Is Your Cadillac Shifting Erratically or Stuck in Limp Mode?
If you’re experiencing harsh shifting, delayed engagement into gear, or a persistent check engine light, a failing Transmission Control Module (TCM) is often the culprit. The TCM is the electronic brain of your automatic transmission, responsible for orchestrating smooth gear changes and communicating with the engine computer. When it fails, it can mimic the symptoms of a catastrophic transmission failure, leading to confusion and costly misdiagnoses. This replacement module, part number 24235224, is the definitive solution to restore your vehicle’s performance and drivability.
From the Diagnostic Bay
We had a 2008 Cadillac SRX come into the shop with the classic signs: erratic shifting and a P0700 trouble code. The owner had already been quoted over $3,500 for a complete transmission rebuild by another shop. After running our own diagnostics, we found no mechanical faults within the transmission itself. All signs pointed to the TCM. Instead of a costly and unnecessary rebuild, we installed a VIN-programmed TCM. The customer drove away with a perfectly shifting vehicle for a fraction of the initial quote. It’s a powerful reminder to always diagnose the electronics before condemning the expensive mechanical hardware.
Common Symptoms of a Failing GM Transmission Control Module
- ✔ Check Engine Light is illuminated with transmission-specific codes (e.g., P0700, P0751, U0101).
- ✔ Harsh, delayed, or erratic shifting between gears.
- ✔ The vehicle gets stuck in one gear (often referred to as ‘limp mode’).
- ✔ Inability to shift into drive or reverse.
- ✔ ‘Service Transmission’ or similar warning messages on the dashboard.
- ✔ Poor fuel economy due to inefficient gear selection.
- ✔ Loss of communication between the TCM and other vehicle modules.
The Direct-Fit Solution: Your Pre-Programmed 2007 STS TCM
Don’t settle for a generic, off-the-shelf module that requires expensive dealership programming. We take the guesswork and extra cost out of the equation. This 2007 STS TCM is meticulously tested and programmed specifically for your vehicle using the Vehicle Identification Number (VIN) you provide at checkout. This critical step ensures that the module has the latest GM software updates and communicates flawlessly with your vehicle’s engine computer and other systems right out of the box. It’s the most reliable and efficient way to get your car back on the road.
By programming the module before shipment, we eliminate the need for you to have the vehicle towed to a dealer or specialized shop for flashing. This saves you significant time, money, and hassle. The process is simple: place your order, provide your VIN, and we handle the complex programming. You’ll receive a part that is ready for installation.
Guaranteed Compatibility and Fitment
This module is a direct replacement for several original equipment part numbers, ensuring wide compatibility across various GM models. Please verify your original part number or consult the fitment list below. If you are unsure, contact us with your VIN, and we will confirm compatibility for you.
- Primary Part Number: 24239785
- Interchangeable Part Numbers: 24235224, YLMU
This part is confirmed to fit the following vehicles:
- Cadillac STS: 2007 (Transmission)
- Cadillac STS: 2010-2011 (Transfer Case, located at RH dash)
- Cadillac SRX: 2007-2009 (Transmission, located at RH front engine compartment)
- Cadillac CTS: 2010 (Transfer Case, located at RH dash, ID 2423522, YLMU, or 24239785)
- Pontiac Solstice: 2006-2010 (Transmission, located at LH front frame rail)
- Saturn Sky: 2007-2010 (Transmission, located at LH front frame rail)
Frequently Asked Questions
Why do you need my vehicle’s VIN?
Your Vehicle Identification Number (VIN) is essential for us to load the correct, vehicle-specific software and calibrations onto the TCM. This ensures the module works perfectly with your car’s engine, options, and other electronic systems, preventing compatibility issues and error codes.
Is this part difficult to install?
The physical installation of the TCM varies in difficulty depending on the vehicle model and its location. While it can be a DIY job for an experienced home mechanic, we recommend professional installation to ensure it is done correctly. After installation, some vehicles may require a transmission fluid level check or a simple ‘relearn’ procedure that can be performed by a qualified technician.
Will this 100% fix my transmission problems?
This module will resolve issues directly caused by a faulty TCM. It is a very common point of failure for the symptoms listed above. However, it will not fix underlying mechanical problems within the transmission, such as worn clutches or a bad valve body. Proper diagnosis is key, and we recommend confirming the TCM is the fault before ordering.
What is the warranty on this TCM?
This part comes with a standard warranty that covers defects in the module itself. Please refer to our website’s warranty page for the specific terms and duration. The warranty ensures you receive a reliable, functional part for your vehicle.
Is this a new or used part?
This is a high-quality, fully tested original equipment component. Each module undergoes a rigorous inspection and verification process to ensure it meets or exceeds OEM performance standards before it is programmed and shipped to you.