Restore Your Truck’s 4×4 Capability Instantly
Is that dreaded “Service 4WD” light glaring at you from the dash of your 2011-2014 Sierra Denali 3500? Are you stuck in two-wheel drive, unable to shift, or hearing unsettling noises when you try? As a technician with over two decades of experience, I’ve seen this exact scenario hundreds of times. The problem is almost always a failed Transfer Case Control Module (TCCM)—the electronic brain of your 4×4 system.
Don’t let a faulty module sideline your heavy-duty truck. This isn’t just an inconvenience; it’s a loss of the core capability you depend on for towing, hauling, and navigating tough conditions. We offer the most straightforward and reliable solution: a replacement TCCM, part number 24242480, that arrives at your door fully programmed to your truck’s specific VIN. This means no expensive trip to the dealership for programming, no special scan tools required. It’s a true plug-and-play fix that gets you back in control.
Case Study: The $2000 Save
A customer brought in his ’12 Sierra 3500, convinced he needed a new transfer case. The quote from another shop was over $2,500. His 4WD was completely unresponsive. After a quick scan, I saw communication codes pointing to the TCCM. Instead of a massive mechanical job, we swapped in a VIN-programmed module like this one. In under 30 minutes, his 4×4 system was working perfectly. He saved thousands of dollars and a week of downtime, all because he addressed the electronic root cause first. This module is often the simple fix for what seems like a catastrophic failure.
Common Signs of a Failing TCCM
If you’re experiencing any of the following, a faulty TCCM is the likely culprit. In my shop, I’ve diagnosed countless GM trucks where these exact symptoms pointed directly to this module.
- ✔ “Service 4WD” or “Service Four Wheel Drive” message on the instrument cluster.
- ✔ Inability to switch between 2HI, 4HI, and 4LO.
- ✔ The selector switch lights don’t illuminate or flash without engaging.
- ✔ Getting stuck in a single 4WD mode or in neutral.
- ✔ Diagnostic Trouble Codes (DTCs) such as C0327, C0398, or U0102 stored in the system.
- ✔ A noticeable delay or grinding sound when the transfer case attempts to shift.
A Straightforward Guide to Installation
Replacing the TCCM is a job most DIYers can handle in their own driveway with basic tools. Our pre-programmed module makes it even easier.
- Safety First: Disconnect the negative terminal from your truck’s battery to prevent any electrical shorts.
- Locate the Module: On most 2011-2014 Sierra Denali 3500 trucks, the TCCM is 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, so be gentle. Then, unbolt the module from its mounting bracket.
- Install the New Module: Bolt the new, pre-programmed TCCM into place. Reconnect the electrical connectors, ensuring they click securely into position.
- Final Steps: Reinstall any dash panels you removed and reconnect the negative battery terminal. Start the truck and test your 4WD system by switching through the modes. The “Service 4WD” light should be gone!
Guaranteed Fitment for Your GM Truck or SUV
This module is a direct replacement for multiple part numbers and is guaranteed to fit the following vehicles. We program it specifically for your VIN to ensure flawless communication with your truck’s systems.
SIERRA 1500 PICKUP 07 (New Body Style)
SIERRA 1500 PICKUP 08-13
SIERRA 2500 PICKUP 07 (New Body Style)
SIERRA 2500 PICKUP 08-14
SIERRA 3500 PICKUP 07 (New Body Style)
SIERRA 3500 PICKUP 08-14
SIERRA DENALI 07-10
SIERRA DENALI 2500 11-14
SIERRA DENALI 3500 11-14
SILVERADO 1500 PICKUP 07 (New Body Style)
SILVERADO 1500 PICKUP 08-13
SILVERADO 2500 PICKUP 07 (New Body Style)
SILVERADO 2500 PICKUP 08-14
SILVERADO 3500 PICKUP 07 (New Body Style)
SILVERADO 3500 PICKUP 08-14
SUBURBAN 1500 08-14
SUBURBAN 2500 08-13
TAHOE 08-14
YUKON & YUKON XL 07-14
Frequently Asked Questions
Why do I need to provide my VIN?
Your Vehicle Identification Number (VIN) allows us to program the TCCM with the exact software and calibrations for your truck’s specific options. This ensures it communicates perfectly with the engine, transmission, and ABS systems, making the installation truly plug-and-play.
Is this a difficult part to install myself?
Not at all. For most DIYers with basic hand tools, this is a 30-60 minute job. The main challenge is accessing the module’s location under the dash. Our pre-programming eliminates the most difficult part—the software setup.
Will this fix my “Service 4WD” light?
In the vast majority of cases, yes. The TCCM is the most common point of failure for the symptoms listed above, and a new, correctly programmed module is the definitive fix for a faulty one, which will clear the light.
What if I install it and it doesn’t solve the problem?
While this module fixes most 4WD electronic issues, we always recommend a proper diagnosis. If the new module doesn’t resolve your issue, the problem may lie with the transfer case encoder motor, the selector switch, or wiring. Our team is here to help with diagnostic advice if needed.
Is this compatible with other part numbers?
Yes, this module replaces a wide range of original GM part numbers, including 24261367, 12588096, 24239190, 24240487, and many others listed in the compatibility chart. It’s a fully updated, reliable replacement.