Restore Flawless Shifting to Your Saturn ION
Is your 2006-2007 Saturn ION suffering from harsh shifting, getting stuck in gear, or displaying a check engine light? These are classic signs of a failing Transmission Control Module (TCM). The TCM is the electronic brain of your automatic transmission, responsible for orchestrating every gear change, managing torque converter lockup, and monitoring system health. When it fails, it can leave your vehicle unreliable and frustrating to drive. This replacement T42 TCM, part number 24243901, is the definitive solution to restore your vehicle’s original performance and drivability.
From the Diagnostic Bay
We had a 2007 Saturn ION come into the shop with a P0700 code and complaints of being stuck in 3rd gear (limp mode). The owner had already replaced two shift solenoids based on advice from a forum, but the problem persisted. A quick scan showed communication errors with the TCM. Instead of continuing to replace internal components, we installed a VIN-programmed TCM. After a 20-minute installation and clearing the codes, the car shifted perfectly. It’s a common scenario where the root cause is the module itself, not the mechanical parts it controls.
Symptoms of a Failing 2006-2007 Saturn ION Transmission Module
A faulty TCM can manifest in various ways, often mimicking mechanical transmission failure. Before considering a costly transmission rebuild, check if your vehicle is exhibiting these common electronic symptoms:
- ✔ Harsh or erratic gear shifts, including banging or jerking into gear.
- ✔ The vehicle gets stuck in a single gear, often referred to as “limp mode.”
- ✔ Delayed engagement when shifting from Park to Drive or Reverse.
- ✔ Illumination of the Check Engine Light or Transmission Warning Light.
- ✔ Diagnostic Trouble Codes (DTCs) such as P0700, P0750, or other solenoid-related codes.
- ✔ Complete failure to shift up or down.
- ✔ A noticeable decrease in fuel economy due to inefficient shifting.
- ✔ Inconsistent communication with diagnostic scan tools.
The Plug-and-Play Advantage: Pre-Programmed for Your VIN
One of the biggest hurdles in replacing modern vehicle electronics is the need for expensive dealership programming. Our T42 TCMs eliminate this step entirely. We pre-program each module to your vehicle’s specific Vehicle Identification Number (VIN) before it ships. This process loads the latest GM software and vehicle-specific calibrations, ensuring that the module is ready for immediate installation right out of the box. Simply install the part, connect the wiring harnesses, and you’re ready to go. No trips to the dealer, no extra programming fees—just a straightforward, effective repair.
This replacement module is a direct fit for your 2006-2007 Saturn ION Transmission Module and is interchangeable with a wide range of GM part numbers, including 24252114, 24234503, 24230461, and 24243901. Built to meet or exceed original equipment specifications, it ensures reliable, long-term performance for your vehicle’s transmission system.
Frequently Asked Questions
Do I need to have this TCM programmed by a dealer?
No. This module comes pre-programmed to your vehicle’s VIN. Simply provide your VIN at checkout, and the module will arrive ready for plug-and-play installation, saving you time and money on dealership programming.
Where is the TCM located on a 2006-2007 Saturn ION?
On the 2006-2007 Saturn ION, the Transmission Control Module is typically located in the engine compartment, positioned behind the driver’s side (LH) strut tower. Always disconnect the battery before beginning the replacement process.
Will this part fix a P0700 trouble code?
A P0700 code is a general transmission fault code, indicating that the TCM has detected a problem. While this module can resolve the underlying issue causing the P0700 code, it’s essential to diagnose any other accompanying codes to confirm the TCM is the source of the fault.
Is this a new or used part?
This is a high-quality, OEM-spec replacement part that has been thoroughly tested and prepared to ensure it meets strict performance standards. It is backed by our one-year warranty for your peace of mind.
What if my part number is not listed but my vehicle is?
The GM T42 TCM was used across many vehicles with several interchangeable part numbers. If your vehicle is a 2006-2007 Saturn ION and you are experiencing TCM-related symptoms, this module is very likely the correct fit. The VIN programming ensures it will work correctly with your specific vehicle’s configuration.