Restore Peak Performance to Your Cadillac’s Transmission
Are you experiencing frustrating and unpredictable transmission behavior in your 2004-2005 Cadillac CTS or 2004-2006 SRX? Issues like harsh shifting, getting stuck in gear, or a lit check engine light can point directly to a failing Transmission Control Module (TCM). The TCM is the electronic brain of your automatic transmission, responsible for coordinating shift points, torque converter lockup, and fluid pressure. When it fails, the entire driving experience is compromised. This replacement TCM, part number 24223376, is the definitive solution to restore the smooth, responsive performance you expect from your Cadillac.
From the Diagnostic Bay
We had a 2005 Cadillac SRX come into the shop with a classic complaint: “It slams into gear and sometimes won’t shift at all.” The customer had already spent a small fortune at another shop that insisted the transmission needed a complete rebuild. We scanned the vehicle and found multiple communication error codes pointing to the TCM. Instead of a costly and unnecessary transmission teardown, we sourced a VIN-programmed TCM. After a straightforward installation in the RH front engine compartment, the vehicle shifted perfectly. It’s a common scenario—the complex electronics fail, not the heavy-duty mechanical parts. Always diagnose the brain before performing surgery on the body.
Common Symptoms of a Failing Cadillac TCM
A faulty TCM can manifest in various ways, often mimicking mechanical transmission failure. Before you condemn your transmission, check if your vehicle is exhibiting any of these common electronic control issues:
- ✔ Harsh, erratic, or delayed gear shifts.
- ✔ The transmission getting stuck in a single gear (often called “limp mode”).
- ✔ Illumination of the Check Engine Light with transmission-related fault codes (e.g., U-codes for communication loss, P-codes for solenoids).
- ✔ Inaccurate gear position indicator on the instrument cluster.
- ✔ Complete loss of forward or reverse gears intermittently.
- ✔ A noticeable decrease in fuel economy due to inefficient shifting.
The Critical Importance of VIN Programming for Your 2004-2005 CTS TCM
Simply installing a used or new TCM from another vehicle will not work. Modern vehicles like your Cadillac rely on a network of modules that communicate with each other. The 2004-2005 CTS TCM must be specifically programmed with your vehicle’s unique Vehicle Identification Number (VIN) to function. This programming ensures the TCM has the correct software and calibration files to work seamlessly with your engine controller (ECM), anti-lock brake system (ABS), and other vehicle systems. Our service eliminates the need for an expensive trip to the dealership. We handle the programming for you before the part ever leaves our facility. You provide your VIN at checkout, and we flash the module with the latest, most stable software updates from GM. This makes the installation process truly plug-and-play, saving you time, money, and hassle.
Guaranteed Fitment and Compatibility
This module is a direct replacement for several part numbers, ensuring wide compatibility. It is guaranteed to fit and function in the following vehicles:
- Cadillac CTS: 2004-2005 (Located in RH front engine compartment)
- Cadillac SRX: 2004-2005 (Located in RH front engine compartment)
- Cadillac SRX: 2006 (3.6L, Located in RH front engine compartment)
- Cadillac SRX: 2006 (4.6L, ID 24229791, Located in RH front engine compartment)
This part is a direct replacement for the following part numbers: 24223376, 24226571, 24229790, and 24240284. By purchasing from us, you receive a part that is not only physically compatible but electronically matched to your exact vehicle.
Frequently Asked Questions
Do I need to have this TCM programmed by a dealer?
No. The main benefit of our service is that we program the module to your vehicle’s specific VIN before we ship it. This makes it a plug-and-play installation, saving you the time and expense of a dealership visit.
Where do I provide my VIN?
You can provide your 17-digit VIN during the checkout process. You can find your VIN on the driver’s side dashboard (visible through the windshield), on the driver’s side door jamb sticker, or on your vehicle’s registration and insurance documents.
Where is this module located on my vehicle?
For the specified Cadillac CTS and SRX models, the Transmission Control Module is located in the engine compartment on the right-hand (passenger) side. It’s typically housed in a protective box with other electronic modules.
What happens if I install a TCM that isn’t programmed?
An unprogrammed TCM will not allow the vehicle to operate correctly. It will fail to communicate with the other modules, resulting in a no-start condition, immediate check engine lights, and the transmission remaining in limp mode. VIN programming is not optional; it is essential for the part to function.
Is this a reliable, long-term fix?
Absolutely. We address the common failure points of the original module and load it with the latest GM software updates, which often correct factory flaws. This provides a durable and dependable solution to your transmission problems.