficult part to install myself?
Not at all. For most DIYers with basic tools, this is a very manageable job that can be completed in under an hour. The module is located under the driver’s side dashboard and is typically held in by a couple of small bolts or nuts.
Will this fix my “Service 4WD” light for good?
In the vast majority of cases where the TCCM is the root cause, yes. This module, loaded with the latest GM software updates, is designed to resolve the common electronic failures that trigger that warning light and restore full system functionality.
What happens if I don’t replace a bad TCCM?
A failing TCCM will leave you without the ability to use your four-wheel drive system. You may be stuck in 2WD, or worse, stuck in 4WD, which can cause excessive tire wear and driveline strain when driving on dry pavement. It’s a critical component for vehicle capability and safety in adverse conditions.
Is this part the same as the one from the dealership?
This module meets or exceeds original equipment specifications. The key difference is convenience and cost. We provide the programming for you, so you receive a part that is ready for immediate installation, saving you the time and expense of a dealership service appointment.