Restore Crisp, Reliable Shifting to Your Chevrolet SSR
If you’re experiencing the frustration of a transmission that won’t shift correctly, is stuck in limp mode, or throws confusing error codes, you’ve come to the right place. As a technician with over two decades of experience under the hood, I’ve seen firsthand how a failing Transmission Control Module (TCM) can sideline an otherwise perfect vehicle. This T42 TCM, part number 24243921, is the definitive solution for your 2005-2006 Chevrolet SSR, arriving pre-programmed to your specific Vehicle Identification Number (VIN) for a true plug-and-play repair.
The TCM is the electronic brain of your automatic transmission, responsible for orchestrating every gear change, managing torque converter lockup, and monitoring system health. When it fails, the symptoms can range from annoying to dangerous. This module restores that critical communication, ensuring your SSR’s 4L60E or 4L65E transmission performs exactly as the factory intended. Forget about costly diagnostic appointments and programming fees at the dealership; this part is ready to install right out of the box.
A Technician’s Notebook
I remember a 2006 SSR rolling into my bay a few years back. The owner was at his wit’s end. He’d been to two other shops for a persistent issue where the truck would slam into gear from a stop and refuse to upshift past 2nd gear on the highway. They had replaced solenoids and fluid, but the problem always returned. After a quick scan, I saw the classic P0700 (Transmission Control System Malfunction) code, but no specific solenoid faults. Experience told me this pointed to the controller itself. We installed a VIN-programmed 2005-2006 SSR TCM, and in less than an hour of work, the truck was shifting like it just left the showroom. It’s often not the mechanical parts, but the electronic brain that’s the source of the issue.
Is Your SSR Exhibiting These Transmission Faults?
A faulty TCM can manifest in several ways. If you’re noticing any of the following, it’s a strong indicator that your module needs replacement:
- ✔ Harsh, delayed, or erratic gear shifts that make driving unpredictable.
- ✔ The vehicle is stuck in a single gear (often called “limp mode”) and will not shift up or down.
- ✔ Check Engine Light or a dedicated transmission warning light is illuminated on your dash.
- ✔ Your scanner shows Diagnostic Trouble Codes (DTCs) such as P0700, P0750-series solenoid codes, or communication errors.
- ✔ A noticeable drop in fuel economy or a sensation of the transmission slipping.
- ✔ Complete loss of communication with the transmission, preventing it from engaging.
DIY Installation: Get Back on the Road Fast
One of the best features of this module is its straightforward installation. You don’t need a professional lift or specialized programming equipment. For the Chevy SSR, the process is simple:
- Safety First: Always disconnect the negative terminal on your vehicle’s battery before starting any electronic work.
- Locate the Module: On the 2005-2006 SSR, the TCM is typically located on the front left-hand (driver’s side) frame rail.
- Disconnect and Remove: Carefully unplug the electrical connectors. Note the tab locations to avoid damage. 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.
- Final Steps: Reconnect the battery terminal. While the module is plug-and-play, it’s best practice to use a basic OBD2 scanner to clear any stored fault codes from the vehicle’s memory.
Guaranteed Vehicle Compatibility
This T42 TCM is a direct-fit replacement for a wide array of General Motors vehicles. While this page is focused on the 2005-2006 SSR TCM, it is also compatible with the following models and locations. Please verify your specific model and location before ordering.
- ✔ Chevrolet SSR: 2005-2006 (front LH frame)
- ✔ Chevrolet & GMC Trucks/SUVs (Silverado, Sierra, Tahoe, Yukon, etc.): 2006-2013 (Typically next to the battery)
- ✔ Chevrolet & GMC Vans (Express, Savana): 2006-2014 (RH engine compartment)
- ✔ Buick, Pontiac, Saturn Cars (LaCrosse, Grand Prix, Aura, etc.): 2006-2011 (Often under or near the air cleaner housing or on LH strut tower)
- ✔ Hummer H3, Chevrolet Colorado, GMC Canyon: 2008-2012 (RH rear engine compartment)
- ✔ And many more. This part interchanges with 24252114, 24234503, 24243901, and others.
Frequently Asked Questions
Do I need to have this module programmed by a dealer?
No. This module is delivered pre-programmed to your vehicle’s VIN. It is ready for installation right out of the box, saving you time and the high cost of dealership programming.
Is there a core charge for my old part?
No, there is no core charge. You can keep your old module or dispose of it without the hassle of returning it.
What tools do I need for installation?
Basic hand tools are all that’s required. Typically, you’ll need a socket set to remove the mounting bolts and potentially a small flathead screwdriver to help release the electrical connector tabs.
Will this fix a P0700 trouble code?
A P0700 code is a general fault request from the TCM to the main engine computer. While this module often resolves the root cause of a P0700, it’s important to ensure there are no underlying wiring or solenoid issues. In the vast majority of cases I’ve seen, a faulty TCM is the culprit.
What is the warranty on this part?
This part comes with a one-year warranty, giving you peace of mind and confidence in your repair.