Restore Full Control of Your Truck’s 4×4 System
If you’re staring at a persistent ‘Service 4WD’ light on the dash of your 2011-2014 Sierra Denali 3500, you’re not just dealing with an annoying warning. You’re facing a loss of capability. Whether you can’t shift into 4-High for a slippery road or get into 4-Low for a tough job, a faulty Transfer Case Control Module (TCCM) is often the culprit. As a technician, I’ve seen these modules fail countless times, leaving hardworking trucks stuck in two-wheel drive. This isn’t just an inconvenience; it’s a reliability issue you can’t afford to ignore.
This is the definitive, no-hassle solution. We are offering a genuine replacement Sierra 3500 Transfer Case Module, part number 24261367, that arrives at your door fully programmed to your truck’s specific Vehicle Identification Number (VIN). We load it with the latest GM-approved software, ensuring it communicates flawlessly with your vehicle’s other systems right out of the box. You get to skip the expensive trip to the dealership for programming—saving you time, money, and frustration.
From the Diagnostic Bay: The Case of the Intermittent 4WD
A customer brought in his ’12 Sierra 3500, frustrated because his 4WD would only engage sometimes. He’d already replaced the transfer case shift motor, but the problem persisted. No check engine light, just the ‘Service 4WD’ message popping up randomly. Hooking up my professional scan tool, I pulled a DTC U0102 – Lost Communication with Transfer Case Control Module. While this can sometimes point to wiring, experience told me to check the TCCM itself. We found corrosion on the connector pins from moisture intrusion—a common failure point. A new, properly programmed module fixed it instantly. This highlights why simply replacing parts isn’t enough; the module is the brain, and a healthy one is critical.
Is Your Truck Showing These Symptoms?
- ✔ ‘Service 4WD’ or ‘Service Four Wheel Drive’ message on the instrument cluster.
- ✔ Inability to switch between 2WD, 4WD High, and 4WD Low.
- ✔ The 4×4 selector switch lights don’t illuminate or flash without engaging.
- ✔ Grinding or clunking noises when attempting to shift the transfer case.
- ✔ Diagnostic Trouble Codes (DTCs) stored, such as U0102, C0327, or C0306.
- ✔ Vehicle feels stuck in one drive mode, regardless of switch position.
A Straightforward Guide to Installation
- ✔ Safety First: Always disconnect the negative terminal from your truck’s battery before starting any electrical work.
- ✔ Locate the Module: The TCCM is typically mounted on the driver’s side of the dashboard, behind the lower dash panel or near the steering column. You may need to remove a few plastic trim panels for access.
- ✔ Disconnect and Remove: Carefully unplug the electrical connectors from the old module. They have locking tabs, so be gentle. Then, 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 until you hear them click.
- ✔ Reconnect and Test: Reconnect the negative battery terminal. Turn the ignition on (without starting the engine) and test the 4WD selector switch. The lights should illuminate correctly, and you should hear the transfer case motor engage as you switch modes.
Guaranteed Fitment for Your GM HD Truck
This module is a direct replacement for a wide range of GM trucks and SUVs. While this listing is for the 2011-2014 Sierra Denali 3500, it also fits the vehicles listed below. It is a compatible replacement for part numbers: 24261367, 12588096, 24239190, 24240487, 24241143, 24241970, 24242480, 24243084, 24243085, 24249095, and 24252878.
- AVALANCHE 1500: 2008-2013
- SIERRA & SILVERADO 1500: 2007 (New Body Style) – 2013
- SIERRA & SILVERADO 2500/3500: 2007 (New Body Style) – 2014
- SIERRA DENALI: 2007-2010
- SIERRA DENALI 2500/3500: 2011-2014
- SUBURBAN 1500/2500: 2008-2014
- TAHOE: 2008-2014
- YUKON & YUKON XL: 2007-2014
Frequently Asked Questions
Frequently Asked Questions
Do I need to take this part to a dealer to be programmed?
No. This is the biggest benefit of our service. We program the module to your vehicle’s VIN before we ship it, so it’s ready for installation right out of the box.
How do I provide my VIN?
After you complete your purchase, simply send us a message with your 17-digit Vehicle Identification Number (VIN). We cannot ship the part until we receive this information.
Is this a difficult part to install for a DIYer?
For most individuals with basic mechanical skills, this is a very manageable job. It’s typically located inside the cab and requires removing a few dash panels. No specialized tools are needed.
What if this doesn’t fix my problem?
While this Sierra 3500 Transfer Case Module is a common fix for 4WD issues, other components like the transfer case encoder motor or wiring can also be at fault. We recommend proper diagnosis, but a faulty TCCM is one of the most frequent causes.
Will this module have the latest software?
Yes. We flash each module with the newest stable software release from GM corresponding to your VIN. This ensures optimal performance and communication with your truck’s other electronic systems.