Regain Control of Your 4×4 System
Is that frustrating “Service 4WD” light glaring at you from the dashboard of your 2008-2013 Chevrolet Avalanche? Are you unable to switch between 2WD and 4WD, leaving you unprepared for bad weather or tough terrain? You’re not dealing with a minor glitch; you’re facing a failure of the transfer case control module (TCCM), the electronic brain of your truck’s four-wheel-drive system. This isn’t just an inconvenience—it’s a capability and safety issue. Fortunately, there’s a straightforward, reliable solution that doesn’t involve an expensive trip to the dealership.
This replacement TCCM, part number 24243084, is the definitive fix for your truck’s 4×4 woes. The most significant benefit? We program it specifically to your vehicle’s VIN before it ships. This means it arrives at your door ready for a true plug-and-play installation, loaded with the latest GM software updates. You bypass the costly programming fees and diagnostic hours at a repair shop, saving you time and hundreds of dollars. This is the exact-fit, properly calibrated component you need to restore your Avalanche’s all-terrain functionality.
From the Diagnostic Bay
I remember a 2011 Silverado that came into my shop with the classic “Service 4WD” light. The owner, a determined DIYer, had already replaced the 4WD selector switch and the transfer case encoder motor, spending nearly $400 on parts that didn’t solve the problem. His frustration was palpable. After a quick scan, I pulled code U0102: Lost Communication with Transfer Case Control Module. The issue was never the motor or the switch; it was the TCCM itself. We installed one of these pre-programmed modules, and in under 20 minutes, the 4×4 system was shifting perfectly and the light was gone. This experience underscores a critical point: diagnosing correctly saves you money, and starting with a pre-programmed 2008-2013 Avalanche 1500 TCCM is often the most direct path to a successful repair.
Is Your Truck Showing These Symptoms?
A failing TCCM will present several distinct warning signs. If you’re experiencing any of the following, this module is the likely solution:
- ✔ Persistent “Service 4WD” or “Service Four Wheel Drive” message on the instrument cluster.
- ✔ Inability to shift the transfer case into or out of 4-High, 4-Low, or 2WD.
- ✔ The 4WD selector switch lights don’t illuminate or flash without engaging.
- ✔ Diagnostic Trouble Codes (DTCs) stored in the system, such as U0102 (Lost Communication With TCCM), C0327 (Encoder Circuit Malfunction), or other C-series and U-series codes related to the transfer case.
- ✔ A grinding or clunking noise when attempting to shift drive modes, as the module fails to properly command the encoder motor.
A Straightforward Guide to Installation
Installing your new 2008-2013 Avalanche 1500 TCCM is a job most DIYers can handle in their own driveway with basic tools. Since it comes pre-programmed, no special electronic tools are needed.
- Safety First: Disconnect the negative terminal from your vehicle’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, often secured to a metal bracket. 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, unbolt or unclip the old TCCM from its mounting bracket.
- Install the New Module: Mount the new, pre-programmed TCCM onto the bracket, ensuring it’s secure. Reconnect the electrical connectors, making sure they click firmly into place.
- Final Steps: Reinstall any dash panels you removed. Reconnect the negative battery terminal. Turn the ignition to the ‘On’ position (without starting the engine) and test the 4WD selector switch. The lights should function correctly, and you should hear the transfer case motor engage as you cycle through the modes.
Verified Vehicle Compatibility
This module is a direct-fit replacement for a wide range of GM trucks and SUVs. Please verify your vehicle is on this list. This part is a replacement for multiple OEM part numbers, including: 24261367, 12588096, 24239190, 24240487, 24241143, 24241970, 24242480, 24243084, 24243085, 24249095, and 24252878.
- AVALANCHE 1500 2008-2013 (LH dash)
- SIERRA 1500 PICKUP 2007 (New Style, opt NQH), 2008-2013
- SIERRA 2500/3500 PICKUP 2007 (New Style), 2008-2014
- SIERRA DENALI 2007-2010
- SIERRA DENALI 2500/3500 2011-2014
- SILVERADO 1500 PICKUP 2007 (New Style, opt NQH), 2008-2013
- SILVERADO 2500/3500 PICKUP 2007 (New Style), 2008-2014
- SUBURBAN 1500 2008-2014
- SUBURBAN 2500 2008-2013
- TAHOE 2008-2014
- YUKON & YUKON XL 1500 2007-2014
- YUKON XL 2500 2008-2013
Frequently Asked Questions
Do I need to do any programming myself?
No. We handle all the programming before we ship the part. You just need to provide your vehicle’s 17-digit VIN during checkout. The module will arrive ready to install.
Where is the TCCM located on my 2010 Avalanche?
The Transfer Case Control Module is located inside the cab, on the driver’s side. It’s mounted to a bracket high up in the dashboard, to the left of the steering column.
Will this fix a U0102 communication code?
Yes, in the vast majority of cases. The U0102 code indicates a loss of communication with the TCCM, which is a primary symptom of an internal module failure. This part is designed to resolve that specific issue.
Is this a new or used part?
This is a high-quality, tested replacement part that is guaranteed to function correctly. It is programmed with the latest software from GM for optimal performance and reliability.
What happens if I don’t provide my VIN?
Providing your VIN is essential for the programming process. We cannot ship the module until we receive your VIN, as the programming ensures it communicates correctly with your specific vehicle’s other systems.