Is Your Saturn Aura Shifting Erratically?
If you’re experiencing frustrating transmission issues like harsh shifting, delayed gear engagement, or your vehicle is stuck in limp mode, a failing Transmission Control Module (TCM) is the most likely culprit. The TCM is the electronic brain of your automatic transmission, responsible for orchestrating smooth gear changes and ensuring optimal performance. When it fails, it can lead to poor fuel economy, dashboard warning lights, and an unreliable driving experience. This replacement GM T42 TCM is the definitive solution for your 2007-2009 Saturn Aura and a wide range of other GM vehicles.
Expert Pro Tip: Before beginning the installation, always disconnect the negative terminal of your vehicle’s battery. This not only prevents electrical shorts but also helps reset the vehicle’s adaptive learning parameters, allowing the new module to establish fresh communication with the powertrain control module (PCM) and other systems for a smoother transition.
Your Direct-Fit Saturn Aura Transmission Module Solution
This isn’t just any replacement part; it’s a precision-programmed component designed to restore your vehicle’s factory performance. We pre-program each module to your specific Vehicle Identification Number (VIN), ensuring it arrives ready for a straightforward, plug-and-play installation. This critical step eliminates the need for expensive dealership programming, saving you time and money. By flashing the module with the latest GM software updates, we ensure it corrects common factory flaws and provides the most reliable operation for your 4-speed automatic transmission, such as the 4L60E or 4L65E.
Symptoms of a Failing T42 TCM
- ✔ Unpredictable or harsh gear shifts.
- ✔ Vehicle stuck in one gear (limp mode).
- ✔ Check Engine Light or Transmission Warning Light is on.
- ✔ Diagnostic Trouble Codes (DTCs) like P0700, P0750, or other solenoid-related codes are present.
- ✔ Delayed engagement when shifting from Park to Drive or Reverse.
- ✔ Poor fuel efficiency and potential transmission overheating.
- ✔ Complete loss of communication with the transmission.
Key Features & Benefits
- ✔ VIN Programmed: Arrives ready for installation with no extra programming required.
- ✔ Restores Performance: Eliminates shifting problems and restores smooth, efficient operation.
- ✔ OEM Quality: Built to meet or exceed original equipment specifications for lasting durability.
- ✔ Broad Compatibility: A direct replacement for service numbers 24242391, 24234503, 24252114, and many more, fitting dozens of GM models.
- ✔ No Core Charge: Keep your old part, saving you the hassle and expense of a core return.
Installation is simple for a DIY mechanic or a professional technician. The module is typically located in the engine compartment—often on the LH frame rail in the Saturn Aura, next to the battery in trucks like the Silverado, or under the air cleaner box in sedans like the Impala. The entire process can usually be completed in under 30 minutes. Regain control of your vehicle’s performance and drive with confidence again. This module is the reliable fix for your transmission woes.
Frequently Asked Questions
What does “VIN Programmed” mean for this Saturn Aura Transmission Module?
VIN programming means we load the module with your vehicle’s specific software and calibration files from GM before we ship it. This makes the unit a true plug-and-play part, allowing it to communicate perfectly with your car’s engine and other systems without needing a trip to the dealership for expensive flashing.
Will this fix a P0700 trouble code?
A P0700 code is a general transmission fault code, indicating that the TCM has detected a problem and requested the Check Engine Light to be turned on. While a faulty TCM is a very common cause for this code, it’s essential to have the vehicle scanned for other transmission-specific codes (e.g., P0751, P0756) to confirm the diagnosis. In most cases where the TCM is the root cause, this replacement module will resolve the issue.
Is this part difficult to install myself?
For most individuals with basic mechanical skills, the installation is straightforward. It typically involves disconnecting the battery, locating the old module in the engine bay, unplugging the electrical connectors, unbolting it, and then reversing the process with the new part. The entire job usually takes less than 30 minutes.
Do I need to send my old part back?
No, there is absolutely no core charge for this part. You can keep your old module, which saves you the time, cost, and hassle of packaging and shipping it back.
How can I be sure this fits my vehicle?
This module fits a 2007-2009 Saturn Aura and many other GM vehicles from 2006-2014. The best way to confirm is to match the part number on your existing module to one of the interchangeable numbers listed, such as 24235753, 24242391, or 24252114. You can also use our website’s vehicle selector or contact our support team with your VIN for guaranteed fitment.