Restore Peak Transmission Performance in Your Saturn Aura
Are you experiencing frustrating and unpredictable shifting in your 2007, 2008, or 2009 Saturn Aura? Symptoms like harsh gear changes, delayed engagement from park to drive, or the dreaded “limp mode” are often direct indicators of a failing Transmission Control Module (TCM). The TCM is the electronic brain of your automatic transmission, responsible for orchestrating every shift with precision. When it fails, it can disrupt your vehicle’s drivability, fuel economy, and overall reliability. This genuine GM T42 Transmission Control Module, service part number 24239224, is the definitive solution to restore your vehicle’s factory performance.
We had a 2008 Saturn Aura come into the shop with the check engine light on and a complaint of very hard shifting, especially from 1st to 2nd gear. The customer was worried about a complete transmission failure. A quick scan pulled a P0700 (Transmission Control System Malfunction) and a P0752 (Shift Solenoid ‘A’ Stuck On). While a solenoid could be the culprit, experience with these GM 4-speed automatics points to the TCM. We inspected the wiring and fluid, which were fine. Instead of a costly transmission teardown, we started by replacing the original TCM with one of our VIN-programmed units. After a 20-minute installation and clearing the codes, the car shifted perfectly on the test drive. The new module resolved the internal electronic fault that was sending incorrect signals, saving the customer thousands on an unnecessary transmission rebuild.
Diagnosing and Replacing Your Saturn Aura TCM
A faulty Saturn Aura TCM can manifest in various ways, often mimicking mechanical transmission problems. It’s crucial to correctly identify the source of the issue to avoid expensive and unnecessary repairs. This module is the central command for all transmission functions, including shift timing, line pressure, and torque converter clutch lockup. By replacing your old, failing unit with this pre-programmed module, you are directly addressing the root cause of many common electronic transmission faults.
Common Symptoms of a Failing GM T42 TCM
- ✔️ Erratic Shifting: Experiencing sudden, harsh, or delayed gear shifts that make driving uncomfortable and unpredictable.
- ✔️ Warning Lights: The Check Engine Light or a dedicated transmission warning light is illuminated on your dashboard.
- ✔️ Stuck in Gear: The vehicle enters a failsafe or “limp mode,” often getting stuck in 2nd or 3rd gear to prevent further damage.
- ✔️ No Shifting: The transmission refuses to upshift or downshift as you accelerate or decelerate.
- ✔️ Diagnostic Trouble Codes (DTCs): Your mechanic finds codes like P0700, P0750-P0758, or other solenoid-related faults during a scan.
- ✔️ Poor Fuel Economy: Inefficient shifting and torque converter operation lead to a noticeable drop in MPG.
Plug-and-Play Solution with VIN Programming
The biggest hurdle in replacing modern vehicle electronics is the need for expensive dealership programming. We eliminate that step entirely. This Saturn Aura TCM arrives at your door pre-programmed to your vehicle’s specific Vehicle Identification Number (VIN). This ensures that all factory settings, shift points, and software updates are loaded and ready to go. The module will integrate seamlessly with your vehicle’s engine computer and other systems, providing a true plug-and-play installation. Simply install the part, connect the battery, and drive away.
Installation and Compatibility
For the 2007-2009 Saturn Aura, the TCM is typically located on the front of the left-hand frame rail. The installation is straightforward for a DIY mechanic with basic tools and can be completed in under an hour. Disconnecting the battery beforehand is recommended to reset the vehicle’s electrical systems. This module is a direct replacement for multiple part numbers, including 24252114, 24234503, 24230461, and 24239224, among others. It is also compatible with a wide range of other GM vehicles from 2006-2014, making it a proven and reliable component across models like the Chevrolet Impala, GMC Sierra, Buick LaCrosse, and Pontiac G6.
Frequently Asked Questions
Do I need to have this TCM programmed by a dealer?
No. This module comes fully pre-programmed to your vehicle’s VIN. It is a plug-and-play solution that requires no additional programming or dealership visits, saving you time and money.
Where is the TCM located on a 2007-2009 Saturn Aura?
On the Saturn Aura, the Transmission Control Module is typically found bolted to the front of the left (driver’s side) frame rail in the engine compartment.
Will this fix a P0700 trouble code?
A P0700 code is a general fault code indicating the TCM has detected a problem. While this module often resolves the underlying issue causing the P0700 (like internal circuit failure or solenoid driver faults), you should have the vehicle scanned for more specific codes (e.g., P0751, P0756) to confirm the diagnosis.
Is this a new or used part?
This is a high-quality, OEM-standard component that has been thoroughly inspected and prepared to meet or exceed original factory specifications. It is backed by our one-year warranty for your peace of mind.
What if I install it and still have problems?
While this Saturn Aura TCM resolves the vast majority of electronic transmission issues, it’s possible for problems to exist in the wiring harness or the transmission’s internal mechanical parts. We offer expert support to help you diagnose the issue further if needed.