If you’re experiencing frustrating and unpredictable transmission problems in your 2006-2009 SAAB 9-7X, you’re not alone. Issues like harsh shifting, getting stuck in gear, or a persistent check engine light can make driving a stressful experience. This VIN-programmed T42 Transmission Control Module (TCM), part number 24240449, is the definitive, reliable solution to restore your vehicle’s smooth operation and get you back on the road with confidence.
As the electronic brain of your automatic transmission, the TCM is responsible for every gear change. When it fails, the symptoms can range from merely annoying to completely debilitating. Our module is meticulously prepared with your vehicle’s specific VIN, ensuring it arrives ready for a true plug-and-play installation. This eliminates the need for expensive and time-consuming programming at a dealership, saving you both time and money.
Is Your SAAB 9-7X Showing These Transmission Faults?
A failing TCM can manifest in several ways. If you’re noticing any of the following, it’s a strong indicator that your module needs replacement:
- ✔ Harsh, jerky, or delayed gear shifts.
- ✔ The vehicle is stuck in “limp mode” (often 2nd or 3rd gear).
- ✔ Check Engine Light or Transmission Warning Light is on with codes like P0700, P0750, or other solenoid-related DTCs.
- ✔ Failure to upshift or downshift properly, leading to poor acceleration.
- ✔ A noticeable drop in fuel economy or signs of the transmission overheating.
- ✔ Complete loss of communication with the module, preventing the vehicle from starting or shifting out of park.
Case Study: A Tricky Diagnosis
I remember a 2008 SAAB 9-7X that came into my shop with a maddeningly intermittent issue. The owner complained of sudden, violent shifts, but only after driving for 30 minutes. We couldn’t replicate it on short test drives. There were no hard codes, just a pending P0700. After checking the fluid and wiring harness, experience pointed to the TCM. Heat soak was causing internal components to fail. We installed one of our pre-programmed T42 modules, and the problem was solved permanently. It’s a classic failure mode for these units, and this part is the direct fix.
A Straightforward Guide to Installation
Replacing the 2006-2009 SAAB 9-7X TCM is a job most DIY enthusiasts can handle in their own driveway in under 30 minutes. No specialized tools are required.
- Safety First: Always disconnect the negative terminal from your vehicle’s battery before starting any electrical work.
- Locate the Module: In the SAAB 9-7X, the TCM is typically found in the engine compartment on the left-hand (driver’s) side.
- Disconnect and Remove: Carefully unplug the electrical connectors from the old module. 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 connectors. Ensure they click into place.
- Final Steps: Reconnect the battery terminal. While the module is plug-and-play, it’s good practice to use a basic scan tool to clear any stored fault codes from the vehicle’s memory.
Verified Vehicle Compatibility
This T42 TCM is the correct fit for your 2006-2009 SAAB 9-7X TCM replacement and is also compatible with a wide range of other General Motors vehicles. It is interchangeable with part numbers 24252114, 24234503, 24240449, and more. A partial fitment list includes:
- ✔ SAAB 9-7X (2006-2009) – LH engine compartment
- ✔ Chevrolet Silverado & GMC Sierra 1500 (2007-2013) – Next to battery
- ✔ Chevrolet Tahoe & GMC Yukon (2007-2009) – Next to battery
- ✔ Chevrolet Trailblazer & GMC Envoy (2006-2009) – LH engine compartment
- ✔ Chevrolet Impala (2006-2011) – Lower air cleaner housing
- ✔ Hummer H3 (2008-2010) – RH rear engine compartment
- ✔ Cadillac DTS (2006-2011) – RH front engine compartment
- ✔ Chevrolet Express & GMC Savana Vans (2006-2014) – RH engine compartment
Frequently Asked Questions
Do I need to take this part to a dealer for programming?
No. We program the module to your vehicle’s VIN before shipping. It arrives ready for installation, with no additional programming or dealer visits required.
Is there a core charge for my old part?
There is absolutely no core charge. You can keep your old part or dispose of it at your convenience, making the process hassle-free.
What if my vehicle’s part number is slightly different?
This module replaces many different GM service numbers. Please check our detailed interchange list or contact us with your vehicle’s VIN, and we will verify compatibility for you.
What is the warranty on this TCM?
This module is backed by our one-year warranty, giving you peace of mind and protection against defects.
Will this fix a P0700 trouble code?
A P0700 code is a general transmission fault request. It is often triggered by a failing TCM or a specific solenoid issue that the TCM has detected. In many cases, replacing a faulty TCM will resolve the root cause of the P0700 code.