Restore Flawless Shifting to Your Saturn Ion
If you’re dealing with the frustration of a transmission that won’t shift correctly, gets stuck in gear, or triggers warning lights on your 2006-2007 Saturn Ion, you’ve come to the right place. As a technician with over two decades of experience under the hood, I’ve seen countless GM vehicles crippled by a failing Transmission Control Module (TCM). This isn’t just an inconvenience; it’s a critical failure that affects your car’s performance, safety, and fuel economy. This T42 series TCM, part number 24239926, is the definitive, reliable solution to get your vehicle driving like new again.
The beauty of this module is our expert programming service. We flash the unit with your vehicle’s specific VIN and the latest GM software before it even ships. This means it arrives at your door ready for a true plug-and-play installation, completely bypassing the expensive and time-consuming trip to a dealership for programming. It’s the most efficient way to solve complex transmission electronic issues.
Case Study: A Tricky Diagnosis
Just last month, a 2007 Saturn Ion was towed into the shop. The owner was frustrated; the car would randomly refuse to shift past 2nd gear and the check engine light was on. His local mechanic had replaced a shift solenoid, but the problem persisted. A quick scan showed a P0700 (Transmission Control System Malfunction) code. From experience, I knew these symptoms often pointed directly at the TCM. Internal circuit board failures in these T42 modules are common after years of heat cycles. We ordered this pre-programmed module, installed it in under 30 minutes, cleared the codes, and the car shifted perfectly on the test drive. The customer saved hundreds by avoiding a dealership visit and unnecessary parts guesswork.
Is Your Saturn Ion Showing These Transmission Red Flags?
A faulty TCM can manifest in several ways. If you’re experiencing any of the following, a failing module is the likely culprit. This replacement 2006-2007 Ion TCM is designed to resolve these exact problems.
- ✔ Harsh, jerky, or delayed gear shifts.
- ✔ Vehicle is stuck in “limp mode” (usually 2nd or 3rd gear).
- ✔ Check Engine Light or Transmission Warning Light is illuminated.
- ✔ Diagnostic Trouble Codes (DTCs) are present, such as P0700, P0750, P0753, P0758, or other solenoid-related faults.
- ✔ Complete loss of shifting capability or intermittent failure to engage gears.
- ✔ Poor acceleration and a noticeable drop in fuel efficiency.
DIY-Friendly Installation: 30 Minutes to Smooth Shifting
You don’t need to be a professional mechanic to install this part. With basic hand tools, you can have this job done in your own driveway. For the 2006-2007 Saturn Ion, the TCM is conveniently located and easy to access.
- Safety First: Disconnect the negative terminal from your vehicle’s battery to prevent electrical shorts and reset the system.
- Locate the TCM: On your Saturn Ion, find the Transmission Control Module located behind the driver’s side (LH) strut tower in the engine bay.
- Disconnect and Remove: Carefully unplug the electrical connectors. Be gentle with the locking tabs. Then, unbolt the module from its mounting bracket and remove the old unit.
- Install the New Module: Mount your new, pre-programmed TCM in the same location. Secure the bolts and firmly reconnect the electrical harnesses until they click into place.
- Final Steps: Reconnect the battery terminal. Start the vehicle and use a basic OBD2 scan tool to clear any stored fault codes from the previous failure. Your installation is complete!
Verified Compatibility for Your General Motors Vehicle
While this page is focused on the 2006-2007 Ion TCM, this versatile T42 module is a direct replacement for a wide range of GM cars, trucks, and SUVs. It is interchangeable with part numbers 24252114, 24234503, 24239926, and more. Please verify your specific model below:
- Saturn Ion: 2006-2007 (Transmission; behind LH strut tower)
- Chevrolet Cobalt: 2006-2010 (Transmission; LH strut tower)
- Chevrolet HHR: 2006-2011 (Transmission; LH engine compartment)
- Chevrolet Impala: 2006-2011 (Transmission; lower air cleaner housing)
- Chevrolet Malibu: 2006-2010 (Transmission; LH frame rail)
- Chevrolet Silverado 1500: 2007-2013 (Transmission; next to battery)
- GMC Sierra 1500: 2007-2013 (Transmission; next to battery)
- Pontiac G6: 2006-2010 (Transmission; LH strut tower)
- And many more GM models from 2006-2014.
Frequently Asked Questions
Do I need to have this TCM programmed by a dealer?
No. We pre-program the module to your vehicle’s VIN before shipping. It arrives ready for installation with no additional programming required, saving you time and money.
Is there a core charge for my old part?
Absolutely not. You can keep your old module or dispose of it at your convenience. There are no core charges or hassles involved.
What tools do I need for installation on my Saturn Ion?
You’ll typically only need a basic socket set to remove the mounting bolts and a flathead screwdriver to help release the connector tabs. The entire process is very straightforward.
What happens if I don’t provide my VIN?
Providing your VIN is essential for the plug-and-play functionality. Without it, we cannot program the module, and it will not work correctly in your vehicle. Please enter your VIN at checkout to ensure compatibility.
Does this part come with a warranty?
Yes, this module is backed by our one-year, hassle-free warranty, giving you peace of mind with your purchase.