Restore Your Saturn Ion’s Shifting Performance
Is your 2006-2007 Saturn Ion suffering from erratic shifting, getting stuck in gear, or displaying a check engine light with transmission codes? These are classic signs of a failing Transmission Control Module (TCM). The TCM is the electronic brain of your automatic transmission, responsible for orchestrating smooth gear changes, managing torque converter lockup, and monitoring system health. When it fails, drivability is severely compromised. This genuine GM T42 TCM, part number 24239224, is the definitive solution to restore your vehicle’s factory performance and reliability.
From the Diagnostic Bay
We had a 2007 Saturn Ion come into the shop stuck in ‘limp mode’—it wouldn’t shift out of 3rd gear. The owner had already replaced two shift solenoids based on the P0750-series codes the car was throwing, but the problem persisted. A quick scan showed communication errors with the TCM. Instead of continuing to chase phantom solenoid issues, we installed a VIN-programmed T42 module. After a 20-minute installation and clearing the codes, the car shifted perfectly. It’s a common scenario: the codes point to a component, but the real culprit is the module commanding it.
Is Your Saturn Ion Showing These Symptoms?
- ✔️ Harsh, delayed, or unpredictable gear shifts that make driving uncomfortable.
- ✔️ The vehicle is stuck in a single gear (limp mode) to protect the transmission.
- ✔️ An illuminated Check Engine Light or Transmission Warning Light on your dash.
- ✔️ Diagnostic Trouble Codes (DTCs) such as P0700, P0750, P0751, or other solenoid-related faults.
- ✔️ A noticeable decrease in fuel economy due to inefficient shifting.
- ✔️ Complete failure to engage gears from Park, Neutral, or Drive.
The Superior Solution: A Pre-Programmed 2006-2007 Ion Transmission Module
Don’t settle for a generic, unprogrammed module that requires an expensive trip to the dealership for calibration. Our T42 TCMs are meticulously programmed to your vehicle’s specific Vehicle Identification Number (VIN) before they ship. This critical step ensures that the module has the latest GM software updates and is perfectly matched to your Ion’s powertrain configuration. The result is a true plug-and-play installation that restores optimal shift points, fuel efficiency, and overall transmission function right out of the box.
This module is a direct replacement for a wide range of GM vehicles equipped with 4-speed automatic transmissions like the 4L60E, 4L65E, and 4L70E. It directly interchanges with part numbers 24252114, 24234503, 24230461, and others, making it a versatile and reliable choice for your repair.
Simple Installation for DIY and Professionals
Replacing the TCM on your Saturn Ion is a straightforward job that can be completed in under an hour with basic hand tools. The module is located behind the driver-side strut tower in the engine compartment. Simply disconnect the negative battery terminal, unplug the electrical connectors from the old module, unbolt it, and install the new one in its place. Reconnect everything, and you’re ready to go. Using a basic OBD2 scanner to clear any stored fault codes after installation is recommended for a clean reset.
Frequently Asked Questions
What does “VIN Programmed” actually mean?
VIN programming means we load the module with the specific software and calibrations for your exact vehicle using your car’s 17-digit Vehicle Identification Number. This ensures it communicates perfectly with your engine computer and other systems, eliminating the need for additional programming at a dealership.
Will this 2006-2007 Ion Transmission Module fix my P0700 code?
A P0700 code is a general fault code indicating the TCM has detected a problem. While this module often resolves the root cause of a P0700, it’s essential to diagnose the specific codes the TCM has stored (e.g., P0751, P0756) to confirm the module is the issue. In many cases, a faulty TCM is the primary cause.
Is this a difficult part to install myself?
For most individuals with basic mechanical skills, this is a very manageable installation. The module is easily accessible on the 2006-2007 Saturn Ion, located behind the driver-side strut tower. The process involves disconnecting the battery, unplugging connectors, and swapping the part. No complex procedures are required.
Do I need to send my old module back?
No, there is no core charge for this part. You can keep your old module or dispose of it at your convenience, making the process faster and hassle-free.
What is the warranty on this part?
This transmission control module comes with a one-year warranty, giving you peace of mind and confidence in the quality and durability of your repair.