Restore Crisp, Reliable Shifting to Your Saturn Aura
If your 2007-2009 Saturn Aura is suffering from delayed shifts, getting stuck in gear, or throwing transmission codes, the problem is very likely a failing Transmission Control Module (TCM). As a technician with over 20 years of experience, I’ve seen these T42 modules cause headaches for countless drivers. The internal electronics can degrade from heat and vibration, leading to communication errors that the vehicle’s main computer interprets as a major transmission fault. This often results in a check engine light and the dreaded ‘limp mode’.
Don’t let a faulty module convince you that you need a costly transmission rebuild. This direct-replacement 2007-2009 Saturn Aura TCM, part number YNXS, is the definitive solution. We take the guesswork and dealership hassle out of the equation by pre-programming it to your vehicle’s specific VIN. This ensures that it communicates flawlessly with your engine computer and other systems right out of the box, restoring the smooth, predictable performance you expect. It’s a professional-grade fix that you can perform right in your own driveway.
Is Your Saturn Aura Exhibiting These Transmission Woes?
- ✔️ Harsh, banging shifts or jarring gear engagement.
- ✔️ The vehicle is stuck in one gear (often 2nd or 3rd) and won’t shift up or down.
- ✔️ An illuminated Check Engine Light or Transmission Warning Light is on.
- ✔️ Your scan tool shows Diagnostic Trouble Codes (DTCs) like P0700, P0750, or other solenoid-related faults.
- ✔️ A noticeable drop in fuel economy or a feeling of sluggish acceleration.
- ✔️ Complete loss of communication with the transmission module.
A Technician’s Notebook
I remember a customer with a 2008 Saturn Aura who was quoted over $3,000 for a transmission rebuild. His car was shifting violently between first and second gear and had a P0700 code. I hooked up my professional scan tool and saw communication dropouts from the TCM. Instead of a full rebuild, we installed one of our VIN-programmed T42 modules. The total repair time was under an hour, and the car shifted like it just rolled off the factory floor. He saved thousands by correctly diagnosing the electronic failure instead of unnecessarily replacing good mechanical parts.
A Straightforward Guide to Your TCM Installation
- âś” Safety First: Before you begin, disconnect the negative terminal from your vehicle’s battery to prevent any electrical shorts.
- âś” Locate the Module: On the Saturn Aura, the TCM is typically located on the front of the left-hand frame rail in the engine bay.
- âś” Disconnect and Remove: Carefully unclip the wiring harness connectors. Then, unbolt the module from its mounting bracket. There are usually two or three small bolts holding it in place.
- âś” Install the New TCM: Mount the new, pre-programmed module onto the bracket and securely tighten the bolts. Reconnect the wiring harnesses, ensuring they click firmly into place.
- âś” Final Steps: Reconnect the negative battery terminal. While the system may reset on its own, it’s best practice to use a basic OBD2 scan tool to clear any stored transmission codes. Start the vehicle and test drive to confirm smooth shifting.
Verified Vehicle Compatibility
This T42 TCM is guaranteed to fit your 2007-2009 Saturn Aura. It is also a direct replacement for a wide range of other General Motors vehicles, ensuring OEM-level function and reliability. This module is interchangeable with part numbers including 24252114, 24234503, 24230461, 24240400, and YNXS. While this list is extensive, always verify your part number or contact us with your VIN to ensure perfect fitment.
- Saturn Aura: 2007-2009 (Transmission; LH frame rail front)
- Chevrolet Cobalt & Pontiac G5/G6: 2006-2010 (Transmission; LH strut tower)
- Chevrolet Impala & Monte Carlo: 2006-2011 (Transmission; lower air cleaner housing)
- Chevrolet HHR: 2006-2011 (Transmission; LH engine compartment)
- GMC Sierra & Chevrolet Silverado: 2007-2013 (Transmission; next to battery)
- GMC Yukon & Chevrolet Tahoe: 2007-2009 (Transmission; next to battery)
- And many more GM models from 2006-2014.
Frequently Asked Questions
Do I need to take my car to a dealer for programming?
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 a dealership visit.
Is this a difficult part to install for a DIYer?
Not at all. For most vehicles, including the Saturn Aura, this is a very straightforward job requiring only basic hand tools. It’s typically located in an accessible part of the engine bay and can be swapped in under 30 minutes.
What is a core charge?
A core charge is a deposit that is refunded when you send back your old part. We do not require a core charge for this module, so you can keep your old part without any hassle.
Will this fix a P0700 trouble code?
A P0700 code is a general fault request from the TCM to the main computer. In many cases, a failing TCM is the root cause. Replacing it with this programmed unit will often resolve the P0700 code and any other related transmission codes.
What if I order the wrong part?
We’re here to help! To guarantee a perfect match, please provide your VIN when ordering. If you have any doubts, contact our expert support team before you purchase, and we’ll ensure you get the correct module for your vehicle.