Restore Your Truck’s 4×4 Capability Instantly
Is the dreaded ‘Service 4WD’ light on your dash ruining your day? Are you stuck in two-wheel drive when you need four-wheel power? Don’t let a faulty Transfer Case Control Module (TCCM) sideline your hardworking truck or family SUV. This direct-fit, professionally programmed module is the fast, reliable solution to get your 4×4 system working like new again, without the expensive trip to a dealership.
Common Symptoms & Your Solution
A failing TCCM can cause a host of frustrating issues. If you’re experiencing any of the following, this module is the definitive solution you need:
- The “Service 4WD” warning light is constantly on.
- Inability to switch between 2WD, 4HI, and 4LO.
- The selector switch lights don’t illuminate or flash incorrectly.
- The 4×4 system gets stuck in one mode.
- Diagnostic Trouble Codes (DTCs) like C0327, C0306, or other communication errors are present.
This module is engineered to resolve these communication and command failures, restoring precise control over your vehicle’s transfer case.
Features & Benefits
- โ Plug-and-Play Installation: This module arrives pre-programmed to your vehicle’s specific VIN. No expensive trips to the dealership for flashing are requiredโsimply install it and restore your 4WD functionality.
- โ Updated GM Software: We flash each unit with the latest stable software release from General Motors, ensuring optimal performance and correcting known factory bugs for improved reliability.
- โ Guaranteed Compatibility: This unit is a direct replacement for a wide range of original part numbers, including 24261367, 12588096, and the primary GM transfer case control module 24239190, ensuring a perfect fit for your Sierra, Silverado, Tahoe, or other compatible GM vehicle.
- โ Restored 4×4 Confidence: Regain full control over your transfer case. Switch modes smoothly and reliably, knowing your four-wheel drive is ready for any weather, job site, or trail.
- โ Clear That Annoying Light: This module is designed to resolve the communication errors that trigger the “Service 4WD” warning, clearing your dash and your mind.
- โ Purchase with Assurance: This unit is backed by our one-year replacement warranty.
Expert Insight: As a tech with over 20 years on the floor, I’ve seen countless GMT900 trucks come in with 4WD issues. Often, the root cause is a failed TCCM that’s lost its programming or suffered internal failure. The biggest headache for owners isn’t the part replacementโit’s the mandatory dealer programming. Our VIN-programming service cuts out that expensive, time-consuming step. You’re not just buying a part; you’re buying a complete, ready-to-install solution that gets your truck back to work, fast.
Frequently Asked Questions
How does the VIN programming process work?
It’s simple! After you complete your purchase, just provide us with your 17-digit Vehicle Identification Number (VIN). Our technicians will use it to flash the module with the correct GM software for your truck’s specific options and configuration before we ship it to you.
Do I need any special tools to install this?
No special programming tools are needed. Installation typically requires basic hand tools like a socket set to access and replace the module, which is usually located behind the lower dash panel on the driver’s side. It’s designed to be a straightforward DIY job.
Will this fix my “Service 4WD” light?
In the vast majority of cases, yes. The “Service 4WD” light is most commonly triggered by a faulty TCCM. If your vehicle has been properly diagnosed and the TCCM is the culprit, this pre-programmed module is the correct solution to turn off the light and restore full function.
Is this compatible with my specific truck?
This module fits a wide range of 2007-2014 GM trucks and SUVs, including the Sierra, Silverado, Tahoe, and Suburban. Please review the detailed compatibility list on this page to confirm your vehicle is included. For total peace of mind, send us your VIN, and we’ll be happy to verify the fitment for you.
What part number will I receive?
You will receive a fully compatible module that supersedes or directly replaces the original GM transfer case control module 24239190 and the other part numbers listed. We ensure the hardware you get is correct for your vehicle’s application and is programmed with the latest software.