Restore Your Saturn ION’s Shifting Performance
Is your 2006-2007 Saturn ION experiencing frustrating transmission issues like harsh shifting, getting stuck in gear, or a persistent 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 managing gear changes, fluid pressure, and torque converter operation. When it fails, it can disrupt your vehicle’s performance and drivability. This genuine quality GM T42 TCM, part number 24238856, is the definitive solution to restore your vehicle’s factory performance.
Expert Pro Tip
Before installing your new TCM, always disconnect the vehicle’s battery for at least 15 minutes. This helps reset the vehicle’s internal computers and ensures a clean slate for the new module. After installation, use a compatible OBD2 scan tool to clear any lingering Diagnostic Trouble Codes (DTCs) from the system for a complete fix.
Common Symptoms of a Failing TCM
- ✔️ Harsh, erratic, or delayed gear shifts that make driving uncomfortable.
- ✔️ Vehicle enters “limp mode,” often stuck in 2nd or 3rd gear, with limited speed.
- ✔️ Check Engine Light or Transmission Warning Light is illuminated on the dashboard.
- ✔️ Common trouble codes are present, such as P0700, P0750, or other solenoid-related faults.
- ✔️ A noticeable decrease in fuel economy due to inefficient transmission operation.
- ✔️ Complete failure to shift gears, leaving you stranded.
Why Choose Our Pre-Programmed 2006-2007 Saturn ION TCM?
Replacing a TCM used to mean a costly trip to the dealership for programming. We eliminate that hassle. This module is expertly programmed to your vehicle’s specific Vehicle Identification Number (VIN) before it ships. This ensures it communicates perfectly with your ION’s engine computer and other systems right out of the box. It arrives ready for a straightforward, plug-and-play installation, saving you time and money on expensive dealership labor. Built to meet or exceed original equipment standards, this module provides a reliable, long-term solution to your transmission woes.
This T42 TCM is not just for the Saturn ION. It is a direct replacement for a wide range of General Motors vehicles from 2006-2014 equipped with 4-speed automatic transmissions like the 4L60E, 4L65E, and 4L70E. It is interchangeable with numerous part numbers, including 24252114, 24234503, and 24242391, making it a versatile and dependable part for models like the Chevrolet Silverado, GMC Sierra, Buick LaCrosse, and Pontiac G6.
Frequently Asked Questions
What does this Transmission Control Module do?
The TCM acts as the central computer for your automatic transmission. It receives data from various sensors on the engine and transmission to control shift solenoids, regulate hydraulic pressure, and manage the torque converter lockup, ensuring smooth and efficient gear changes.
Is this part difficult to install?
Installation is generally straightforward for someone with basic mechanical skills. On a 2006-2007 Saturn ION, the TCM is typically located behind the LH strut tower. The process involves disconnecting the battery, unplugging the electrical connectors, unbolting the old module, and installing the new one. The entire job can often be completed in under 30 minutes.
Does this module require additional programming?
No. We pre-program the module to your vehicle’s VIN before shipping. This means it is ready for immediate installation with no need for a trip to the dealership for expensive programming or flashing.
What happens if I don’t replace a faulty TCM?
Ignoring a failing TCM can lead to more severe transmission damage. Continued erratic shifting can cause excessive wear on internal components like clutches and bands, potentially leading to a complete transmission failure that is far more costly to repair.
How do I provide my VIN for programming?
You will be prompted to enter your vehicle’s 17-digit VIN during the checkout process. Please double-check it for accuracy to ensure perfect programming for your specific vehicle.