Is your 2005-2006 Chevrolet SSR suffering from unpredictable, harsh shifting or getting stuck in gear? As a technician with over two decades of experience, I’ve seen countless transmission issues that point directly to a failing Transmission Control Module (TCM). This isn’t just an inconvenience; it’s a critical failure that affects your vehicle’s performance, safety, and fuel economy. This OEM-quality T42 TCM, part number 24256960, is the definitive, reliable solution to restore the smooth, responsive shifting your SSR was built for.
The TCM is the brain of your automatic transmission, constantly communicating with the engine computer to manage shift points, torque converter clutch engagement, and line pressure. When it fails, the symptoms can be frustrating and often misdiagnosed. This module comes pre-programmed to your SSR’s specific Vehicle Identification Number (VIN), ensuring it works perfectly right out of the box. You can skip the expensive trip to the dealership for programming—this is a true plug-and-play fix for the DIYer or professional mechanic.
A Technician’s Notebook
I remember a 2006 Trailblazer SS (which uses a similar T42 system to the SSR) that came into my shop. The owner had already spent a small fortune replacing two shift solenoids based on a generic P0750-series code, but the harsh 1-2 shift and intermittent limp mode persisted. A quick data stream check showed erratic commands from the TCM. The internal drivers were failing, a common issue I’ve diagnosed on over 500 of these T42 modules. We installed one of our VIN-programmed TCMs, and in less than an hour, the truck was shifting perfectly. The customer could have saved hundreds of dollars and weeks of frustration by addressing the root cause first: the 2005-2006 SSR Transmission Control Module.
Is Your SSR Exhibiting These Transmission Issues?
A failing TCM can manifest in several ways. If you’re experiencing any of the following, it’s a strong indicator that your module needs replacement:
- ✔ Harsh, banging shifts or delayed gear engagement.
- ✔ The vehicle is stuck in a single gear (often called “limp mode”).
- ✔ The Check Engine Light or a transmission-specific warning light is on.
- ✔ Diagnostic Trouble Codes (DTCs) are present, such as P0700 (Transmission Control System Malfunction), P0751, P0756, or other solenoid-related codes.
- ✔ Inconsistent upshifting or downshifting, leading to poor acceleration.
- ✔ A noticeable drop in fuel efficiency.
DIY-Friendly Installation Guide for the 2005-2006 SSR Transmission Control Module
You don’t need to be a master mechanic to install this part. The process is straightforward and can be completed in your own driveway in under 30 minutes.
- Safety First: Always disconnect the negative terminal from your vehicle’s battery before starting any electrical work.
- Locate the Module: On the 2005-2006 Chevrolet SSR, the TCM is typically mounted on the front left-hand (driver’s side) frame rail.
- Disconnect and Remove: Carefully unplug the electrical connectors. Press the release tabs firmly to avoid damaging them. Then, unbolt the module from its mounting bracket.
- Install the New Module: Bolt the new, pre-programmed TCM into place and securely reconnect the electrical harnesses. You should hear a ‘click’ as they lock in.
- Reconnect and Verify: Reconnect the negative battery terminal. Start the vehicle and allow it to idle for a few minutes. If you have a basic scan tool, it’s good practice to clear any stored DTCs. Take a test drive to confirm the shifting is smooth and responsive.
Confirmed Fitment for Your Vehicle
This module is a direct-fit replacement for the following vehicle, and is also compatible with a wide range of other GM models. It is interchangeable with part numbers 24252114, 24234503, 24230461, 24234274, and more.
- Chevrolet SSR: 2005-2006 (Transmission; front LH frame)
- Also Fits: Chevrolet Tahoe, Silverado, Impala; GMC Yukon, Sierra; Cadillac DTS; Pontiac G6; Hummer H3, and many other GM vehicles from 2006-2014 equipped with a T42 TCM. Please verify your part number for a perfect match.
Frequently Asked Questions
What is VIN programming and why is it important?
VIN programming loads your vehicle’s specific software and calibrations onto the module before we ship it. This ensures the TCM communicates perfectly with your engine and transmission for optimal performance, shift quality, and fuel economy, eliminating the need for a costly dealership visit.
Do I need to send my old part back?
No, there is no core charge for this module. You can keep your old part, making the replacement process faster and more convenient for you.
Will this fix a P0700 trouble code?
A P0700 code is a general fault request from the TCM to the Engine Control Module (ECM) to turn on the check engine light. While a faulty TCM is a very common cause, P0700 indicates another, more specific transmission code is stored. This module often resolves the underlying issues (like solenoid circuit faults) that trigger the P0700.
How do I provide my VIN for programming?
After placing your order, you will be prompted to enter your vehicle’s 17-digit VIN. We cannot ship the module until we have this information to perform the programming service.
Is this part covered by a warranty?
Yes, this transmission control module is backed by our comprehensive one-year warranty, giving you peace of mind with your purchase.