If your 2006-2009 Saab 9-7X is suffering from unpredictable shifting, getting stuck in gear, or has a check engine light glaring at you, the culprit is often a failing Transmission Control Module (TCM). As a technician with over 20 years of experience, I’ve seen firsthand how a faulty TCM can mimic a major transmission failure, causing unnecessary stress and diagnostic headaches. This T42 TCM, part number 24230461, is the definitive solution, designed to restore the crisp, smooth shifting your vehicle had from the factory.
The biggest hurdle with electronic module replacement has always been the need for expensive dealership programming. We eliminate that completely. By providing your vehicle’s VIN at checkout, we program the module with the latest GM software updates specific to your Saab 9-7X. This means it arrives at your door ready for a true plug-and-play installation. You get to skip the dealer appointment, the programming fees, and the hassle, getting your SUV back to peak performance faster and more affordably.
Is Your Saab 9-7X Exhibiting These Transmission Issues?
- ✔ Harsh, banging shifts or delayed gear engagement.
- ✔ Vehicle is stuck in “limp mode” (usually 2nd or 3rd gear) with limited power.
- ✔ 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 and fuel economy.
- ✔ The transmission feels like it’s slipping between gears.
- ✔ Intermittent loss of communication with the transmission module.
Case Study: A Tricky Diagnosis
A customer brought in their ’07 Saab 9-7X, convinced the transmission was shot. It was stuck in 3rd gear, and they’d been quoted over $3,000 for a rebuild by another shop. After plugging in my scan tool, I saw the classic P0700 (Transmission Control System Malfunction) and a U0101 (Lost Communication with TCM) code. Instead of a catastrophic internal failure, the TCM itself had failed—a very common issue on these GM platforms due to heat and vibration in the engine bay. We installed one of our pre-programmed modules, and in under an hour, the vehicle was shifting perfectly. The customer saved thousands and drove away with a reliable fix.
DIY-Friendly Installation Guide: Back on the Road in 30 Minutes
Replacing the 2006-2009 Saab 9-7X TCM is a straightforward job that most DIYers can handle with basic tools. The module is conveniently located in the engine compartment, making access easy.
- Safety First: Disconnect the negative terminal from your vehicle’s battery to prevent any electrical shorts and help reset the system.
- Locate the TCM: On the Saab 9-7X, the TCM is typically found in the left-hand (driver’s side) of the engine compartment.
- Disconnect and Remove: Carefully unplug the electrical connectors from the old module. 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. Reconnect the electrical connectors, ensuring they click securely into position.
- Final Steps: Reconnect the battery terminal. While the module is plug-and-play, it’s good practice to use a basic OBD2 scan tool to clear any stored fault codes from the ECU. Start the vehicle and enjoy restored performance!
Verified Vehicle Compatibility List
This T42 TCM is a direct replacement for part number 24230461 and other service numbers. While it is guaranteed to fit your 2006-2009 Saab 9-7X TCM, it is also compatible with a wide range of other General Motors vehicles. Please confirm your model is listed below:
- SAAB 9-7X 06-09 Transmission; (LH engine compartment)
- BUICK: Allure (06-09), LaCrosse (06-09), Lucerne (06-11), Rainier (06-07), Rendezvous (06-07)
- CADILLAC: DTS (06-11)
- CHEVROLET: Avalanche 1500 (07-08), Cobalt (06-10), Colorado (08-12), Express Van (06-14), HHR (06-11), Impala (06-11), Malibu (06-10), Monte Carlo (06-07), Silverado Pickup (07-13), SSR (05-06), Suburban 1500 (07-08), Tahoe (07-09), Trailblazer (06-09), Uplander (06-09)
- GMC: Canyon (08-12), Envoy / Envoy XL (06-09), Savana Van (06-14), Sierra Pickup (07-13), Yukon / Yukon XL 1500 (07-08)
- HUMMER: H3 (08-10)
- PONTIAC: G5 (07-10), G6 (06-10), Grand Prix (06-08), Montana (06-09), Pursuit (06)
- SATURN: Aura (07-09), Ion (06-07), Vue (07-10)
Frequently Asked Questions
What does ‘VIN Programmed’ actually mean?
It means we load the module with your vehicle’s unique Vehicle Identification Number (VIN) and the latest factory software before shipping. This ensures it communicates perfectly with your engine computer and other systems, just like the original part, without needing a trip to the dealer for setup.
Will this part fix my transmission codes like P0700?
Yes, if the codes are being caused by a faulty module. A P0700 is a general code indicating the TCM has detected a problem. Replacing a failed TCM is the direct fix for this and other related communication or solenoid codes.
Is this a difficult part for a DIY mechanic to install?
Not at all. This is one of the easier electronic components to replace. It’s located in the engine bay with easy access, requires only basic hand tools, and typically takes less than 30 minutes. Our pre-programming makes the electronic side of the job completely hassle-free.
Do I need to send my old TCM back? Is there a core charge?
No, there is no core charge for this part. You can keep your old module or dispose of it responsibly without any extra steps or fees.
What kind of warranty is included?
This module is backed by our one-year, hassle-free warranty. We stand by the quality and reliability of our programmed electronics, giving you confidence and peace of mind in your repair.