If you’re staring at a persistent “Service 4WD” light on your 2007-2013 GMC Sierra 1500, you know the frustration. Your truck’s four-wheel-drive system is a critical feature, especially in tough weather or off-road conditions, and when it fails, you’re left with a less capable vehicle. The Transfer Case Control Module (TCCM) is the electronic brain of that system, and when it fails, it can leave you stuck in two-wheel drive—or worse, stuck in 4-LO. This isn’t just an inconvenience; it’s a reliability issue.
As a technician with two decades of experience under the hood, I’ve seen countless GM trucks sidelined by a faulty TCCM. The good news is that replacing it doesn’t have to mean an expensive trip to the dealership for programming. This module is a direct-fit solution that arrives at your door already programmed to your truck’s specific VIN. We handle the complex part—flashing it with the latest GM software—so you can perform a simple, straightforward installation and get your truck back to 100%.
A Technician’s Notebook
I remember a 2011 Silverado 2500 that came into the shop. The customer had just used his 4WD during a snowstorm, but now the selector switch was unresponsive and the light on the dash wouldn’t stop flashing. He was worried about a major mechanical failure in the transfer case itself. After a quick scan, we pulled code U0102: Lost Communication with Transfer Case Control Module. Instead of a costly transfer case rebuild, the fix was a new TCCM. With a pre-programmed module like this one, we had him back on the road in under 30 minutes, saving him hundreds in diagnostic and programming fees at the dealer.
Is Your Truck Showing These Symptoms?
- ✔ “Service 4WD” or “Service Four Wheel Drive” message on the instrument cluster.
- ✔ Inability to switch between 2WD, 4HI, Auto, or 4LO modes.
- ✔ The 4WD selector switch lights are flashing or completely off.
- ✔ The truck is stuck in a single 4WD mode.
- ✔ Diagnostic Trouble Codes (DTCs) such as U0102, C0327, or C0306 are present.
- ✔ A noticeable delay or clunking noise when the system attempts to engage.
A Straightforward Guide to Installation
Installing your new 2007-2013 Sierra 1500 TCCM is a job most DIYers can handle with basic tools. Since it comes pre-programmed, there’s no need for a scan tool or dealer visit after the swap.
- Safety First: Disconnect the negative terminal from your truck’s battery to prevent any electrical shorts.
- Locate the Module: The TCCM is typically located on the driver’s side of the dashboard, up and 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. Once disconnected, remove the bolts or nuts holding the module bracket in place.
- Install the New Module: Mount your new, pre-programmed TCCM in the same location and secure it with the original hardware.
- Reconnect: Firmly plug the electrical connectors into the new module. You should hear a click as they lock into place.
- Final Steps: Reinstall the lower dash panel and reconnect the negative battery terminal. Start the truck and test the 4WD selector switch to confirm proper operation.
Will This Fit My Truck?
This TCCM is a guaranteed fit for a wide range of GM trucks and SUVs. It is a direct replacement for part numbers 24261367, 12588096, 24239190, 24240487, 24241143, 24241970, 24242480, 24243084, 24243085, 24249095, and 24252878. Please verify your vehicle is on the list below.
- AVALANCHE 1500: 2008-2013
- SIERRA 1500 PICKUP: 2007 (New Body Style), 2008-2013
- SIERRA 2500/3500 PICKUP: 2007 (New Body Style), 2008-2014
- SIERRA DENALI (1500/2500/3500): 2007-2014
- SILVERADO 1500 PICKUP: 2007 (New Body Style), 2008-2013
- SILVERADO 2500/3500 PICKUP: 2007 (New Body Style), 2008-2014
- SUBURBAN 1500/2500: 2008-2014
- TAHOE: 2008-2014
- YUKON & YUKON XL (1500/2500): 2007-2014
Frequently Asked Questions
Why do you need my VIN?
We require your Vehicle Identification Number (VIN) to program the module with the exact software and calibrations for your truck’s specific options. This ensures perfect compatibility and function right out of the box, eliminating the need for a dealer visit.
Is this a difficult part to install myself?
Not at all. For most DIYers with basic hand tools, this is a 30-45 minute job. The module is located under the driver’s side dashboard and is typically held in by a few bolts. Since it’s pre-programmed, it’s a true plug-and-play installation.
Will this fix my ‘Service 4WD’ light?
In the vast majority of cases where the TCCM has failed, yes. Common symptoms of a bad TCCM include the ‘Service 4WD’ light, an inoperative selector switch, and communication error codes. This module is designed to resolve those specific issues.
What if I order and it doesn’t solve my problem?
While this module fixes the most common 4WD electronic issues, we always recommend proper diagnosis. If the issue lies with the transfer case motor or selector switch, this part won’t help. Please check our return policy or contact us for diagnostic advice before ordering.
Are these new or used modules?
This is a high-quality, tested replacement part that has been inspected and prepared for programming. It is guaranteed to function correctly and is loaded with the newest GM software for your vehicle.