Restore Smooth Shifting to Your Buick Rendezvous
If your 2006 or 2007 Buick Rendezvous is suffering from harsh shifting, getting stuck in gear, or has an illuminated check engine light, a failing Transmission Control Module (TCM) is the likely culprit. As a technician with over two decades of experience, I’ve seen how a faulty TCM can make a reliable vehicle feel unpredictable and unsafe. This isn’t just an annoyance; it’s a critical failure that impacts your vehicle’s performance and fuel economy. This VIN-programmed T42 TCM, part number 24240449, is the direct-fit, reliable solution to get your Rendezvous driving like new again, without the exorbitant costs and scheduling hassles of a dealership visit.
Case Study: A Tricky Diagnosis
A customer brought in their 2006 Buick Rendezvous, complaining it was stuck in what felt like third gear and wouldn’t shift. The check engine light was on, and they were worried about a catastrophic transmission failure. My scan tool pulled a generic P0700 (Transmission Control System Malfunction) code. In my experience, this code often points directly to the TCM itself. After a quick check of the wiring harness for damage, we confirmed the module was the issue. Instead of a multi-day repair at the dealer, we installed one of our pre-programmed TCMs. The entire job took less than an hour, and the customer drove away with smooth shifting restored, saving hundreds of dollars.
What Are the Signs of a Failing 2006-2007 Rendezvous TCM?
The TCM is the brain of your automatic transmission, controlling everything from shift points to torque converter lockup. When it fails, the symptoms are hard to ignore. This module is engineered to solve those problems permanently. A faulty module can cause significant drivability issues, so addressing it promptly is key to preventing further damage to your transmission’s mechanical components.
Is Your Rendezvous Showing These Telltale Signs?
- ✔ Harsh, erratic, or delayed gear shifts that make driving uncomfortable.
- ✔ Vehicle enters “limp mode,” often getting stuck in 2nd or 3rd gear.
- ✔ Check Engine Light or Transmission Warning Light is illuminated on the dash.
- ✔ Diagnostic Trouble Codes (DTCs) are present, such as P0700, P0750, or other solenoid-related faults.
- ✔ A noticeable decrease in fuel efficiency due to improper gear management.
- ✔ Complete failure to shift up or down, or a loss of communication with the module.
DIY Fix: Your Rendezvous TCM Installation Guide
One of the best features of this module is its simple, plug-and-play installation. Because we program it to your vehicle’s VIN before shipping, you can perform the replacement yourself with basic hand tools in under 30 minutes. For the 2006-2007 Buick Rendezvous, the TCM is conveniently located right under the air cleaner box.
- Safety First: Always disconnect the negative terminal from your vehicle’s battery to prevent electrical shorts and reset the system.
- Locate the Module: Open the hood and find the air cleaner assembly. The TCM is situated directly underneath it.
- Remove the Old TCM: Carefully disconnect the electrical connectors. Note their orientation. Then, unbolt the module from its mounting bracket.
- Install the New Module: Mount your new, pre-programmed TCM in place of the old one. Reconnect the electrical connectors securely.
- Final Steps: Reinstall the air cleaner box and reconnect the battery terminal. While the system often resets itself, it’s good practice to use a basic OBD2 scan tool to clear any stored fault codes. Start the vehicle and enjoy restored performance!
Verified Compatibility for Your Vehicle
This T42 Transmission Control Module is a direct replacement for part number 24240449 and is guaranteed to fit your 2006-2007 Buick Rendezvous. It is also compatible with a wide range of other General Motors vehicles. Please verify the part number or contact us with your VIN to ensure perfect fitment.
Frequently Asked Questions
Do I need to take my vehicle to a dealership for programming?
No. This Transmission Control Module is delivered to you fully programmed to your vehicle’s specific VIN. It’s ready for installation right out of the box, saving you time and money on dealer programming fees.
What tools are required for installation?
You’ll only need basic hand tools, such as a socket set to remove the air cleaner box and the module’s mounting bolts, and a wrench to disconnect the battery terminal. No specialized equipment is necessary.
Is there a core charge for my old part?
No, there is absolutely no core charge. You can keep your old part or dispose of it at your convenience without the hassle of returning it.
How does the VIN programming process work?
During checkout, you will provide your vehicle’s 17-digit VIN. Our technicians use this information to load the latest GM-certified software and specific calibration files for your vehicle onto the module before it ships.
Will this fix a P0700 trouble code?
In many cases, yes. The P0700 code is a general fault code indicating the TCM has detected a problem. If the TCM itself is the source of the failure, replacing it with this pre-programmed unit will resolve the code and the underlying issue.