Is your Cadillac STS or XLR suffering from harsh, erratic shifting or a frustrating Check Engine Light? A faulty Transmission Control Module (TCM) can disrupt the sophisticated performance you expect from your vehicle, turning a smooth, luxurious drive into a jarring and stressful experience. This isn’t just an inconvenience; it’s a compromise on the very essence of your Cadillac. We offer the definitive solution: a precision-programmed TCM that restores the crisp, seamless gear changes and responsive power delivery you’ve been missing.
Common Symptoms & Your Direct Solution
If you’re experiencing any of the following issues, a failing TCM is the most likely culprit. This module is the direct-fit, pre-programmed solution for a wide range of transmission problems, including:
- Harsh or delayed gear engagement
- Slipping between gears or unexpected downshifts
- The vehicle entering “limp mode,” stuck in one gear
- Check Engine Light illumination with transmission-related Diagnostic Trouble Codes (DTCs) such as P0700, P0751, P0756, or U0101.
- Complete loss of communication with the transmission module
Instead of paying for expensive diagnostic time and dealership programming fees, this module arrives ready for installation. It’s the most efficient way to solve the problem correctly the first time. By using a quality, correctly programmed 2005 Cadillac STS TCM 24229789, you are ensuring the longevity and performance of your vehicle’s complex drivetrain.
Features & Benefits
- ✔ VIN-Specific Programming Included: We flash this module with the latest GM software updates using your vehicle’s VIN. This ensures perfect communication with your car’s other systems, eliminating the need for a trip to the dealer.
- ✔ Restore Factory Shift Quality: Erase harsh shifts and hunting for gears. This TCM restores the smooth, intelligent shifting logic your Cadillac was designed with, improving both comfort and performance.
- ✔ Guaranteed Fit and Function: A direct replacement for part numbers 24222734, 24229789, and 24240283, ensuring a seamless installation for the 2005 STS and 2004-2005 XLR.
- ✔ Plug-and-Play Installation: Because the programming is done before we ship, installation is straightforward for a qualified technician or experienced DIYer. Simply install the part and perform any necessary relearn procedures.
- ✔ Purchase with Confidence: This unit is backed by our one-year replacement warranty. Your investment is protected, giving you complete peace of mind.
Expert Insight: The Critical VIN-Match Advantage
A modern vehicle’s Transmission Control Module doesn’t just manage the transmission; it’s a key node in a complex data network, constantly communicating with the Engine Control Module (ECM), ABS, and more. Simply installing a used or non-programmed TCM will result in a no-start condition or severe operational faults because the modules cannot verify each other’s security credentials. By pre-programming this 2005 Cadillac STS TCM 24229789 to your exact VIN, we ensure this digital handshake happens flawlessly, saving you hundreds in dealer fees and countless hours of frustration.
Frequently Asked Questions
Do I need to have this module programmed by a dealer?
No. We handle all the programming for you before the part is shipped. It will arrive at your door flashed with the latest GM software and coded specifically to your vehicle’s VIN, making it ready for installation.
How do I provide my vehicle’s VIN?
After you complete your purchase, you can add your VIN to the ‘notes’ section of your order. If you forget, we will contact you via email to request it. We cannot ship your part until we have your VIN to ensure correct programming.
Will this fit my 2004 Cadillac XLR?
Yes, this TCM is the correct replacement for both the 2005 Cadillac STS and the 2004-2005 Cadillac XLR. We use your VIN to confirm 100% compatibility before programming and shipping.
What common problems does this part solve?
This module is the solution for a wide range of transmission issues, including harsh shifting, getting stuck in gear (limp mode), no communication with the TCM, and various transmission-related fault codes (P07xx series codes).
What is the warranty for this part?
This unit is backed by our one-year replacement warranty. We stand behind our products to give you confidence in your repair.
Is this the exact part I need?
This module replaces part numbers 24222734, 24229789, and 24240283. If you have a 2005 STS or 04-05 XLR with transmission issues, this is very likely the solution. Providing your VIN allows us to verify the perfect match for your specific vehicle, ensuring you receive the correct 2005 Cadillac STS TCM 24229789.