End Your Transmission Headaches for Good
If your 2006-2007 Buick Rendezvous is suffering from jerky shifting, getting stuck in gear, or has an illuminated check engine light, a faulty Transmission Control Module (TCM) is the most likely culprit. As a mechanic with over two decades of experience, I’ve seen these symptoms countless times. Drivers come into the shop frustrated with unpredictable vehicle behavior and worried about a costly transmission rebuild. The good news is that the fix is often much simpler and more affordable. This direct-fit T42 TCM, part number 24239926, is the reliable solution you need to restore your vehicle’s performance and peace of mind.
From the Diagnostic Bay: A Rendezvous Stuck in Limp Mode
A customer recently brought in their ’07 Rendezvous, explaining it wouldn’t shift past 2nd gear and the transmission warning light was on. A quick scan pulled a P0700 (Transmission Control System Malfunction) and a few solenoid circuit codes. Instead of immediately quoting a new transmission, we checked the TCM. After 15 years of heat cycles under the hood, the internal circuits had failed. We installed a VIN-programmed module just like this one, cleared the codes, and had the customer back on the road in under an hour with their transmission shifting like new. This is a common story for these vehicles.
Is Your Rendezvous Showing These Telltale Signs?
A failing TCM doesn’t just degrade your driving experience; it can cause further damage to your transmission if left unchecked. Look out for these common indicators that your module needs replacement:
- ✔ Harsh, slamming, or erratic gear shifts.
- ✔ The vehicle is stuck in a single gear, often called “limp mode.”
- ✔ Delayed engagement when shifting from Park to Drive or Reverse.
- ✔ Check Engine Light or Transmission Warning Light is illuminated with codes like P0700, P0750, or other solenoid-related DTCs.
- ✔ Poor acceleration and a noticeable drop in fuel economy.
- ✔ Complete loss of communication with the module, preventing shifting altogether.
DIY Installation: A Simple 30-Minute Fix
One of the best features of this module is that it arrives pre-programmed to your vehicle’s specific VIN. This eliminates the need for expensive dealership programming, saving you time and money. For the 2006-2007 Rendezvous TCM, the module is conveniently located under the air cleaner box, making it accessible for any DIY enthusiast. Follow these simple steps:
- Safety First: Disconnect the negative terminal from your vehicle’s battery to prevent any electrical shorts.
- Locate the Module: Remove the air cleaner box assembly to gain clear access to the old TCM.
- Disconnect and Remove: Carefully unplug the electrical connectors from the module. Then, unbolt the module from its mounting bracket.
- Install the New TCM: Mount the new module onto the bracket, securely reconnect the electrical harnesses, and reinstall the air cleaner box.
- Final Steps: Reconnect the battery terminal. While the system may reset, it’s best practice to use a basic OBD2 scanner to clear any stored fault codes. Start the engine and take a test drive to confirm smooth shifting.
Verified Fitment For Your Vehicle
This transmission control module is a guaranteed fit for the following vehicle. Please ensure your vehicle’s options match the description below.
- Buick Rendezvous: 2006-2007 (Located under the air cleaner box)
This part is also interchangeable with a wide range of other GM vehicles and part numbers, including 24252114, 24234503, 24239224, and more, ensuring broad compatibility for your repair needs.
Frequently Asked Questions
Do I need to take this part to a dealer for programming?
No. We program the module to your vehicle’s VIN before shipping. It arrives ready for plug-and-play installation, with no extra programming or dealer visits required.
Is there a core charge for my old part?
Absolutely not. You can keep your old module or recycle it at your convenience. We don’t require a core return, making the process hassle-free.
What tools are needed for the installation?
For a Buick Rendezvous, you will typically only need basic hand tools, such as a socket set and a screwdriver, to remove the air cleaner box and the module’s mounting bolts.
What if I have a different GM vehicle with the same symptoms?
This T42 TCM fits a wide variety of GM cars, trucks, and SUVs from 2006-2014, including the Impala, Tahoe, Sierra, and many others. Please check the full fitment list or contact us with your VIN to confirm compatibility.