Restore Smooth, Reliable Shifting to Your Saturn Aura
If you’re dealing with the headaches of a faulty transmission—like harsh shifting, getting stuck in gear, or a persistent check engine light—you’re not alone. The Transmission Control Module (TCM) is the brain of your automatic transmission, and when it fails, it can make your 2007-2009 Saturn Aura feel unpredictable and unsafe. This OEM-quality T42 TCM, part number 24256960, is the definitive solution. We pre-program it to your vehicle’s specific VIN, so it arrives ready for a true plug-and-play installation, eliminating the need for an expensive trip to the dealership for programming.
From the Diagnostic Bay
I recently had a 2008 Saturn Aura come into the shop that was giving its owner fits. The car was stuck in what felt like third gear (limp mode), the transmission warning light was on, and the scanner pulled a generic P0700 code. The owner was worried about a costly transmission rebuild. After a quick check of the basics, I suspected the TCM. These T42 modules are known to fail internally over time. We ordered one of our VIN-programmed units, and less than 30 minutes after it arrived, the car was back on the road, shifting perfectly. It’s a common repair, and having a pre-programmed module turns a potential multi-day dealership headache into a simple, straightforward fix.
Is Your Saturn Aura Showing These Telltale Signs?
A failing TCM can manifest in several ways. If you’re experiencing any of the following, it’s a strong indicator that your module needs replacement. A new 2007-2009 AURA Transmission Control Module can resolve these issues for good.
- ✔ Unpredictable or harsh gear changes.
- ✔ The vehicle is stuck in limp mode (usually 2nd or 3rd gear).
- ✔ Check Engine Light or Transmission Warning Light is illuminated with codes like P0700, P0750, or other solenoid-related DTCs.
- ✔ Delayed engagement when shifting from Park to Drive or Reverse.
- ✔ A sudden drop in fuel economy.
- ✔ Complete loss of communication with the TCM, preventing shifting.
A Straightforward Guide to Installation
For the confident DIYer or professional technician, replacing the TCM is a quick job. For the 2007-2009 Saturn Aura, the module is typically located on the front left frame rail, making it accessible from underneath the vehicle or within the engine bay.
- Safety First: Always disconnect the negative terminal from your vehicle’s battery before starting any electronic component replacement. This prevents electrical shorts and helps reset the vehicle’s systems.
- Locate the Old Module: On the Saturn Aura, you will find the TCM mounted to the front portion of the driver’s side frame rail.
- Disconnect and Remove: Carefully unplug the electrical connectors. Note the tab locations to avoid damaging them. Then, unbolt the module from its mounting bracket.
- Install the New Module: Bolt the new, VIN-programmed TCM into place. Securely reconnect the electrical harnesses—you should hear a click as they lock in.
- Final Steps: Reconnect the battery terminal. While our programming handles the heavy lifting, it’s best practice to use a basic OBD2 scan tool to clear any stored fault codes from the system. Start the vehicle and take it for a test drive to confirm smooth shifting.
Verified Vehicle Compatibility
This T42 Transmission Control Module is a direct-fit replacement for a wide range of General Motors vehicles. While this listing is specific to the 2007-2009 AURA Transmission Control Module, it also fits the following models. Please verify the location noted for your specific vehicle.
Saturn:
AURA 07-09 (LH frame rail front)
ION 06-07 (behind LH strut tower)
VUE 07-10 (LH front engine compartment)
Chevrolet:
AVALANCHE 1500 07-08 (next to battery)
COBALT 06-10 (LH strut tower)
COLORADO 08-12 (RH rear engine compartment)
EXPRESS VANS 06-14 (RH engine compartment)
HHR 06-11 (LH engine compartment)
IMPALA 06-11 (lower air cleaner housing)
MALIBU 06-10 (LH frame rail)
MONTE CARLO 06-07 (lower air cleaner housing)
SILVERADO PICKUPS 07-13 (next to battery)
SSR 05-06 (front LH frame)
SUBURBAN 1500 07-08 (next to battery)
TAHOE 07-09 (next to battery)
TRAILBLAZER 06-09 (LH engine compartment)
GMC:
CANYON 08-12 (RH rear engine compartment)
ENVOY 06-09 (LH engine compartment)
SAVANA VANS 06-14 (RH engine compartment)
SIERRA PICKUPS 07-13 (next to battery)
YUKON & YUKON XL 07-09 (next to battery)
Buick, Cadillac, Pontiac, Hummer, Saab:
ALLURE 06-09, LACROSSE 06-09 (lower air cleaner housing)
LUCERNE 06-11 (LH engine compartment)
DTS 06-11 (RH front engine compartment)
G5 07-10, G6 06-10, PURSUIT 06 (LH strut tower)
GRAND PRIX 06-08 (lower air cleaner housing)
HUMMER H3 08-10 (RH rear engine compartment)
SAAB 9-7X 06-09 (LH engine compartment)
…and other models listed in the full fitment guide.
Frequently Asked Questions
Do I need to do any programming or flashing myself?
No. This module is delivered to you fully programmed to your vehicle’s VIN. It is a plug-and-play solution that requires no additional dealership or specialty tool programming.
Is there a core charge for my old part?
No, we do not require you to send back your old module. There is no core charge, saving you time and return shipping costs.
Will this fix a P0700 diagnostic trouble code?
A P0700 code is a general fault request from the TCM to the main engine computer (ECM) to turn on the check engine light. While this module often fixes the root cause of the P0700, you should scan for more specific transmission codes (e.g., P07xx series) to confirm the diagnosis.
What tools do I need for installation?
Typically, you will only need basic hand tools such as a socket set and ratchet to remove the mounting bolts and a flathead screwdriver to help release the connector tabs. No special electronic tools are needed.