If your 2007-2010 Saturn Vue is suffering from harsh shifting, getting stuck in gear, or has an illuminated check engine light, you’re likely dealing with a failed Transmission Control Module (TCM). As a technician with over two decades of experience, I’ve seen how a faulty TCM can make a reliable vehicle feel unpredictable and unsafe. This isn’t just an inconvenience; it’s a critical failure that impacts your vehicle’s performance and drivability. This T42 TCM, part number 24243921, is the definitive solution, arriving pre-programmed to your vehicle’s specific VIN for a true plug-and-play repair.
A Technician’s Notebook: The Saturn Vue with a Mind of Its Own
A customer brought in a 2008 Saturn Vue 2.4L complaining of what they called ‘ghost shifts.’ The transmission would slam into gear from a stop and sometimes refuse to shift past 2nd gear, triggering the check engine light. A quick scan showed a P0700 (Transmission Control System Malfunction) and a few solenoid circuit codes. Instead of chasing solenoids inside the transmission—a costly and often incorrect first step—we checked the TCM. These T42 modules, often located in the hot engine bay, are prone to internal circuit failure from heat and vibration. We installed one of our VIN-programmed modules, and in less than 30 minutes, the Vue was shifting like new. The customer saved hundreds by avoiding unnecessary transmission work and dealership programming fees.
Is Your Saturn Vue Showing These Signs?
A failing TCM will give you clear warning signs. If you’re experiencing any of the following, this module is the likely culprit:
- âś” Harsh, erratic, or delayed gear shifts.
- âś” Vehicle is stuck in “limp mode” (usually 2nd or 3rd gear).
- âś” Check Engine Light or Transmission Warning Light is on.
- âś” Diagnostic Trouble Codes (DTCs) like P0700, P0750, P0753, or other solenoid-related codes are present.
- âś” Complete failure to shift up or down.
- âś” A sudden drop in fuel economy.
- âś” Intermittent loss of communication with the TCM.
Get Back on the Road: A Simple Installation Guide
You don’t need to be a professional mechanic to install this part. The process is straightforward and can be completed in your driveway in under an hour.
- Safety First: Disconnect the negative terminal from your vehicle’s battery to prevent electrical shorts and help reset the system.
- Locate the TCM: On the Saturn Vue, the TCM is typically found in the LH front of the engine compartment. It’s a silver box with electrical connectors.
- Disconnect and Remove: Carefully unplug the electrical harnesses from the old module. Then, unbolt the module from its mounting bracket.
- Install the New Module: Bolt the new, pre-programmed TCM into place. Securely reconnect the electrical harnesses, ensuring they click into place.
- Final Steps: Reconnect the battery terminal. Start the vehicle and let it idle for a few minutes. While the module is plug-and-play, it’s good practice to use a basic OBD2 scanner to clear any stored fault codes.
Verified Fitment for Your Vehicle
This module is a guaranteed fit for the following vehicles, among many others. It is a direct replacement for part numbers including 24243921, 24252114, and 24234503.
- Saturn Vue: 2007-2008 (2.4L), 2009 (2.4L, with or without hybrid), 2010
- Chevrolet Cobalt & HHR: 2006-2011
- Chevrolet Impala & Monte Carlo: 2006-2011
- Chevrolet Silverado & GMC Sierra: 2007-2013 (non-hybrid)
- Pontiac G6: 2006-2010
- Buick LaCrosse & Lucerne: 2006-2011
- …and many other GM models from 2006-2014. Please verify your part number.
Frequently Asked Questions
Do I need to get this module programmed by a dealer?
No. We pre-program the module to your vehicle’s VIN before shipping. It arrives ready for immediate installation, saving you time and money.
Is this a difficult part to install for a DIYer?
Not at all. With basic hand tools, the installation typically takes less than 30 minutes. The module is easily accessible in the engine bay on most models.
What tools will I need for the job?
You’ll generally only need a socket set to remove the mounting bolts and a flathead screwdriver to help release the connector clips. No specialized tools are required.
Is there a core charge?
No, there is no core charge. You can keep your old part without any hassle or extra fees.
What kind of warranty is included?
This module is backed by our comprehensive one-year warranty, giving you peace of mind with your purchase.