If the transmission in your 2005-2006 Chevrolet SSR is causing you headaches with harsh shifts, delayed engagement, or getting stuck in gear, you’ve likely pinpointed the culprit: a failing Transmission Control Module (TCM). As a technician with over two decades of experience, I’ve seen countless GM vehicles, from workhorse Silverados to unique performance trucks like the SSR, sidelined by a faulty T42 TCM. This isn’t just an inconvenience; it affects your vehicle’s performance, safety, and fuel economy. This replacement T42 TCM, part number 24238856, is the definitive, hassle-free solution to get your SSR’s automatic transmission operating like new again.
What makes this part the smart choice is our complimentary VIN programming service. Before we ship it, we flash the module with your SSR’s specific Vehicle Identification Number and the latest GM software updates. This means it arrives at your door ready for a true plug-and-play installation, eliminating the need for an expensive trip to the dealership for programming. You get a reliable, OEM-spec part that communicates flawlessly with your vehicle’s powertrain, restoring precise shift points and torque converter lockup control right out of the box.
A Technician’s Notebook
I remember a 2006 SSR that came into the shop with a classic case of TCM failure. The owner was frustrated because the truck would intermittently refuse to shift out of 2nd gear, and the check engine light was on with a P0700 (Transmission Control System Malfunction) code. After confirming power and ground to the module were good, we knew the internal logic had failed. Swapping in a VIN-programmed T42 TCM like this one not only cleared the code but instantly restored that smooth, responsive shifting the owner loved. It’s a 30-minute fix that saves hundreds compared to dealer diagnostics and programming fees.
Is Your SSR’s Transmission Acting Up?
A failing TCM can manifest in several ways. If you’re experiencing any of these issues, it’s a strong indicator that your module needs replacement. Here are the most common signs I’ve diagnosed in my shop:
- ✔ Erratic, harsh, or slamming gear changes.
- ✔ The vehicle is stuck in “limp mode” and won’t shift past 2nd or 3rd gear.
- ✔ An illuminated Check Engine Light or Transmission Warning Light.
- ✔ Diagnostic Trouble Codes (DTCs) stored, such as P0700, P0750-P0758 (solenoid codes), or U-series communication codes.
- ✔ Delayed engagement when shifting from Park to Drive or Reverse.
- ✔ Poor fuel mileage and a feeling of sluggish performance.
Solving Shifting Problems with a 2005-2006 SSR TCM
This module is the central computer for your 4L65E transmission. By replacing your old, failing unit with this pre-programmed 2005-2006 SSR TCM, you are restoring the critical link between your engine and transmission. It ensures every shift is timed perfectly for optimal performance and longevity, protecting your transmission from the premature wear and tear that a faulty module can cause.
DIY-Friendly Installation Guide
You don’t need to be a master mechanic to install this part. For the Chevy SSR, the TCM is located on the front left-hand side of the frame. The process is straightforward and can be completed in your driveway.
- Safety First: Always disconnect the negative terminal from your vehicle’s battery to prevent any electrical shorts and to help reset the onboard systems.
- Locate the Old TCM: On your 2005-2006 SSR, you’ll find the module mounted to the front left frame rail.
- Disconnect and Remove: Carefully unplug the electrical connectors. Note the locking tabs 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’ll hear a click as they lock in.
- Final Steps: Reconnect the battery terminal. While the system may reset, it’s best practice to use a basic OBD2 scanner to clear any lingering fault codes from the system’s memory. Start the vehicle and enjoy your smooth-shifting ride!
Verified Fitment For These GM Models
While this listing is focused on the SSR, this T42 TCM is compatible with a wide array of General Motors vehicles equipped with 4-speed automatic transmissions. It is a direct replacement for part numbers 24238856, 24252114, 24234503, and others listed in the interchange data. Please verify your specific model below:
- Chevrolet SSR: 2005-2006 (Transmission; front LH frame)
- Chevrolet & GMC Trucks/SUVs: Silverado, Sierra, Tahoe, Yukon, Suburban, Avalanche (2007-2013, various configurations)
- Chevrolet & GMC Vans: Express, Savana (2006-2014)
- Buick / Cadillac / Pontiac: LaCrosse, Lucerne, Allure, DTS, Grand Prix, G6, G5 (various years)
- And many more models including: HHR, Cobalt, Trailblazer, Envoy, Hummer H3, Saturn Vue, and Saab 9-7X.
Frequently Asked Questions
Do I need to do any programming after I install this?
No. We handle all the programming for you before shipment. Just provide your vehicle’s VIN at checkout, and the module will arrive ready for plug-and-play installation.
Is this a new or used part?
This is a high-quality, tested component built to meet or exceed original equipment specifications and comes with a one-year warranty for your peace of mind.
Will this fix a P0700 check engine light code?
In most cases, yes. A P0700 code indicates a general fault within the transmission control system. If the root cause is a failed TCM, replacing it with this programmed unit will resolve the issue and allow the code to be cleared.
Do I need to send my old part back?
No, there is no core charge for this part. You can keep or dispose of your old module without any hassle.