Tired of That Annoying “Service 4WD” Light?
There’s nothing more frustrating than needing your truck’s four-wheel drive and finding it unresponsive. Whether you’re stuck with flashing indicator lights, the inability to shift out of 2WD, or a persistent “Service 4WD” message on your dash, a faulty Transfer Case Control Module (TCCM) is often the culprit. This isn’t just an inconvenience; it’s a loss of the core capability you rely on. Stop guessing and replace the brain of your 4×4 system with a solution designed to work right out of the box.
Common Symptoms & Your Solution
If you’re experiencing any of the following, this module is the definitive fix you need:
- “Service 4WD” light is illuminated
- Selector switch lights are flashing or not working
- Vehicle will not shift into or out of 4-High or 4-Low
- Grinding or clunking noises during attempted shifts
- Diagnostic Trouble Codes (DTCs) related to the transfer case system
This isn’t just a replacement part; it’s a complete, hassle-free solution. We use your vehicle’s VIN to flash this programmed 24241970 transfer case control module with the latest, most stable software updates directly from GM. This critical step ensures perfect communication between the TCCM and your truck’s other systems, eliminating the need for an expensive trip to the dealership for programming.
Features & Tangible Benefits
- โ Pre-Programmed to Your VIN: Your module arrives ready for a true plug-and-play installation. Simply provide your VIN at checkout, and we handle the complex programming for you, saving you time and hundreds in dealer fees.
- โ Loaded with Latest GM Software: We flash the unit with the most current updates, which often correct the very factory flaws that caused the original module to fail.
- โ Restores Full 4WD Functionality: Regain complete, reliable control over your 4×4 system. Shift smoothly and confidently, knowing your truck is ready for any road or weather condition.
- โ Guaranteed Compatibility: This module is a direct replacement for a wide range of original part numbers, ensuring a perfect fit and function for your specific Sierra, Silverado, Tahoe, or other compatible GM vehicle.
- โ This unit is backed by our one-year replacement warranty. Enjoy the confidence that comes with a quality part and dedicated support.
Expert Insight from the Shop Floor
As a tech with over 20 years on the line, I’ve seen countless GM trucks come in with these exact 4WD issues. The original TCCMs were susceptible to software glitches and internal corrosion. Many people make the mistake of buying a used module from a junkyard, only to find it won’t work because it’s not programmed for their specific vehicle. That’s a wasted afternoon and wasted money. Our process of flashing the module with your VIN isn’t just a convenienceโit’s the correct, modern way to perform this repair, ensuring a permanent fix the first time.
Don’t let a faulty module sideline your truck’s capabilities. This programmed 24241970 transfer case control module is the most reliable and cost-effective way to get your 4×4 system back to factory-perfect operation. Install it with confidence and get back to driving a fully capable truck.
Frequently Asked Questions
How does the VIN programming process work?
After you complete your purchase, you will need to provide us with your vehicle’s 17-digit VIN. Our technicians use this number to access the specific software and calibration files for your truck from GM’s database. We then flash the module with this data before shipping it to you.
Is this part truly plug-and-play?
Yes. Because we pre-program the module to your vehicle, it is ready to be installed without any further programming or dealer intervention. In most cases, it’s a simple bolt-in, plug-in installation. Any existing trouble codes should be cleared after installation.
What are the most common signs of a failing TCCM?
The most common symptom is the ‘Service 4WD’ light on the dashboard. Other signs include the 4WD selector switch lights flashing, an inability to shift between 2WD and 4WD, or the system getting stuck in one mode.
Will this fix the “Service 4WD” light on my truck?
In the vast majority of cases where the TCCM is the diagnosed point of failure, yes. This module is the ‘brain’ of the 4WD system, and replacing a faulty one with our correctly programmed unit will resolve the issue and allow the light to be cleared.
Where is the TCCM located on my vehicle?
On most compatible GM trucks and SUVs from this era, the Transfer Case Control Module is located on the driver’s side of the dashboard, up and to the left of the steering column. It’s typically a black box with several electrical connectors.