Restore Smooth Shifting to Your SAAB 9-7X
If you’re dealing with the frustration of a transmission that won’t shift correctly, gets stuck in gear, or triggers warning lights on your 2006-2009 SAAB 9-7X, a failing Transmission Control Module (TCM) is the most likely culprit. As the electronic brain of your automatic transmission, the T42 TCM governs every shift point, torque converter clutch engagement, and pressure regulation. When it fails, drivability suffers. This OEM-quality replacement, part number 24235340, is the definitive solution to restore your vehicle’s performance and reliability.
A Technician’s Notebook: The Intermittent 9-7X
I remember a 2008 SAAB 9-7X that came into my bay with a complaint that stumped two other shops. The owner described random, harsh 1-2 shifts and occasional failure to downshift when coming to a stop. Of course, by the time it got to me, it was behaving perfectly. No active codes, just a history P0700 (Transmission Control System Malfunction). After checking the basics—fluid level, connector integrity—I suspected the TCM. These modules, especially the T42 generation, can develop internal hairline cracks on the circuit board from years of heat cycles. This creates intermittent connections that don’t always set a specific solenoid code, leading to the ghost-like issues the customer described. We installed a VIN-programmed TCM, and the problem never returned. It’s a classic failure I’ve seen hundreds of times on this GM platform.
Is Your SAAB 9-7X Exhibiting These Symptoms?
A faulty TCM can manifest in several ways, often mistaken for internal transmission failure. Before you consider a costly transmission rebuild, check if you’re experiencing any of these common signs:
- âś” Harsh, slamming, or delayed gear shifts.
- âś” The vehicle feels stuck in one gear (often called “limp mode”).
- âś” Check Engine Light or Transmission Warning Light is illuminated.
- âś” Diagnostic Trouble Codes (DTCs) are present, such as P0700, P0750, P0753, P0758, or other solenoid-related faults.
- âś” A sudden drop in fuel economy or a transmission overheating message.
- âś” No communication with the TCM when using a diagnostic scan tool.
Why a Pre-Programmed 2006-2009 SAAB 9-7X TCM is the Smart Choice
The single biggest advantage of this module is our expert VIN programming service. We flash the module with the latest GM software specific to your SAAB 9-7X’s Vehicle Identification Number before it ships. This means no expensive trips to the dealership for programming. It arrives at your door ready for a true plug-and-play installation, saving you time and money. This process ensures the TCM communicates perfectly with your vehicle’s Engine Control Module (ECM) and other systems for optimal shift strategy and performance from the moment you install it.
A Straightforward Guide to Installation
Replacing the TCM on your SAAB 9-7X is a job most DIY enthusiasts can complete in under 30 minutes with basic hand tools. The module is conveniently located in the engine compartment.
- Safety First: Disconnect the negative terminal from your vehicle’s battery to prevent any electrical shorts and to help reset the vehicle’s adaptive memory.
- Locate the Module: 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. Press the release tabs firmly and pull straight out. 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 negative battery terminal. Start the vehicle and allow it to idle for a few minutes. If you have a basic scan tool, it’s good practice to clear any stored DTCs. Take the vehicle for a test drive to confirm smooth shifting has been restored.
Verified Vehicle Compatibility
While this listing is for the 2006-2009 SAAB 9-7X, this T42 TCM is also a direct replacement for a wide range of GM vehicles. This module is interchangeable with part numbers 24252114, 24234503, 24230461, 24234274, 24235754, and more. Below is a partial list of compatible models:
- âś” SAAB 9-7X: 2006-2009
- âś” Chevrolet Trailblazer (8 cyl): 2006-2009
- âś” GMC Envoy (8 cyl): 2006-2009
- âś” Chevrolet Silverado & GMC Sierra (1500/2500): 2007-2013 (various configurations)
- âś” Chevrolet Tahoe & GMC Yukon: 2007-2009
- âś” Hummer H3: 2008-2010
- âś” Cadillac DTS: 2006-2011
- …and many other GM cars, trucks, and SUVs from 2006-2014. Please verify your part number for an exact match.
Frequently Asked Questions
Do I need to have this module programmed by a dealer?
No. We handle all the programming for you. Simply provide your vehicle’s VIN during checkout, and the module will arrive ready to install right out of the box.
Is this a difficult part to install myself?
Not at all. For most vehicles, including the SAAB 9-7X, it’s a simple bolt-on part located in the engine bay. With basic tools, most people can swap it in less than 30 minutes.
What is the warranty on this part?
This Transmission Control Module comes with a one-year warranty, giving you confidence and peace of mind in your repair.
Will this fix a P0700 trouble code?
A P0700 code is a general fault code indicating the TCM has detected a problem. In a vast majority of cases where the TCM itself is the source of the fault, replacing it with our pre-programmed unit will resolve the code and the underlying issue.
Is there a core charge for my old part?
No, there is no core charge. You can keep your old part, so there’s no need to worry about shipping it back.