Restore Smooth, Reliable Shifting to Your Saturn ION
Is your 2006-2007 Saturn ION suffering from erratic shifting, getting stuck in gear, or throwing transmission-related check engine lights? These are classic signs of a failing Transmission Control Module (TCM). As a technician with over two decades of experience, I’ve seen how a faulty TCM can mimic a major mechanical failure, leading to costly misdiagnoses. This T42 TCM, part number 24256960, is the definitive solution, arriving pre-programmed to your vehicle’s specific VIN for a true plug-and-play repair.
The TCM is the brain of your automatic transmission. It processes data from various sensors to control shift points, torque converter lockup, and line pressure. When it fails, communication breaks down, resulting in the frustrating and sometimes dangerous symptoms you’re experiencing. Our professionally programmed 2006-2007 Saturn ION TCM restores this critical communication, ensuring your transmission operates precisely as the manufacturer intended, without requiring an expensive trip to the dealership for programming.
Case Study: A Tricky Diagnosis
A customer brought in a 2007 Saturn ION with a complaint of intermittent, harsh 1-2 shifts and occasionally getting stuck in 3rd gear (limp mode). They were worried their transmission was shot. After pulling the codes, I saw a generic P0700 (Transmission Control System Malfunction) and a specific solenoid code. While the solenoid itself was a possibility, my experience with these platforms pointed to the TCM. We swapped in a VIN-programmed module, and the problem was solved instantly. The customer saved over a thousand dollars by avoiding an unnecessary transmission rebuild. This highlights how a failing 2006-2007 Saturn ION TCM is often the root cause of these electrical gremlins.
Is Your Saturn Exhibiting These Telltale Signs?
A failing TCM will give you clear warnings. If you notice any of the following, it’s time to consider a replacement:
- ✔ Harsh, slamming, or delayed gear shifts.
- ✔ Vehicle is stuck in one gear (often called “limp mode”).
- ✔ The check engine light or transmission warning light is illuminated.
- ✔ Diagnostic Trouble Codes (DTCs) are present, such as P0700, P0750, or other solenoid-related faults.
- ✔ A sudden drop in fuel economy.
- ✔ The transmission seems to slip between gears or fails to engage properly from Park.
A Straightforward Guide to Your Saturn ION TCM Swap
One of the best parts of this solution is its simplicity. For a DIYer with basic tools, this is a very manageable job that can be completed 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 2006-2007 Saturn ION, the TCM is located in the engine bay, tucked behind the driver’s side (LH) strut tower.
- Disconnect and Remove: Carefully unplug the electrical connectors from the old TCM. Then, unbolt the module from its mounting bracket.
- Install the New TCM: Mount your new, pre-programmed module in the same location and securely fasten the bolts. Reconnect the electrical connectors, ensuring they click into place.
- Final Steps: Reconnect the battery terminal. While our programming handles the critical setup, it’s good practice to use a basic OBD2 scan tool to clear any stored fault codes from the vehicle’s memory.
Verified Vehicle Compatibility List
This T42 TCM is a direct replacement for a wide range of General Motors vehicles. It is interchangeable with part numbers including 24252114, 24234503, 24230461, 24234274, 24256960, and more. Please verify your vehicle is on the list below for guaranteed fitment.
Fits Models Including:
- 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)
- Pontiac G6: 2006-2010 (Transmission; LH strut tower)
- Chevrolet Silverado 1500: 2007-2013 (Transmission; next to battery)
- GMC Sierra 1500: 2007-2013 (Transmission; next to battery)
- …and many more GM cars, trucks, and SUVs.
Do I need to program this 2006-2007 Saturn ION TCM?
Do I need to program this 2006-2007 Saturn ION TCM?
No. This module comes fully programmed to your vehicle’s VIN. You just need to provide your VIN at checkout, and it will arrive ready for plug-and-play installation, with no dealership visit required.
What tools are required for installation?
Installation typically requires only basic hand tools, such as a socket set and a wrench to disconnect the battery. No specialized diagnostic equipment is needed for the installation itself.
Will this fix a P0700 trouble code?
Yes, in most cases. The P0700 code is a general fault code indicating the TCM has detected a problem. If the TCM itself is the source of the fault, replacing it with this pre-programmed unit will resolve the code and the underlying issue.
Is there a core charge for my old part?
No, there is no core charge. You can keep or dispose of your old module without the hassle of returning it, making the repair process even simpler.