Restore Full Control Over Your Truck’s 4WD System
Is the ‘Service 4WD’ light on your 2007-2013 Sierra 1500’s dashboard causing you headaches? Are you unable to switch between 2WD and 4WD, or hearing unsettling noises when you try? You’re not just losing capability; you’re losing the confidence you need in your truck. In my 20+ years as a technician, I’ve seen countless GM trucks sidelined by a faulty Transfer Case Control Module (TCCM). It’s the electronic brain of your four-wheel-drive system, and when it fails, it can leave you stuck.
This isn’t just a replacement part; it’s a complete, ready-to-install solution. We take a genuine OEM-spec TCCM and flash it with the latest GM-certified software, specifically programmed to your truck’s unique Vehicle Identification Number (VIN). This means you get a module that communicates flawlessly with your vehicle’s other systems, restoring original performance and reliability without a costly trip to the dealership for programming. Simply provide your VIN at checkout, and we handle the rest.
Case Study: A Tricky Diagnosis
A customer brought in his ’11 Sierra 2500, convinced he needed a new transfer case. Another shop quoted him over $2,500 for the job. His symptoms were classic: the 4WD selector switch was dead, and the truck was stuck in 2WD. Before tearing anything apart, I connected my scan tool. I wasn’t seeing any codes from the transfer case motor, but I saw a U0102 code: ‘Lost Communication with Transfer Case Control Module.’ After checking the TCCM’s power and ground circuits (which were fine), it was clear the module itself had failed internally. We installed a VIN-programmed TCCM, and in under 30 minutes, the 4×4 system was working perfectly. That simple diagnosis saved the customer over $2,000 and a lot of unnecessary work.
Is Your Truck Showing These Symptoms?
- ✔ ‘Service 4WD’ or ‘Service Four Wheel Drive’ message on the dash.
- ✔ Inability to shift into or out of 4-High, 4-Low, or Auto 4WD.
- ✔ The 4WD selector switch lights are off or flash without engaging.
- ✔ Grinding or clunking sounds when attempting to engage the 4×4 system.
- ✔ Diagnostic Trouble Codes (DTCs) stored in the system, such as C0327, C0306, or the common U0102 communication code.
A Straightforward Guide to Installation
One of the best parts about this solution is its simplicity. You don’t need to be a master mechanic to get your truck back in top shape. The TCCM is typically located under the driver’s side of the dashboard, to the left of the steering column.
- Safety First: Disconnect the negative terminal from your truck’s battery to prevent any electrical shorts.
- Locate the Module: Find the existing TCCM under the driver’s side dash. It’s a small black box with several electrical connectors.
- Swap the Connectors: Carefully unplug the wiring harnesses from the old module. They have locking tabs, so press them firmly to release. Plug them directly into your new, pre-programmed module.
- Mount the New Module: Secure the new TCCM in the same location as the old one. It should snap or bolt right into place.
- Final Step: Reconnect the negative battery terminal. Start the truck and test your 4WD selector switch. The system should now function as intended.
Will This Fit My Truck or SUV?
This module is a direct-fit replacement for a wide range of GM vehicles. We guarantee compatibility if your vehicle is listed below. It directly replaces part numbers: 24261367, 12588096, 24239190, 24240487, 24241143, 24241970, 24242480, 24243084, 24243085, 24249095, and 24252878.
AVALANCHE 1500: 2008-2013
SILVERADO 1500 PICKUP: 2007 (New Body Style, Opt NQH), 2008-2013
SILVERADO 2500/3500 PICKUP: 2007 (New Body Style, Opt NQF), 2008-2014
SUBURBAN 1500/2500: 2008-2014
TAHOE: 2008-2014
GMC:
SIERRA 1500 PICKUP: 2007 (New Body Style, Opt NQH), 2008-2013
SIERRA 2500/3500 PICKUP: 2007 (New Body Style, Opt NQF), 2008-2014
SIERRA DENALI 1500/2500/3500: 2007-2014
YUKON & YUKON XL 1500/2500: 2007-2014
Do I really need to provide my VIN?
Do I really need to provide my VIN?
Yes, absolutely. Providing your VIN is essential. We use it to load the precise GM software that matches your truck’s specific options, like axle ratio and tire size. This ensures seamless communication and prevents compatibility issues, saving you from a potential trip to the dealer.
Is this part difficult to install myself?
Not at all. For most DIYers with basic tools, this is a 30-minute job. The module is located under the driver’s side dashboard and involves unplugging the old unit and plugging in the new one. Our installation guide above walks you through the simple steps.
What if this doesn’t fix my ‘Service 4WD’ light?
While the TCCM is the most common point of failure for these symptoms, other issues like a faulty transfer case encoder motor or a bad selector switch can also be the cause. We recommend confirming the diagnosis with a scan tool that can read TCCM codes (like U0102) before ordering.
Is this a new or a used part?
This is a high-quality, tested component that meets or exceeds original equipment specifications. We ensure every module is verified for full functionality before it is programmed with the latest software and shipped to you.