Restore Peak Transmission Performance in Your Cadillac
Is your 2004-2005 Cadillac XLR or 2005 STS exhibiting frustrating and unpredictable transmission behavior? Issues like harsh shifting, delayed engagement, or an illuminated Check Engine Light can often be traced back to a failing Transmission Control Module (TCM). The TCM is the electronic brain of your automatic transmission, responsible for orchestrating precise gear changes and ensuring smooth operation. When it falters, the entire driving experience is compromised. This replacement Transmission Control Module, compatible with part numbers 24222734, 24229789, and 24240283, is the definitive solution to get your luxury vehicle back on the road and performing as it should.
From the Diagnostic Bay
We recently had a 2005 Cadillac XLR come into the shop with a peculiar issue. The owner complained of intermittent ‘No Shift’ conditions and a flashing gear indicator. Scans showed communication error codes with the TCM, but they weren’t consistent. After checking the wiring harness and connectors, we suspected the module itself was failing internally, likely due to heat cycles over the years. Swapping in a pre-programmed TCM like this one resolved all the issues instantly. The key was having a module flashed specifically to the car’s VIN, which avoided a costly and time-consuming trip to the dealership for programming. It turned a complex electronic issue into a straightforward component replacement.
Symptoms of a Failing 2004-2005 XLR TCM
A faulty TCM can manifest in various ways, often being misdiagnosed as an internal transmission failure. Before considering a costly transmission replacement, check if your vehicle is showing any of these common signs of a bad module:
- ✔ Harsh or erratic shifting between gears
- ✔ Inability to shift into or out of a specific gear (stuck in ‘limp mode’)
- ✔ Delayed engagement when shifting from Park to Drive or Reverse
- ✔ Illuminated Check Engine Light with transmission-related fault codes (e.g., P0700 series)
- ✔ Poor fuel economy due to inefficient shifting
- ✔ Complete loss of communication with the TCM, preventing diagnostics
- ✔ Inaccurate gear indicator on the dashboard
The Plug-and-Play Solution: Programmed to Your VIN
The biggest hurdle when replacing a modern vehicle module is the need for vehicle-specific software. This isn’t a part you can simply pull from a shelf and install. Our process eliminates that obstacle. When you purchase this 2004-2005 XLR TCM, you provide us with your vehicle’s Vehicle Identification Number (VIN). Our technicians then use official GM equipment to flash the module with the latest, most up-to-date software specifically for your car’s configuration. This ensures perfect compatibility and communication with the Engine Control Module (ECM) and other vehicle systems right out of the box.
This critical programming service means:
- No Dealer Visit Required: Save hundreds of dollars and significant time by avoiding the dealership’s programming fees and scheduling delays.
- Guaranteed Compatibility: By using your VIN, we ensure the software loaded onto the module perfectly matches your vehicle’s original specifications and any subsequent factory updates.
- Simple Installation: Once you receive the programmed module, the installation is a direct mechanical swap. Locate the old TCM in the right-hand engine compartment, disconnect it, and install the new one. No further electronic work is needed.
Fitment and Part Number Compatibility
This module is a direct replacement for the following vehicles and part numbers. Please verify that your vehicle and original part number are listed below for guaranteed fitment.
- Makes/Models:
- 2004-2005 Cadillac XLR
- 2005 Cadillac STS
- Compatible Part Numbers:
- 24222734
- 24229789
- 24240283
Don’t let a faulty transmission module keep your Cadillac parked. Restore the smooth, responsive, and reliable performance you expect with this professionally programmed 2004-2005 XLR TCM. It’s the most efficient and cost-effective way to solve complex electronic transmission problems.
Frequently Asked Questions
Do I need to have this module programmed by a dealer after I receive it?
No. The main benefit of our service is that the module arrives at your door fully programmed to your vehicle’s specific VIN. It is ready for installation right out of the box, with no additional programming or dealer visits required.
How do I provide my VIN number for programming?
After you complete your purchase, you can send us your 17-digit VIN through the order notes, a follow-up email, or by replying to your order confirmation. We cannot ship the part until we have received and verified your VIN.
Is this a brand new part?
This is a high-quality, fully tested component that has been professionally inspected and verified to meet or exceed original equipment performance. It is loaded with new, vehicle-specific software from GM.
Where is the TCM located on a 2004-2005 Cadillac XLR?
The Transmission Control Module (TCM) on the 2004-2005 Cadillac XLR is typically located in the engine compartment on the right-hand (passenger) side.
What happens if I install this without programming?
An unprogrammed module will not work. It will not be able to communicate with your vehicle’s other computers, and the transmission will not shift correctly, if at all. Our mandatory VIN programming ensures this will not be an issue.