Restore Peak Transmission Performance in Your Saturn Aura
Is your 2007, 2008, or 2009 Saturn Aura suffering from erratic shifting, getting stuck in gear, or displaying frustrating transmission-related warning lights? These are hallmark symptoms of a failing Transmission Control Module (TCM), the electronic brain responsible for orchestrating every gear change. A faulty TCM can disrupt your driving experience, harm fuel economy, and potentially lead to more severe transmission damage if left unaddressed. This genuine OEM-quality T42 TCM, service number 24252114, is the definitive solution to restore your vehicle’s smooth and reliable operation.
Unlike generic modules that require expensive and time-consuming dealership programming, this unit arrives at your door pre-programmed to your vehicle’s specific Vehicle Identification Number (VIN). This ensures flawless communication with your car’s powertrain control module (PCM) and other systems right out of the box. It’s a true plug-and-play fix designed for both professional technicians and savvy DIYers.
From the Diagnostic Bay
We recently had a 2008 Chevy Silverado in the shop with a classic complaint: the truck was stuck in 3rd gear (limp mode) and the check engine light was on. The owner was worried he needed a full transmission rebuild. We pulled the codes and saw P0700 (Transmission Control System Malfunction) and a few solenoid circuit faults. After verifying the wiring harness was intact, we knew the internal logic of the TCM had failed. Instead of a multi-thousand dollar rebuild, the solution was a new, VIN-programmed T42 module. Within 30 minutes of installation, all codes were cleared, and the truck was shifting perfectly through all gears on the test drive. This is the exact fix this part provides—a precise, reliable repair that saves you time, money, and stress.
Common Symptoms of a Failing TCM
- ✔ Harsh, jerky, or delayed gear shifts that disrupt a smooth ride.
- ✔ The vehicle enters ‘limp mode,’ often getting stuck in 2nd or 3rd gear.
- ✔ The Check Engine Light or a specific transmission warning illuminates on your dashboard.
- ✔ Diagnostic Trouble Codes (DTCs) such as P0700, P0750, or other solenoid-related faults are present.
- ✔ Inability to upshift or downshift, leading to poor acceleration and performance.
- ✔ A sudden and unexplained decrease in fuel efficiency.
- ✔ Complete loss of communication with the transmission, preventing it from functioning.
The Definitive 2007-2009 Saturn Aura TCM Solution
This T42 module is not just a replacement part; it’s a comprehensive solution for your vehicle’s transmission woes. Engineered to meet and exceed original GM specifications, it directly manages shift solenoids, torque converter clutch lockup, and line pressure to ensure every gear change is precise and efficient. By installing this module, you are restoring the original factory performance and protecting your transmission from the excessive wear and tear caused by a malfunctioning controller. Our meticulous VIN programming process uses the latest GM software updates, ensuring optimal shift points and fuel strategy for your specific vehicle configuration.
Easy Installation, Lasting Results
Designed for a straightforward installation, this module can be replaced with basic hand tools. On the Saturn Aura, the TCM is typically located on the left-hand front frame rail. The process is simple: disconnect the vehicle’s battery, carefully unplug the electrical connectors from the old module, unbolt it, and install the new one in its place. Once reconnected, clear any stored DTCs with a standard OBD2 scan tool, and you’re ready to drive. There is no core charge, so you can keep your old part without any hassle.
This module is a direct replacement for a wide range of part numbers, including: 24234503, 24230461, 24234274, 24235340, 24256960, and more, ensuring broad compatibility across the GM family of vehicles.
Frequently Asked Questions
What is VIN programming and why is it essential?
VIN programming is the process of loading your vehicle’s specific software and calibration files onto the TCM. Every vehicle has unique characteristics, and this programming ensures the module communicates correctly with the engine and other systems for optimal shift timing, fuel economy, and performance. Without it, the transmission may not function correctly or at all.
Can I install this module myself?
Yes, this part is designed for DIY installation. If you are comfortable working on your vehicle and have basic tools, you can typically complete the replacement in under an hour. The key steps are disconnecting the battery, swapping the modules, and clearing any stored codes with a scan tool.
Will this part fix my specific error code, like P0700?
This module is designed to resolve internal electronic failures within the TCM, which are a common cause for codes like P0700 and various solenoid circuit faults. While it fixes the module itself, you should always ensure that the vehicle’s wiring and the transmission solenoids are in good condition, as they can also trigger these codes.
What happens if I install a TCM that isn’t programmed for my car?
An unprogrammed or incorrectly programmed TCM will cause significant issues. It can lead to no-start conditions, harsh shifting, incorrect gear engagement, persistent warning lights, and even potential damage to your transmission’s mechanical components due to improper line pressure and shift commands.
Is there a core charge for my old part?
No, there is no core charge associated with this part. You are not required to send your old, faulty module back to us, saving you time and return shipping costs.