Restore Your Saturn’s Smooth Drive and Reliability
If your 2007-2009 Saturn Aura is suffering from jarring shifts, getting stuck in gear, or throwing transmission codes, you’re not just dealing with an annoyance—you’re facing a classic case of Transmission Control Module (TCM) failure. As a technician with over two decades of experience, I’ve seen how a faulty TCM can make a perfectly good car feel unreliable. This T42 Transmission Control Module, part number 24238856, is the definitive, hassle-free solution to get your Aura’s transmission performing like new again.
This isn’t just a replacement part; it’s a complete fix. We pre-program the module to your vehicle’s specific VIN before shipping. This crucial step ensures that it communicates flawlessly with your car’s engine computer and transmission, eliminating the need for an expensive and time-consuming trip to the dealership for programming. It arrives ready for a true plug-and-play installation, restoring precise gear changes, proper torque converter lockup, and dependable performance.
Case Study: The Frustrating Saturn Aura Fix
A customer brought in a 2008 Saturn Aura with a complaint that was driving them crazy: intermittent harsh shifting and the car occasionally refusing to shift out of 2nd gear (limp mode). They’d already replaced a shift solenoid with no luck. A quick scan showed a generic P0700 code. From experience, I knew these symptoms often point directly to the TCM. The internal electronics on these T42 modules can fail from heat and vibration over time, causing erratic signals. We installed one of our VIN-programmed modules, and the fix was immediate. The total time on the lift was under an hour, saving the customer hundreds compared to a dealership diagnosis and repair.
Is Your Saturn Aura Showing These Telltale Signs?
A failing TCM can manifest in several ways. If you’re experiencing any of the following, this module is the likely solution for your 2007-2009 Aura Transmission Module problems:
- ✔ Harsh, slamming, or erratic gear shifts.
- ✔ The vehicle is stuck in “limp mode” (usually 2nd or 3rd gear).
- ✔ Check Engine Light or Transmission Warning Light is on.
- ✔ Diagnostic Trouble Codes (DTCs) like P0700, P0750, or other solenoid-related faults are present.
- ✔ Delayed engagement when shifting from Park to Drive or Reverse.
- ✔ A sudden drop in fuel economy.
- ✔ Complete failure to shift gears.
DIY Installation: A Simple 30-Minute Fix
You don’t need to be a master mechanic to replace this module. For the Saturn Aura, the process is straightforward. Here’s a simple guide:
- Safety First: Disconnect the negative terminal from your car’s battery to prevent any electrical shorts and to help reset the system.
- Locate the TCM: On your 2007-2009 Saturn Aura, the transmission module is typically located on the front of the left-hand (driver’s side) frame rail.
- Disconnect and Remove: Carefully unplug the electrical connectors. Press the release tabs firmly. Then, unbolt the module from its mounting bracket.
- Install the New Module: Bolt the new, pre-programmed TCM into place and securely reconnect the electrical harnesses. You should hear a click as they lock in.
- Final Steps: Reconnect the battery terminal. While the module is plug-and-play, it’s good practice to use a basic OBD2 scanner to clear any stored fault codes from the previous failure. Start the car and enjoy smooth shifting!
Verified Fitment for Your General Motors Vehicle
While this is a direct-fit solution for the 2007-2009 Aura Transmission Module, it is also compatible with a wide range of other GM vehicles. Please verify your model and location below. This part is interchangeable with service numbers 24242391, 24234503, 24252114, and many more.
- Saturn Aura (2007-2009): Transmission; (LH frame rail front)
- Chevrolet Cobalt / Pontiac G5 / G6 (2006-2010): Transmission; (LH strut tower)
- Chevrolet HHR (2006-2011): Transmission; (LH engine compartment)
- Chevrolet Impala / Monte Carlo (2006-2011): Transmission; (lower air cleaner housing)
- Chevrolet Silverado / GMC Sierra (2007-2013): Transmission; (next to battery)
- Chevrolet Tahoe / GMC Yukon (2007-2009): Transmission; (next to battery)
- And many more GM, Buick, Cadillac, Hummer, and Saab models.
Frequently Asked Questions
What does ‘VIN Programmed’ actually mean for me?
It means we load your vehicle’s unique Vehicle Identification Number (VIN) and the latest GM software onto the module before we ship it. This makes it a true plug-and-play part, saving you from a mandatory, costly programming session at a dealership.
Is this part difficult to install myself?
Not at all for most DIYers. With basic hand tools, the installation typically takes less than 30 minutes. The location on the Aura is accessible on the driver’s side frame rail.
Will this fix a P0700 trouble code?
A P0700 code is a general fault request from the TCM to the main engine computer. While it doesn’t pinpoint the exact issue, it very often accompanies a failing TCM. Replacing the module is a common and effective way to resolve this and related transmission codes.
Is there a core charge for my old part?
No. We do not require you to send your old module back. There is no core charge, saving you time and hassle.