If you’re staring at that frustrating “Service 4WD” light on your 2007-2013 Sierra 1500’s dash, you’ve come to the right place. As a technician with over two decades of experience, I’ve seen countless GM trucks roll into the bay with transfer case issues. More often than not, the culprit is a failed Transfer Case Control Module (TCCM). This small electronic box is the brain of your four-wheel-drive system, and when it fails, it can leave you stuck in two-wheel drive, unable to shift modes, or with an annoying warning light that just won’t go away.
The typical repair involves a costly trip to the dealership for a new module and mandatory programming. We eliminate that hassle. This TCCM, part number 24242480, is a direct-fit replacement that we program specifically to your truck’s Vehicle Identification Number (VIN) before it ships. This means you receive a true plug-and-play solution, loaded with the latest GM software updates to ensure optimal performance and longevity. You get to bypass the dealer, save on labor and programming fees, and get your truck’s 4×4 system back in action quickly and correctly.
Case Study: The ‘Service 4WD’ Light That Wouldn’t Quit
A customer brought in his ’11 Sierra 1500, frustrated because his 4WD was non-responsive and the service light was on. He’d already replaced the dash switch, thinking it was a simple fix. When I connected my scan tool, I found a U0102 code—Lost Communication with Transfer Case Control Module. This told me the TCCM wasn’t talking to the rest of the truck’s network. After confirming the module had power and ground, I knew the internal electronics had failed, a common issue I’ve traced back to voltage irregularities or moisture intrusion over time. Swapping in a pre-programmed TCCM like this one was the solution. The codes cleared, communication was restored, and the transfer case motor engaged perfectly. It’s a textbook repair that this part is designed to solve.
Is Your Truck Showing These Telltale Symptoms?
A failing TCCM can manifest in several ways. If you’re experiencing any of the following, this module is likely the solution you need for your 2007-2013 Sierra 1500 TCCM problem:
- ✔ “Service 4WD” or “Service Four Wheel Drive” message on the instrument cluster.
- ✔ Inability to switch between 2WD, 4HI, 4LO, or Auto modes.
- ✔ Indicator lights on the 4WD selector switch are off or flashing.
- ✔ The 4×4 system engages or disengages randomly.
- ✔ Diagnostic Trouble Codes (DTCs) stored in the system, such as C0327, C0398, C0569, or U0102.
A Straightforward Guide to TCCM Installation
This is a job most DIYers can handle with basic tools. The TCCM is typically located under the driver’s side of the dashboard, to the left of the steering column. Just follow these simple steps.
- Safety First: Disconnect the negative terminal from your truck’s battery to prevent any electrical shorts.
- Access the Module: Remove the lower dash panel (knee bolster) below the steering wheel. It’s usually held in by a few screws or clips.
- Locate the Old TCCM: Look for a small black or silver box with several electrical connectors. It will be mounted to a bracket.
- Disconnect and Remove: Carefully unplug the electrical connectors. Use a small screwdriver to gently release the locking tabs if needed. Then, unbolt the module from its mounting bracket.
- Install the New Module: Bolt your new, pre-programmed TCCM into place. Reconnect all electrical harnesses, ensuring they click securely into position.
- Final Steps: Reinstall the lower dash panel and reconnect the negative battery terminal. Start the truck and test your 4WD system to confirm full functionality. The “Service 4WD” light should be gone.
Guaranteed Fitment for Your GM Truck
This module is a direct replacement for part number 24242480 and is also compatible with a wide range of other GM part numbers. We guarantee fitment for the following vehicles, provided the module is located on the left-hand side of the dash. Please provide your VIN upon purchase to ensure we program the correct software for your specific options.
- ✔ 2007-2013 Sierra 1500 Pickup (2007 requires new body style, opt NQH)
- ✔ 2007-2014 Sierra 2500/3500 Pickup (2007 requires new body style)
- ✔ 2007-2014 Sierra Denali Models
- ✔ 2007-2013 Silverado 1500 Pickup (2007 requires new body style, opt NQH)
- ✔ 2007-2014 Silverado 2500/3500 Pickup (2007 requires new body style)
- ✔ 2008-2013 Avalanche 1500
- ✔ 2008-2014 Suburban 1500 / 2008-2013 Suburban 2500
- ✔ 2008-2014 Tahoe
- ✔ 2007-2014 Yukon & Yukon XL Models
Frequently Asked Questions
Why do I need to provide my VIN?
Your VIN allows us to program the module with the exact software and calibrations your truck left the factory with, plus any new updates from GM. This ensures perfect compatibility with your specific options (like transfer case type, axle ratio, etc.) and guarantees a true plug-and-play installation.
Is this part difficult to install myself?
Not at all for most people with basic mechanical skills. The module is located under the driver’s side dash and is accessible after removing a single trim panel. No special tools are required, and since we program it beforehand, you won’t need a trip to the dealer for any software work.
Will this fix the ‘Service 4WD’ light?
In the vast majority of cases where the TCCM is the root cause, yes. This module is designed to resolve communication errors and internal faults that trigger the service light. We recommend confirming the diagnosis with a scan tool if possible, looking for codes pointing to the TCCM.
What if I install it and my 4WD still doesn’t work?
While the TCCM is the most common failure point, other components like the transfer case encoder motor or the dash switch can also cause issues. If the problem persists, the issue may lie elsewhere in the 4×4 system. Our programmed module rules out the computer as the problem, allowing you or your mechanic to confidently diagnose other components.
Are any other part numbers compatible?
Yes, this module replaces numerous GM part numbers, including 24261367, 12588096, 24239190, 24240487, 24241143, 24241970, 24243084, 24243085, 24249095, and 24252878. Ordering this part ensures you get a reliable component programmed for your vehicle.