Restore Flawless All-Wheel-Drive Performance in Your GM Vehicle
Is your Cadillac, Pontiac, or Saturn experiencing erratic all-wheel-drive behavior, displaying a “Service AWD” light, or making unsettling noises from the drivetrain? These are classic signs of a failing Transfer Case Control Module (TCCM). This crucial component is the brain of your vehicle’s AWD system, responsible for interpreting data from various sensors and engaging the transfer case clutches to deliver optimal traction. When it fails, you’re left with a vehicle that can’t perform as it should, especially in adverse weather conditions. This replacement module, part number 24235224, is the definitive solution to get your vehicle back to factory-spec operation.
From the Diagnostic Bay
We once had a 2011 Cadillac STS come in with the owner convinced he needed a new transfer case. He described a harsh clunking sound when turning and an intermittent ‘Service AWD’ light. He had already replaced the transfer case shift motor with no success. After a quick scan, we saw communication fault codes pointing directly to the TCCM. The internal circuitry had failed, sending incorrect signals to the motor. We installed a VIN-programmed module just like this one, performed the relearn procedure, and the problem was solved completely. It saved the customer over a thousand dollars and a lot of unnecessary work. It’s a powerful reminder to always diagnose the electronics before condemning expensive mechanical parts.
Common Symptoms of a Failing TCCM
- ✔ “Service AWD” or “Service 4WD” warning light illuminated on the dash.
- ✔ Inability to switch between 2WD and AWD modes.
- ✔ Grinding, clicking, or binding noises from the transfer case, especially during turns.
- ✔ A noticeable delay or harsh engagement of the all-wheel-drive system.
- ✔ Vehicle feels like it’s stuck in 4-wheel drive on dry pavement.
- ✔ Complete loss of all-wheel-drive functionality.
- ✔ Diagnostic trouble codes (DTCs) related to the transfer case or TCCM communication.
Why Choose a VIN-Programmed Module?
This isn’t just a part; it’s a complete, ready-to-install solution. Modern vehicle electronics are highly integrated. A new module from a dealership would require an expensive visit for programming and calibration. We eliminate that step. By providing us with your Vehicle Identification Number (VIN) at checkout, you receive a module that is loaded with the latest GM-certified software specific to your vehicle’s exact configuration. This ensures seamless communication with the Engine Control Module (ECM), Transmission Control Module (TCM), and other vehicle systems right out of the box.
Understanding Your Cadillac STS Transfer Case Module
The Cadillac STS Transfer Case Module is a sophisticated computer that governs power distribution between the front and rear axles. It constantly analyzes inputs like wheel speed, steering angle, and throttle position to decide when and how much torque to send to the front wheels. A faulty module can lead to poor handling, decreased safety in slippery conditions, and even premature wear on drivetrain components. Replacing it with a properly functioning, correctly programmed unit is essential for maintaining the vehicle’s integrity and performance.
Simple Installation Process
Installation is straightforward for a qualified technician or experienced DIYer. The module is typically located on the right-hand side of the dash or in the engine compartment, depending on the model. Once the old unit is removed, this pre-programmed replacement bolts directly in its place. After connecting the electrical harnesses, a simple relearn procedure may be required, which can often be done without specialized scan tools. This plug-and-play approach saves you significant time and money on labor and dealership programming fees.
Guaranteed Compatibility
This module is a direct replacement for several original equipment part numbers, ensuring a perfect fit and function. It is compatible with the following part numbers and vehicles:
- Part Numbers: 24235224, 24239785, YLMU
- Cadillac STS: 2010-2011 (Transfer Case)
- Cadillac STS: 2007 (Transmission)
- Cadillac CTS: 2010 (Transfer Case)
- Cadillac SRX: 2007-2009 (Transmission)
- Pontiac Solstice: 2006-2010 (Transmission)
- Saturn Sky: 2007-2010 (Transmission)
Don’t let a faulty TCCM compromise your vehicle’s safety and capability. Order this pre-programmed Cadillac STS Transfer Case Module today and restore the intelligent all-wheel-drive system your vehicle was built with.
Frequently Asked Questions
Do I need to send my old module back (core charge)?
No, there is no core charge associated with this part. You can keep or dispose of your old module at your convenience.
What happens if I don’t provide my VIN?
Providing your VIN is mandatory for this part. We cannot ship the module until we receive your VIN, as the programming is specific to your vehicle’s factory options. This ensures a plug-and-play installation without the need for a trip to the dealer.
Is this a difficult part to install myself?
For someone with moderate mechanical experience, the installation is manageable. The module is typically in an accessible location (like behind the glove box or on a frame rail). The key is the pre-programming, which handles the most complex part of the job. However, we always recommend professional installation if you are not comfortable working on your vehicle’s electronics.
Will this fix my “Service AWD” light?
If the “Service AWD” light is caused by a faulty Transfer Case Control Module, this part will resolve the issue. It’s crucial to have your vehicle properly diagnosed to confirm the TCCM is the source of the problem. Common diagnostic codes for a failing TCCM include C0398, C0569, or U-series communication codes.
What is the difference between a TCCM and a TCM?
A TCCM (Transfer Case Control Module) specifically controls the all-wheel-drive or four-wheel-drive system. A TCM (Transmission Control Module) controls the shifting of the automatic transmission itself. While this module is used as a TCM in some applications (like the Solstice/Sky), for the 2010-2011 STS, its primary role is as a TCCM.