Restore Peak Performance to Your Chevrolet SSR
Is your 2005-2006 Chevrolet SSR suffering from erratic shifting, delayed gear engagement, or a persistent check engine light? These are classic signs of a failing Transmission Control Module (TCM). As the central computer for your automatic transmission, the TCM dictates every shift, manages torque converter lockup, and ensures smooth, efficient operation. When it fails, it can leave your vehicle stuck in ‘limp mode’ or make driving unpredictable and unsafe. This replacement T42 TCM, part number 24238856, is the definitive solution to restore your vehicle’s transmission to its original, precise performance.
From the Diagnostic Bay
We once had a 2006 Trailblazer (which uses this same T42 module) come into the shop with a classic complaint of harsh shifting from 1st to 2nd gear. The owner had already spent a small fortune replacing shift solenoids based on a generic code reader’s output, but the problem persisted. After a quick scan with our professional equipment, we saw the tell-tale signs of internal TCM failure—erratic voltage readings and communication dropouts. We installed a VIN-programmed module, and the truck shifted like new. It’s a common scenario: mechanics often chase symptoms inside the transmission when the real problem is the electronic controller. This part saves you from unnecessary repairs by addressing the root cause directly.
Why Choose Our Programmed SSR Transmission Module?
The key to a successful and hassle-free repair is our expert VIN programming service. Unlike generic modules that require an expensive trip to the dealership for coding, this unit arrives at your door fully programmed with the latest GM software specific to your SSR’s Vehicle Identification Number. This ensures seamless communication between the TCM, the engine computer, and the transmission itself. The result is a simple, plug-and-play installation that restores factory shift patterns, optimizes fuel economy, and resolves frustrating diagnostic trouble codes (DTCs) right out of the box. This is the most reliable and efficient way to get your SSR Transmission Module replaced and your vehicle running perfectly again.
Common Symptoms of a Failing GM T42 TCM
- ✔ Harsh, slamming, or unpredictable gear shifts.
- ✔ The vehicle gets stuck in one gear (often 2nd or 3rd) known as ‘limp mode’.
- ✔ Check Engine Light or Transmission Warning Light is illuminated on the dash.
- ✔ Diagnostic codes such as P0700, P0750, or other solenoid-related faults are present.
- ✔ Delayed engagement when shifting from Park to Drive or Reverse.
- ✔ Complete loss of upshifting or downshifting capabilities.
- ✔ Poor fuel mileage and a feeling of sluggish performance.
Installation and Compatibility
Replacing the SSR Transmission Module is a straightforward process for a DIY mechanic. On the 2005-2006 SSR, it is typically located on the front left-hand frame rail. The entire job can usually be completed in under an hour. Simply disconnect the battery, unplug the electrical connectors from the old module, unbolt it, and install the new one in its place. Once installed, reconnect the battery. While our programming resolves most issues, it’s always good practice to use a scan tool to clear any stored historical codes. Best of all, there is no core charge, so you don’t have to worry about the cost and hassle of sending your old part back.
This module is a direct replacement for part number 24238856 and interchanges with several other service numbers, including: 24252114, 24234503, 24230461, 24234274, 24235340, 24235754, 24239224, and more, ensuring wide compatibility across many GM vehicles using the 4L60E, 4L65E, and 4L70E transmissions.
Frequently Asked Questions
What exactly does a Transmission Control Module do?
The TCM is a computer that processes data from various sensors on your vehicle’s engine and transmission. It uses this information to control shift solenoids, regulate transmission fluid pressure, and manage the torque converter clutch, ensuring smooth and efficient gear changes.
Why is VIN programming so important for this part?
VIN programming loads your vehicle’s specific software and calibrations onto the module. This ensures it communicates correctly with your vehicle’s other computers and operates the transmission according to factory specifications for your exact model, engine, and tire size. Without it, the transmission may not shift correctly or at all.
Can I install this SSR Transmission Module myself?
Yes, this is a very DIY-friendly repair. The module is typically easy to access on the front LH frame rail. Basic hand tools are all that’s required, and because it comes pre-programmed, no special electronic tools are needed for setup. Just bolt it in, plug it in, and you’re ready to go.
Will this fix a P0700 diagnostic trouble code?
A P0700 code is a general fault code indicating that the TCM has detected a problem and has requested the check engine light be turned on. While P0700 itself doesn’t pinpoint the TCM as the failure, it is very often present when the TCM has failed and set other, more specific codes. Replacing a faulty TCM will resolve the underlying issue and allow you to clear the P0700 code.
Is there a warranty included with this module?
Absolutely. This module is backed by our standard one-year warranty, giving you peace of mind and confidence in your purchase. We stand behind the quality and reliability of our programmed electronic components.