Restore Your Buick’s Smooth Ride
Is your 2006-2007 Buick Rendezvous struggling with harsh shifts, delayed gear engagement, or suddenly going into limp mode? These are classic signs that the brain of your transmission, the Transmission Control Module (TCM), is failing. The TCM is responsible for orchestrating every gear change, ensuring your engine’s power is delivered smoothly and efficiently. When it malfunctions, it can make your reliable SUV feel unpredictable and unsafe. This replacement T42 TCM, part number 24239926, is the definitive solution to restore your vehicle’s factory performance and your peace of mind.
From the Diagnostic Bay
We once had a 2007 GMC Envoy come in with classic transmission failure symptoms: banging into gear and a check engine light with a handful of solenoid codes. The owner had already spent a few hundred dollars replacing two shift solenoids based on a forum post, but the problem persisted. After a quick diagnostic, we confirmed the solenoids were receiving erratic signals. The root cause wasn’t the solenoids themselves, but the TCM that controlled them. We installed a VIN-programmed T42 module, cleared the codes, and the Envoy shifted like it just rolled off the assembly line. It’s a crucial reminder: always diagnose the controller before replacing the components it manages. This simple step could save you hundreds in unnecessary parts and labor.
Symptoms of a Failing Rendezvous TCM
A faulty TCM can manifest in various ways, often being misdiagnosed as an internal transmission failure. Before considering a costly transmission replacement, check if your vehicle is exhibiting any of these common symptoms:
- ✔ Harsh or erratic shifting, causing the vehicle to jerk or bang into gear.
- ✔ The vehicle gets stuck in a single gear (often 2nd or 3rd), a condition known as “limp mode.”
- ✔ Check Engine Light or Transmission Warning Light is illuminated on your dashboard.
- ✔ Diagnostic trouble codes (DTCs) are present, such as P0700 (Transmission Control System Malfunction) or various solenoid-specific codes (P0750, P0751, etc.).
- ✔ Delayed engagement when shifting from Park to Drive or Reverse.
- ✔ Complete failure to upshift or downshift, leading to poor acceleration and high RPMs.
- ✔ A noticeable decrease in fuel economy due to inefficient gear management.
The Superior Solution: A Pre-Programmed 2006-2007 Rendezvous TCM
This isn’t just another replacement part; it’s a complete, ready-to-install solution. The biggest hurdle when replacing modern electronic modules is the need for expensive dealership programming. We eliminate that step entirely. By providing your vehicle’s VIN at checkout, we program the module with the latest GM software specific to your Rendezvous. This ensures perfect communication between the TCM, the engine control module (ECM), and the transmission itself. The result is a plug-and-play installation that restores optimal shift points, torque converter lockup strategy, and overall transmission health without any additional costs or trips to a mechanic.
Built to strict OEM specifications, this module guarantees reliability and longevity. It directly replaces a wide range of original part numbers, including 24252114, 24234503, 24239926, and more, making it a versatile and dependable choice for your repair.
Simple Installation to Get You Back on the Road
Designed for a straightforward installation, this TCM can be replaced with basic hand tools in under 30 minutes. On the 2006-2007 Buick Rendezvous, the TCM is conveniently located inside the air cleaner box. Simply disconnect the battery, remove the air cleaner assembly, unplug the electrical connectors from the old module, and swap in the new one. Once installed, reconnect the battery and use a standard OBD2 scan tool to clear any stored transmission codes. With no core charge, you don’t have to worry about the hassle and expense of returning your old part.
Frequently Asked Questions
What does ‘VIN Programmed’ mean for me?
It means your new TCM arrives ready for installation right out of the box. We load it with your vehicle’s specific software using your VIN, so it communicates perfectly with your Rendezvous’s systems. This eliminates the need for expensive and time-consuming programming at a dealership.
Is this a true plug-and-play part?
Yes. Because the module is pre-programmed to your VIN, the installation process is as simple as disconnecting the old module and plugging this one in. After installation, you should clear any old diagnostic trouble codes with a scan tool.
Where is the TCM located on my 2006-2007 Buick Rendezvous?
On this specific model, the Transmission Control Module is located inside the air cleaner box in the engine compartment for easy access.
Will this fix a P0700 trouble code?
A P0700 code is a general fault code indicating the TCM has detected a problem. While this module often resolves the root cause of a P0700 (such as internal TCM failure), you should always diagnose any other accompanying codes to ensure there aren’t other issues, like a faulty sensor or solenoid.
Is there a core charge or do I need to send my old part back?
No. We do not require a core return for this part. You can keep or dispose of your old module without any additional charges or hassle.