Is Your Saturn Ion Shifting Erratically?
If you’re dealing with a 2006 or 2007 Saturn Ion that’s slamming into gear, refusing to shift, or has the check engine light glaring at you, the problem is very likely a failing Transmission Control Module (TCM). Over my 20 years in the shop, I’ve seen countless GM vehicles, including the Ion, come in with these exact issues. The T42 TCM is the electronic brain of your automatic transmission, and when it starts to fail, it can make your daily drive frustrating and unreliable.
Expert Pro Tip: Check Before You Replace
Before you order, take a moment to inspect the wiring harness leading to the TCM on your Ion. It’s located behind the driver’s side strut tower. I’ve seen cases where road debris or engine vibration has caused wires to chafe or break right at the connector. A simple visual inspection and a wiggle test of the harness can sometimes reveal the true source of the problem, saving you from replacing a part that might still be good. This is a five-minute check that has saved my customers hundreds of dollars.
The Definitive Solution for Your Transmission Woes
This replacement T42 TCM, part number 24230461, is the dependable solution to get your Saturn Ion running smoothly again. We take the guesswork and hassle out of the repair by pre-programming the module to your vehicle’s specific VIN. This means it arrives ready to install, with the latest GM software updates, eliminating the need for an expensive trip to the dealership for programming.
Common Symptoms of a Failing 2006-2007 Ion Transmission Control Module:
- ✔ Harsh, delayed, or unpredictable gear shifts.
- ✔ Vehicle is stuck in “limp mode” (usually 2nd or 3rd gear).
- ✔ Check Engine Light is on with transmission-related Diagnostic Trouble Codes (DTCs) like P0700 or solenoid-specific codes.
- ✔ Complete loss of shifting capability, either up or down.
- ✔ Poor acceleration and a noticeable drop in fuel economy.
Plug-and-Play Installation: No Dealer Visit Required
One of the biggest advantages of our module is the simple, direct-fit installation. You can have your car back to normal in under an hour with basic hand tools. Here’s a quick guide for your Saturn Ion:
- Safety First: Always disconnect the negative terminal from your car’s battery before starting any electrical work.
- Locate the TCM: On the 2006-2007 Ion, you’ll find the TCM mounted in the engine bay, tucked behind the driver’s side (LH) strut tower.
- 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, VIN-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 programmed, it’s always a good practice to use a basic OBD2 scan tool to clear any stored fault codes from the vehicle’s memory.
This module is a direct replacement for a wide range of GM part numbers, including 24234503, 24252114, and 24230461, ensuring broad compatibility. With a one-year warranty and no core charge, you can complete your repair with confidence. Don’t let a faulty TCM sideline your car—get the reliable, pre-programmed solution today.