Restore Peak Performance to Your Saturn Aura’s Transmission
If your 2007, 2008, or 2009 Saturn Aura is suffering from harsh shifting, delayed gear engagement, or has a persistent check engine light, a failing Transmission Control Module (TCM) is the likely culprit. This critical electronic component is the brain of your automatic transmission, responsible for managing shift points, torque converter clutch operation, and fluid pressure. A faulty TCM can lead to poor fuel economy, unpredictable driving behavior, and even leave you stranded. This direct-fit GM T42 TCM, part number 24235340, is the definitive solution to restore your vehicle’s smooth and reliable operation.
From the Diagnostic Bay
We had a 2008 Pontiac G6 (which shares its platform with the Aura) come into the shop with classic symptoms: it was stuck in 3rd gear limp mode, and the dash was lit up with a check engine light and a transmission warning. The owner had already replaced a shift solenoid with no success. A quick scan showed a P0700 (Transmission Control System Malfunction) code. Instead of chasing individual solenoid codes, we checked the TCM connections first. Finding no wiring issues, we knew the module itself had failed internally. We installed a VIN-programmed T42 TCM just like this one. After a 20-minute installation and clearing the codes, the car shifted perfectly through all gears on the test drive. The customer was thrilled to have their car back without an expensive trip to the dealership for programming.
Is Your 2007-2009 Saturn Aura TCM Failing?
The Transmission Control Module is a complex computer, and when it begins to fail, the symptoms can range from subtle annoyances to critical failures. Recognizing these signs early can prevent further damage to your transmission. Look out for the following indicators that point to a needed replacement.
Common Symptoms of a Bad TCM
- ✔ Erratic and Harsh Shifting: Your vehicle may slam into gear, hesitate between shifts, or shift at the wrong RPMs.
- ✔ Stuck in Limp Mode: The transmission may refuse to shift out of a single gear (often 2nd or 3rd) to protect itself from damage.
- ✔ Warning Lights: The Check Engine Light or a specific transmission warning light will illuminate on your dashboard.
- ✔ Diagnostic Trouble Codes (DTCs): You may find codes like P0700, P0750, or other solenoid-related faults when scanning the vehicle.
- ✔ Delayed Engagement: A noticeable delay when shifting from Park into Drive or Reverse.
- ✔ Poor Fuel Economy: Inefficient shifting and torque converter lockup issues can cause a significant drop in MPG.
- ✔ Complete Loss of Shifting: In severe cases, the vehicle may not shift gears at all.
The Plug-and-Play Solution: VIN-Programmed for Your Vehicle
The biggest challenge when replacing modern automotive electronics is programming. This module eliminates that hurdle. We pre-program each 2007-2009 Saturn Aura TCM to your vehicle’s specific Vehicle Identification Number (VIN) before it ships. This ensures that the module has the latest GM software and is perfectly calibrated for your vehicle’s engine, transmission, and tire size. There is no need for an expensive trip to the dealership for programming—it’s a true plug-and-play installation.
This module is a direct replacement for a wide range of GM part numbers, including 24252114, 24234503, 24230461, 24234274, 24235754, and more. It is engineered to meet or exceed original equipment standards, providing a dependable and lasting repair for your vehicle’s transmission issues.
Installation Information
For the Saturn Aura, the TCM is typically located on the front of the left-hand frame rail in the engine compartment. The installation process is straightforward for a DIY mechanic with basic tools. Simply disconnect the battery, unplug the electrical connectors from the old module, unbolt it, and install the new one in its place. Reconnect the connectors and the battery. While our VIN programming handles the critical setup, it’s always a good practice to use a scan tool to clear any stored DTCs after installation.
Frequently Asked Questions
Is this TCM pre-programmed for my 2008 Saturn Aura?
Yes, absolutely. During checkout, you will provide your vehicle’s VIN. We then program the module with the latest GM software specific to your car, ensuring it works correctly right out of the box with no additional programming needed.
Will this module fix a P0700 trouble code?
A P0700 code is a general code indicating the TCM has detected a fault. While this module often resolves the root cause of a P0700, it’s essential to ensure there are no underlying wiring or solenoid issues. However, if you’re experiencing shifting problems along with the code, a failing TCM is the most common culprit.
Where is the TCM located on a 2007-2009 Saturn Aura?
On the Saturn Aura, the Transmission Control Module is mounted on the front portion of the driver’s side (LH) frame rail, located in the engine compartment.
Do I need to send my old part back?
No, there is no core charge for this part. You can keep your old module, which saves you the time and hassle of a return shipment.
What is the warranty on this part?
This transmission control module comes with a one-year warranty, giving you peace of mind and confidence in your purchase.