Is a “Service 4WD” Light on Your Dash Ruining Your Day?
When your Sierra, Silverado, or GM SUV’s four-wheel drive system acts up, it’s more than an inconvenience—it’s a loss of capability. Whether you’re unable to engage 4WD for a tough job site, a boat ramp, or changing weather conditions, a faulty Transfer Case Control Module (TCCM) can leave your powerful truck feeling powerless. Stop guessing and replace the faulty electronic brain of your 4×4 system with a solution designed to work right out of the box.
Common Symptoms & Your Direct-Fit Solution
If you’re experiencing any of the following issues, a failing TCCM is the most likely culprit:
- “Service 4WD” message illuminated on the instrument cluster
- Inability to switch between 2HI, 4HI, and 4LO
- Selector switch lights are blinking or not working at all
- Grinding or delayed engagement when shifting the transfer case
- Diagnostic Trouble Codes (DTCs) such as C0306, C0327, C0374, or C0569
This module is the definitive fix. We take the hassle out of the repair by pre-programming it specifically to your vehicle’s VIN. This means no expensive trips to the dealership for flashing or calibration. It’s a true plug-and-play solution that restores the function and reliability you depend on. This high-quality programmed transfer case control module 24243085 is your answer to getting your truck’s crucial 4×4 system back online.
Features & Benefits
- âś” VIN-Programmed for Your Truck: We flash the module with the latest GM software using your vehicle’s unique VIN. This ensures perfect communication with your truck’s other systems, like the BCM and ECM.
- âś” No Dealer Visit Required: Save hundreds of dollars and significant downtime. This module arrives ready for installation, bypassing the need for expensive dealer-only programming tools.
- âś” Restores Full 4WD Functionality: Regain complete and reliable control of your two-speed transfer case (NQH or NQF options). Shift with confidence every time.
- âś” Direct-Fit Replacement: Engineered to be a direct replacement for a wide range of original part numbers, including 24261367, 12588096, 24239190, and more. See the full compatibility list below.
- âś” This unit is backed by our one-year replacement warranty.
An Expert’s Note on VIN Programming
As a technician with over 20 years of experience, I’ve seen countless 4WD issues on these GMT900 platform trucks. One of the biggest mistakes DIYers and even some shops make is installing a used or non-programmed TCCM. On these vehicles, the TCCM is part of a complex network. If it doesn’t have the correct software and VIN assigned to it, it won’t communicate properly with the rest of the truck. This can lead to a no-start condition, persistent error codes, or even damage to the transfer case encoder motor. Our pre-programming service isn’t just a convenience; it’s a critical step that guarantees the programmed transfer case control module 24243085 integrates seamlessly, just like the original, saving you from a world of frustration.
Don’t let a small electronic module sideline your entire truck. This is the straightforward, reliable repair that gets you back on the road and back to work. By providing your VIN at checkout, you ensure that the programmed transfer case control module 24243085 you receive is perfectly matched to your vehicle’s specific configuration.
Frequently Asked Questions
Do I need to do any programming or calibration myself?
Absolutely not. The module will arrive at your door fully programmed to the VIN you provide and ready for installation. Simply disconnect the battery, swap the old module with this new one, reconnect the battery, and you’re done.
How do I provide my Vehicle Identification Number (VIN)?
After you complete your purchase, you will need to send us your 17-digit VIN. You can typically add it as a note during checkout or reply to your order confirmation email. We cannot ship your part until we have this information.
Will this fit my truck?
This module fits a very wide range of 2007-2014 GM trucks and SUVs. Please review the detailed fitment list in this description. The best way to ensure compatibility is to match one of the listed part numbers to the number on your original module.
Where is the TCCM located on my vehicle?
On most of these GM models, the Transfer Case Control Module is located behind the dashboard on the driver’s side, to the left of the steering column. It’s typically accessible after removing the lower dash panel.
Is this a brand new part?
This is a high-quality, fully tested replacement part that is guaranteed to perform to original equipment standards. It is prepared with the latest software updates available from the manufacturer.
What if this part doesn’t solve my problem?
While this module is the most common cause of 4WD issues, other components like the encoder motor or selector switch can also fail. We recommend a proper diagnosis. If the module is found to be defective, it is covered by our one-year replacement warranty.