Restore Your 4×4 Capability and Confidence
Is your truck’s ‘Service 4WD’ light glaring from the dashboard? Are you unable to switch between 2WD and 4WD, or is the system shifting erratically on its own? A faulty Transfer Case Control Module (TCCM) is the most common cause of these frustrating issues on GM trucks and SUVs, leaving you without the all-weather capability you depend on. This isn’t just an inconvenience; it’s a loss of the confidence you need in your vehicle. We offer the definitive, plug-and-play solution to get your 4×4 system working like new again.
Common Symptoms & Your Solution
A failing TCCM can manifest in several ways, but they all point to a loss of control over your four-wheel-drive system. If you’re experiencing any of the following, this module is the solution you need:
- “Service 4WD” Message on the Driver Information Center (DIC)
- Inability to Switch In or Out of 4-Hi, 4-Lo, or Auto 4WD
- Selector Switch Lights Not Illuminating or Flashing
- Getting Stuck in a Single Drive Mode (e.g., 4-Hi)
- Diagnostic Trouble Codes (DTCs) such as C0306, C0327, or U0102
Our expertly prepared module is the brain of your 4×4 system. It resolves these issues by restoring proper communication and control. Because we provide a pre-programmed GM transfer case control module flashed specifically to your vehicle’s VIN, it completely eliminates the need for an expensive and time-consuming trip to the dealership for programming. This is the most efficient and reliable way to restore your vehicle’s factory-spec 4×4 operation.
Features & Benefits
- โ VIN-Programmed for You: Arrives at your door ready for a true plug-and-play installation. No dealer visit, no special tools, and no programming fees are required, saving you significant time and money.
- โ Updated GM Software: We flash each module with the latest stable software available from General Motors. This corrects known factory bugs and helps ensure smooth, reliable transfer case performance for years to come.
- โ Restores Full 4WD Function: Regain precise, reliable control over your 2-Hi, 4-Hi, 4-Lo, and Auto 4WD settings. Be ready for any terrain, job site, or weather condition with a system you can trust.
- โ Direct-Fit Replacement: Engineered to be a perfect replacement for part number 24239190 and all other compatible part numbers listed. It mounts in the factory location with the original hardware and connectors.
- โ Guaranteed Confidence: This unit is backed by our one-year replacement warranty, giving you complete peace of mind in your purchase and repair.
An Expert’s Note on VIN Programming: From over 20 years of hands-on diagnostics, I can tell you that a generic, non-programmed module is a recipe for failure in these GM trucks. The TCCM must communicate perfectly with the Engine Control Module (ECM), Body Control Module (BCM), and transmission. Without precise VIN-specific programming that accounts for your vehicle’s options (like transfer case RPO codes NQH or NQF), you’ll end up with persistent communication errors and a 4×4 system that still doesn’t work. By flashing this pre-programmed GM transfer case control module to your VIN before it ships, we ensure all systems handshake correctly the moment you plug it in, guaranteeing a successful repair.
Don’t settle for a disabled 4×4 system. This is your opportunity to restore the full capability and value of your truck or SUV with a reliable, straightforward solution. This high-quality, pre-programmed GM transfer case control module is your direct path to a lasting fix.
Frequently Asked Questions
Do I need to take this part to the dealer for programming?
Absolutely not. The main benefit of our service is that we program the module to your vehicle’s specific VIN before we ship it to you. This makes the installation a simple plug-and-play process, saving you from a costly trip to the dealership.
How do I provide my VIN?
After you complete your purchase, you will need to send us your 17-digit Vehicle Identification Number (VIN). We cannot ship your part until we receive this information, as the programming is essential for the module to function correctly in your vehicle.
Will this fix the ‘Service 4WD’ light on my dash?
In the vast majority of cases, a faulty TCCM is the direct cause of the ‘Service 4WD’ light and related 4×4 issues on these vehicles. While you should always ensure your vehicle is properly diagnosed, replacing a bad module with this pre-programmed unit is the definitive fix for the problem.
Where is the TCCM located on my truck?
On most 2007-2014 GM trucks and SUVs like the Silverado, Sierra, and Suburban, the TCCM is located high up in the driver’s side of the dashboard, to the left of the steering column. It is a small metal or plastic box with several electrical connectors.
Is this part compatible with my specific truck?
This module is compatible with a wide range of GM trucks and SUVs. Please review the detailed fitment list in the description and ensure your original part number is on our compatible numbers list. Providing your VIN for programming ensures it is a perfect match for your vehicle’s options.