Restore Smooth, Reliable Shifting to Your Buick Rendezvous
If your 2006-2007 Buick Rendezvous is suffering from erratic shifting, getting stuck in gear, or throwing transmission-related trouble codes, the culprit is often a failing Transmission Control Module (TCM). As an automotive diagnostician with over two decades of experience, I’ve seen firsthand how a faulty TCM can mimic the symptoms of a major transmission failure, leading to unnecessary and costly repairs. This replacement T42 TCM, part number 24230461, is the direct, intelligent solution to restore your vehicle’s performance and your peace of mind.
This isn’t just a part; it’s a complete fix. We pre-program each module to your vehicle’s specific VIN, ensuring it communicates flawlessly with your engine computer and transmission components right out of the box. This eliminates the need for expensive dealership programming and relearn procedures, making it a perfect project for both seasoned mechanics and determined DIYers. By precisely managing shift points, torque converter clutch engagement, and line pressure, this module will make your Rendezvous drive like it just rolled off the assembly line.
Case Study: The Ghost in the Transmission
A customer brought in their ’07 Rendezvous with a classic complaint: intermittent, bone-jarring shifts and occasionally getting stuck in 3rd gear (limp mode). They were worried their transmission was shot. After hooking up my scan tool, I saw a generic P0700 code and a few solenoid circuit codes that kept changing. Instead of immediately quoting a new transmission, I checked the TCM. These T42 modules, especially when exposed to years of engine heat cycles, can develop internal circuit board issues. We installed a VIN-programmed 2006-2007 Rendezvous TCM, and the problems vanished instantly. The customer saved thousands and drove away with a perfectly shifting vehicle—a testament to diagnosing the electronics before condemning the hardware.
Is Your Rendezvous Exhibiting These Telltale Signs?
A failing TCM can cause a cascade of frustrating issues. If you’re experiencing any of the following, it’s highly likely your module is the problem:
- ✔ Harsh, delayed, or unpredictable gear shifts.
- ✔ The vehicle is stuck in a single gear (often called “limp mode”).
- ✔ Check Engine Light or Transmission Warning Light is illuminated.
- ✔ Diagnostic Trouble Codes (DTCs) such as P0700, P0750, P0753, P0758, or other solenoid-related faults are present.
- ✔ Poor acceleration and a noticeable drop in fuel economy.
- ✔ Complete loss of communication with the transmission.
Your 30-Minute Path to Smoother Shifts
Installing your new 2006-2007 Rendezvous TCM is a straightforward job you can do at home. For the Buick Rendezvous, the module is conveniently located under the air cleaner box, making access simple.
- Safety First: Disconnect the negative terminal from your vehicle’s battery to prevent any electrical shorts and to help reset the onboard systems.
- Locate the Old Module: Remove the air cleaner housing to access the TCM. It’s a silver box with several large electrical connectors.
- Swap the Modules: Carefully unplug the wiring harnesses from the old TCM. Unbolt it from its mounting bracket and set it aside. Bolt the new module in its place.
- Reconnect and Finalize: Securely plug the wiring harnesses into your new, pre-programmed TCM. Reinstall the air cleaner box and reconnect the negative battery terminal.
- Clear and Drive: While not always necessary, using a basic OBD2 scan tool to clear any stored transmission codes is good practice. Your Rendezvous is now ready for a test drive!
Verified Vehicle Compatibility
This module is a direct replacement for part number 24230461 and other interchangeable service numbers. While it is guaranteed to fit the 2006-2007 Buick Rendezvous, it is also compatible with a wide range of other GM vehicles. Please verify your part number or contact us with your VIN to ensure perfect fitment.
Frequently Asked Questions
Does this module need to be programmed by a dealer?
No. We pre-program the module to your vehicle’s VIN before shipping. It arrives ready for plug-and-play installation, with no additional programming or dealer visits required.
What is a TCM and what does it do?
The Transmission Control Module (TCM) is the electronic brain of your automatic transmission. It receives data from various sensors and uses it to control shift solenoids, line pressure, and torque converter lockup for optimal performance and efficiency.
Will this fix a P0700 trouble code?
A P0700 code is a general fault code indicating the TCM has detected a problem and has requested the Check Engine Light be turned on. Often, replacing a faulty TCM will resolve the underlying issue causing the P0700 code and related specific codes (like for shift solenoids).
Where is the TCM located on my 2006 Rendezvous?
On the 2006-2007 Buick Rendezvous, the Transmission Control Module is located in the engine bay, situated under the air cleaner box for protection and access.
Is there a core charge for my old part?
No, there is no core charge. You can keep your old module, so there’s no need to worry about the hassle and expense of shipping it back.