If your 2006-2007 Buick Rendezvous is suffering from delayed shifts, getting stuck in gear, or throwing transmission codes, you’ve likely pinpointed the culprit: a failing Transmission Control Module (TCM). As a technician with over two decades of experience, I’ve seen countless GM vehicles sidelined by faulty T42 modules. The symptoms can range from a minor annoyance, like a harsh 1-2 shift, to a major problem like the vehicle entering limp mode, making it unsafe and unreliable. This isn’t just a part; it’s the solution to restoring your vehicle’s drivability and your peace of mind.
This isn’t a generic, one-size-fits-all component. We pre-program this module specifically to your Rendezvous’s Vehicle Identification Number (VIN) before it ships. This critical step ensures that the TCM communicates flawlessly with your vehicle’s engine computer and other systems, just as the original did. You get OEM-level performance and reliability without the exorbitant cost and hassle of a dealership visit for programming. It’s designed to be a direct, effective fix for the underlying electronic issues that cause those frustrating transmission problems.
From the Diagnostic Bay
A customer brought in a 2007 Rendezvous with a classic complaint: ‘It bangs into gear and sometimes won’t shift past 2nd.’ The check engine light was on, with a P0700 (Transmission Control System Malfunction) and a few solenoid-specific codes. My first thought is always to check the fluid and wiring, which were fine. Instead of chasing electrical ghosts for hours, we recommended this VIN-programmed TCM. The customer was a bit skeptical about an online part, but the alternative was a much higher bill and a longer wait at the dealer. They agreed. The swap took less than 30 minutes, and after clearing the codes, the Rendezvous shifted like it just rolled off the assembly line. It’s a textbook example of how a quality, pre-programmed part can save time, money, and diagnostic headaches.
Is Your Rendezvous Showing These Symptoms?
A failing TCM can manifest in several ways. If you’re experiencing any of the following, this module is the likely solution for your 2006-2007 Rendezvous TCM issues:
- ✔ Harsh, erratic, or delayed gear shifts.
- ✔ Vehicle is stuck in one gear (often called ‘limp mode’).
- ✔ Check Engine Light or Transmission Warning Light is illuminated.
- ✔ Diagnostic Trouble Codes (DTCs) such as P0700, P0750, or other transmission-related faults are present.
- ✔ A sudden drop in fuel economy.
- ✔ The transmission seems to slip between gears or fails to engage.
A Straightforward Guide to Installation
For the DIY enthusiast, this is a very manageable repair. On the 2006-2007 Buick Rendezvous, the TCM is conveniently located under the air cleaner box, making it accessible with basic hand tools.
- Safety First: Always disconnect the negative terminal from your vehicle’s battery to prevent electrical shorts and help reset the system.
- Locate the Module: Remove the air cleaner housing to gain clear access to the old TCM.
- Disconnect and Remove: Carefully unplug the electrical connectors. Note their orientation. Then, unbolt the old module from its mounting bracket.
- Install the New TCM: Mount your new, pre-programmed module in place of the old one and securely reconnect the electrical harnesses.
- Final Steps: Reinstall the air cleaner box and reconnect the battery terminal. While the system may reset, it’s best practice to use a basic OBD2 scan tool to clear any stored fault codes.
Verified Vehicle Compatibility
This module, part number 24239224, is the correct fit for the 2006-2007 Buick Rendezvous. It is also a direct replacement for a wide range of other GM vehicles. Please verify your part number or consult the list below. This part is interchangeable with service numbers: 24252114, 24234503, 24230461, 24234274, 24235340, 24235754, 24238856, 24239926, and more.
What does ‘VIN Programmed’ actually mean for my Rendezvous?
It means we load your vehicle’s specific VIN into the module before shipping. This ensures it has the correct software and calibrations for your Rendezvous’s transmission and engine, making it a true plug-and-play part that requires no further dealership intervention.
Do I need any special tools for this installation?
No special tools are required. A basic socket set to remove the air cleaner box and the module’s mounting bolts is typically all you need. The entire process should take less than an hour for most DIYers.
Is there a core charge for my old part?
No, there is no core charge. You can keep your old part, so you don’t have to worry about the cost or hassle of shipping it back.
Will this fix a P0700 code?
A P0700 code is a general fault code indicating the TCM has detected a problem. While this module often resolves the root cause, it’s always wise to scan for other specific codes (like for solenoids or sensors) to confirm the TCM is the primary failure point.