Restore Smooth Shifting to Your Saturn Aura
If your 2007, 2008, or 2009 Saturn Aura is suffering from jerky shifting, getting stuck in gear, or has an illuminated check engine light, a failing Transmission Control Module (TCM) is the most likely culprit. As the central computer for your automatic transmission, the TCM dictates every gear change and torque converter operation. When it fails, it can mimic a catastrophic transmission failure, causing significant driving issues. This direct-fit T42 TCM, part number 24234503, is the reliable, cost-effective solution you need.
We take the guesswork and dealership expense out of the equation. Each module is expertly programmed to your vehicle’s specific VIN before shipping. This ensures it communicates perfectly with your car’s other systems right out of the box, providing a true plug-and-play repair. Get your Aura driving like new again without the high cost of a dealer visit.
Case Study: A Tricky Diagnosis
A customer brought in a 2008 Saturn Aura with a complaint that stumped a few other shops. The car would drive perfectly for 10-15 minutes, then suddenly slam into gear and get stuck in 3rd (limp mode). The check engine light would come on with a generic P0700 code. After it cooled down, it would run fine again. In my shop, I’ve seen this exact heat-related failure in dozens of GM T42 modules. The internal circuit boards develop micro-fractures that expand when hot, breaking the connection. We installed one of our VIN-programmed TCMs, and the problem was solved instantly. It’s a classic symptom that points directly to this part, saving the customer from an unnecessary, expensive transmission teardown.
Is Your Saturn Aura Showing These Transmission Warning Signs?
- ✔️ Harsh, slamming, or erratic gear shifts.
- ✔️ The vehicle refuses to shift out of a low gear (often called ‘limp mode’).
- ✔️ Delayed engagement when shifting from Park to Drive or Reverse.
- ✔️ Check Engine Light or Transmission Warning Light is on with codes like P0700, P0750, or other solenoid-related faults.
- ✔️ A noticeable drop in fuel economy due to inefficient shifting.
- ✔️ Complete loss of communication with the transmission module.
A Straightforward Guide to Your TCM Installation
For the Saturn Aura, this is a job most DIYers can handle in under 30 minutes with basic tools. The module is located on the front of the left-hand frame rail.
- Safety First: Disconnect the negative terminal from your car’s battery to prevent any electrical shorts and help reset the vehicle’s computer systems.
- Locate the Module: Find the TCM mounted to the LH frame rail in the front of the engine bay.
- Disconnect and Remove: Carefully unclip the electrical connectors. Be gentle with the locking tabs. Then, unbolt the module from its mounting bracket.
- Install the New TCM: Bolt the new, pre-programmed module into place and securely reconnect the electrical harnesses. You should hear a ‘click’ as they lock.
- Final Steps: Reconnect the battery terminal. Start the vehicle and allow it to idle for a few minutes. While our programming clears most faults, it’s good practice to use a basic OBD2 scanner to clear any stored DTCs.
Guaranteed Fitment for Your Vehicle
This module is a direct replacement for part number 24234503 and other interchangeable numbers. While this page is focused on the 2007-2009 Aura TCM, this part also fits a wide range of GM vehicles. Please verify your specific model below:
This part will fit these makes and models with these options:
AURA 07-09 Transmission; (LH frame rail front)
ALLURE 06-09 Transmission; (lower air cleaner housing)
AVALANCHE 1500 07-08 Transmission; (next to battery)
CANYON 08-12 Transmission; (RH rear engine compartment)
COBALT 06-10 Transmission; (LH strut tower)
COLORADO 08-12 Transmission; (RH rear engine compartment)
DTS 06-11 Transmission; (RH front engine compartment)
ENVOY 06-07 Transmission; (LH engine compartment), (8 cylinder)
ENVOY 08-09 Transmission; (LH engine compartment)
EXPRESS 1500 VAN 06-14 Transmission; (RH engine compartment)
EXPRESS 2500 VAN 06-14 Transmission; (RH engine compartment)
EXPRESS 3500 VAN 06-14 Transmission; (RH engine compartment)
G5 07-10 Transmission; (LH strut tower)
G6 06-10 Transmission; (LH strut tower)
GRAND PRIX 06-08 Transmission; (lower air cleaner housing)
HHR 06-11 Transmission; (LH engine compartment)
HUMMER H3 08-10 Transmission; (RH rear engine compartment)
IMPALA 06-11 Transmission; (lower air cleaner housing)
ION 06-07 Transmission; (behind LH strut tower)
LACROSSE 06-09 Transmission; (lower air cleaner housing)
LUCERNE 06-07 Transmission; (4.6L), (LH engine compartment)
LUCERNE 08-11 Transmission; (LH engine compartment)
MALIBU 06-10 Transmission; (LH frame rail)
MONTE CARLO 06-07 Transmission; (lower air cleaner housing)
MONTANA 06-09 Transmission; (LH strut tower)
PURSUIT 06 Transmission; (LH strut tower)
SAAB 9-7X 06-09 Transmission; (LH engine compartment)
SAVANA 1500 VAN 06-14 Transmission; (RH engine compartment)
SAVANA 2500 VAN 06-14 Transmission; (RH engine compartment)
SAVANA 3500 VAN 06-14 Transmission; (RH engine compartment)
SIERRA 1500 PICKUP 07 Transmission; (new style, smooth door skin), (next to battery)
SIERRA 1500 PICKUP 08-13 Transmission; (next to battery), w/o hybrid option
SILVERADO 1500 PICKUP 07 Transmission; (new style, smooth door skin), (next to battery)
SILVERADO 1500 PICKUP 08-13 Transmission; (next to battery), w/o hybrid option
TAHOE 07-09 Transmission; (next to battery), w/o auxiliary oil cooler pump
TRAILBLAZER 06-07 Transmission; (LH engine compartment), (8 cylinder)
TRAILBLAZER 08-09 Transmission; (LH engine compartment)
VUE 07-08 Transmission; 2.4L, (LH front engine compartment)
VUE 09 Transmission; 2.4L, (LH front engine compartment)
VUE 10 Transmission
YUKON 07-09 Transmission; (next to battery), w/o auxiliary oil cooler pump
YUKON XL 1500 07-08 Transmission; (next to battery)
Do I need to have this module programmed by the dealer?
Do I need to have this module programmed by the dealer?
No. This is the biggest benefit of our service. We program the module to your car’s VIN before it ships, so it’s ready for installation right out of the box. This saves you time and the typical $150+ programming fee at a dealership.
Will this fix my car being stuck in limp mode?
Yes, in most cases. A faulty TCM is one of the most common causes for a GM vehicle to enter ‘limp mode’ (stuck in 2nd or 3rd gear). Replacing it with a functioning, programmed unit typically resolves this issue immediately.
Is this a difficult part to install myself?
Not at all. For the Saturn Aura, the TCM is easily accessible in the engine bay on the LH frame rail. With basic hand tools, most people can swap the part in under 30 minutes. Just disconnect the battery, unbolt the old unit, and plug in the new one.
Is there a core charge?
No, we do not require a core charge. You can keep your old part, so there’s no need to worry about the hassle and expense of shipping it back.