End Your Saturn Aura’s Shifting Problems for Good
If your 2007-2009 Saturn Aura is suffering from erratic shifting, getting stuck in gear, or throwing transmission codes, you’re not just dealing with an annoyance—you’re facing a potential breakdown. As a technician with over two decades of experience, I’ve seen countless drivers frustrated by these exact issues. The culprit is almost always a failing Transmission Control Module (TCM). This VIN-programmed T42 TCM, part number 24230461, is the direct-fit, reliable solution designed to restore your vehicle’s performance and your peace of mind without a costly trip to the dealership for programming.
A Technician’s Notebook: The Misleading Solenoid Code
A customer brought in a 2008 Saturn Aura with a classic complaint: harsh 1-2 shifts and a P0752 code for a stuck-on shift solenoid. The previous shop had already replaced the solenoid, but the problem persisted. After a quick data stream check, I saw the TCM was commanding the shift but wasn’t receiving the correct feedback. The internal drivers in the original TCM were failing under load. We installed one of our pre-programmed T42 modules, and the car shifted perfectly on the test drive. This is a prime example of how a faulty module can mimic a mechanical failure, making a reliable 2007-2009 Aura TCM the true fix.
Is Your Vehicle Showing These Common TCM Failure Signs?
- âś” Harsh, jerky, or delayed gear shifts that make driving uncomfortable.
- âś” The vehicle enters “limp mode,” often stuck in 2nd or 3rd gear.
- âś” Your check engine light is on with Diagnostic Trouble Codes (DTCs) like P0700, P0750, or other transmission-related solenoid codes.
- âś” Inability to upshift or downshift properly, leading to poor acceleration and terrible fuel economy.
- âś” Complete loss of communication with the transmission, preventing it from functioning at all.
A Straightforward Guide to Your DIY Installation
Installing your new TCM is a simple process that most DIYers can complete in under 30 minutes. For the Saturn Aura, the module is typically located on the front of the left-hand frame rail.
- Safety First: Always disconnect the negative terminal from your vehicle’s battery before starting any electrical work.
- Locate the Module: Find the old TCM on the LH frame rail in the front of the engine compartment.
- Disconnect and Remove: Carefully unplug the electrical connectors. Be gentle with the locking tabs, as they can become brittle over time. Then, unbolt the module from its mounting bracket.
- Install the New TCM: Mount the new module in place and securely fasten the bolts. Reconnect the electrical connectors, ensuring they click into place.
- Final Steps: Reconnect the battery terminal. While our VIN programming handles the critical setup, it’s a good practice to use a basic scan tool to clear any stored fault codes from the vehicle’s memory.
Verified Vehicle Compatibility
This T42 TCM is a direct replacement for part number 24230461 and other interchangeable numbers. It is guaranteed to fit the following models, among many others:
- Saturn Aura: 2007, 2008, 2009 (Transmission; LH frame rail front)
- Chevrolet Cobalt & HHR: 2006-2011
- Chevrolet Impala & Monte Carlo: 2006-2011
- Chevrolet Silverado & GMC Sierra: 2007-2013 (4-speed models)
- Pontiac G6 & Grand Prix: 2006-2010
- Buick LaCrosse & Lucerne: 2006-2011
This module is engineered to OEM specifications and is compatible with a wide array of GM vehicles equipped with 4-speed automatic transmissions like the 4L60E, 4L65E, and 4L70E. Provide your VIN at checkout, and we’ll handle the rest, ensuring a perfect match for your vehicle’s specific software.
Frequently Asked Questions
Do I need to take my car to the dealer after installation?
No. This module comes fully programmed to your vehicle’s VIN. It is a true plug-and-play solution, saving you the time and expense of dealership programming.
What does this 2007-2009 Aura TCM actually do?
The Transmission Control Module acts as the brain for your automatic transmission. It controls shift points, torque converter lockup, and line pressure to ensure smooth and efficient operation.
Is there a core charge for my old part?
No, there is no core charge. You can keep your old part or recycle it locally without the hassle of returning it.
What if I order the wrong part?
We guarantee fitment based on the VIN you provide. Our team of experts verifies every order to ensure you receive the correct, programmed module for your specific vehicle.
What kind of warranty is included?
This module is backed by our comprehensive one-year warranty, giving you confidence and peace of mind in your repair.