Is your 2006-2007 Buick Rendezvous struggling with unpredictable shifting, getting stuck in gear, or throwing transmission codes? You’re not alone. These are classic signs of a failing Transmission Control Module (TCM), the electronic brain of your automatic transmission. A faulty TCM can turn a reliable family vehicle into a source of daily frustration and concern. This VIN-programmed T42 TCM, part number 24239224, is the definitive, hassle-free solution to restore your vehicle’s smooth operation and your peace of mind.
Forget about expensive dealership visits and the uncertainty of programming fees. We handle the complex part for you. Simply provide your vehicle’s VIN during checkout, and we will program this module with the latest GM software specific to your Rendezvous. This ensures it works perfectly right out of the box—a true plug-and-play repair that gets you back on the road quickly and safely.
A Technician’s Notebook
I recently had a 2007 Rendezvous in the shop with a very tricky issue. The owner complained of intermittent harsh 1-2 shifts and occasionally getting stuck in 3rd gear (limp mode), but only after driving for 30-40 minutes in summer heat. The codes were generic—P0700 (Transmission Control System Malfunction). After checking the wiring and solenoids, which all tested fine, I suspected the TCM. On the Rendezvous, the TCM is located under the air cleaner box, an area prone to heat soak. This heat was causing an internal fault in the original module to surface only when hot. Swapping in a pre-programmed 2006-2007 Rendezvous TCM solved the problem instantly. It’s a common failure point I’ve seen dozens of times on these GM platforms.
Is Your Rendezvous Showing These Telltale Signs?
A failing TCM can manifest in several ways. If you’re experiencing any of the following, this module is the likely solution:
- ✔ Harsh, slamming, or erratic gear shifts.
- ✔ The vehicle is stuck in “limp mode” (usually 2nd or 3rd gear).
- ✔ Check Engine Light or Transmission Warning Light is on.
- ✔ Diagnostic Trouble Codes (DTCs) are present, such as P0700, P0750, or other solenoid-related codes.
- ✔ Delayed engagement when shifting from Park to Drive or Reverse.
- ✔ A sudden drop in fuel economy.
- ✔ Complete failure to shift gears.
DIY-Friendly Installation: Get Your Rendezvous Shifting Smoothly
This repair is straightforward enough for a confident DIYer. For the 2006-2007 Buick Rendezvous, the TCM is located directly under the air cleaner assembly. The entire process typically takes less than 30 minutes.
- Safety First: Always disconnect the negative terminal from your vehicle’s battery before starting any electronic component replacement.
- Access the Module: Remove the engine cover and the air cleaner box assembly to gain clear access to the TCM.
- Disconnect and Remove: Carefully unplug the electrical connectors from the old module. Then, unbolt the module from its mounting bracket.
- Install the New Module: Bolt the new, pre-programmed TCM into place and securely reconnect the electrical connectors. You’ll hear a click as they lock in.
- Reassemble and Finalize: Reinstall the air cleaner box and engine cover. Reconnect the battery terminal. Start the vehicle and use a basic scan tool to clear any stored transmission codes.
Verified Fitment for Your Vehicle
This module is a direct replacement for part number 24239224 and is guaranteed to fit your 2006-2007 Buick Rendezvous. It is also compatible with a wide range of other GM vehicles that use the T42 TCM, including models like the Buick Allure, LaCrosse, Lucerne, Rainier; Chevrolet Impala, Monte Carlo, HHR; Pontiac G6, Grand Prix; and Saturn Vue. This part is interchangeable with service numbers 24252114, 24234503, 24239224, and others, ensuring broad compatibility and a reliable fix.
Frequently Asked Questions
What is VIN programming and why do I need it?
VIN programming loads your vehicle’s specific software and calibrations onto the module before it ships. This makes the part plug-and-play, eliminating the need for an expensive trip to the dealership for programming. It ensures the transmission shifts correctly based on your Rendezvous’s specific engine and options.
Will this fix my check engine light and P0700 code?
If the root cause of your Check Engine Light and DTC P0700 (or other transmission-related codes) is a faulty TCM, then yes, this part is designed to be the definitive solution. After installation, you should clear the codes with a scan tool.
Is this a difficult part to install myself?
For most DIYers with basic tools, this is a very manageable job. On the Rendezvous, it’s located under the air cleaner box. The key is to disconnect the battery first. The entire swap can often be done in under 30 minutes.
Do I need to return my old TCM?
No, there is no core charge for this module. You can keep your old part, so there’s no hassle with return shipping or waiting for a core refund.