If your 2006-2009 Buick Allure is suffering from harsh shifts, getting stuck in gear, or throwing transmission codes, you’ve come to the right place. As a technician with over two decades of experience under the hood, I’ve seen countless drivers frustrated by these exact issues. The problem often points directly to a failing Transmission Control Module (TCM)—the electronic brain that manages your automatic transmission’s every move. A faulty TCM doesn’t just make for an unpleasant drive; it can cause premature wear on your transmission and leave you stranded. This is the reliable, straightforward solution you need.
This T42 Transmission Control Module, part number 24252114, is the definitive fix for your Buick Allure. Forget about expensive dealership visits and the hassle of post-installation programming. We handle the critical step for you. Before we ship it, we program the module to your vehicle’s specific VIN, loading it with the latest GM software updates. This ensures it communicates perfectly with your car’s powertrain right out of the box. You’re not just buying a part; you’re getting a plug-and-play solution engineered to restore the smooth, predictable performance your Allure had when it was new.
From the Diagnostic Bay
I remember a 2008 Buick Allure that came into my shop. The owner was fed up. His car would slam into gear, sometimes refuse to shift past 2nd, and the check engine light was a permanent fixture on his dash. He’d already replaced a couple of solenoids with no luck. A quick scan showed a P0700 (Transmission Control System Malfunction) and some erratic solenoid circuit codes. Experience told me the solenoids were likely fine; the TCM was giving them bad commands. We installed one of our VIN-programmed TCMs, and the difference was immediate. The car shifted like silk. This isn’t just a theoretical fix—it’s a real-world solution I’ve implemented hundreds of times.
Is Your Buick Allure Showing These Telltale Signs?
A failing 2006-2009 Allure TCM can manifest in several ways. If you’re experiencing any of the following, a faulty module is the likely culprit:
- ✔ Harsh, jerky, or delayed gear shifts that disrupt your drive.
- ✔ The vehicle enters “limp mode,” often stuck in 2nd or 3rd gear.
- ✔ Check Engine Light or Transmission Warning Light is illuminated on the dashboard.
- ✔ Diagnostic Trouble Codes (DTCs) are present, such as P0700, P0750, or other solenoid-related faults.
- ✔ Complete failure to upshift or downshift, leading to poor acceleration and fuel economy.
- ✔ Unexplained loss of communication with the transmission module.
A Straightforward Guide to Installation
One of the best parts of this solution is its simplicity. For the DIY enthusiast, this is a job you can confidently tackle in your own garage in under 30 minutes. No specialized tools are needed.
- Safety First: Always begin by disconnecting the negative terminal from your vehicle’s battery. This prevents electrical shorts and helps reset the vehicle’s computer systems.
- Locate the Module: On your 2006-2009 Buick Allure, the TCM is conveniently located under the lower air cleaner housing. You will need to remove the air cleaner assembly to access it.
- Disconnect and Remove: Carefully unplug the electrical connectors from the old TCM. Then, unbolt the module from its mounting bracket and remove it from the vehicle.
- Install the New TCM: Mount the new, pre-programmed module in place of the old one and securely fasten the bolts. Reconnect the electrical connectors, ensuring they click into place.
- Final Steps: Reinstall the air cleaner housing and reconnect the negative battery terminal. While our programming resolves most codes, it’s good practice to use a basic OBD2 scanner to clear any stored DTCs before starting the car.
Verified Compatibility for Your GM Vehicle
While this listing is tailored for the 2006-2009 Allure TCM, this module, part number 24252114, is a direct replacement for a wide range of General Motors vehicles. It is interchangeable with part numbers like 24234503, 24230461, 24235340, and others. It fits models including:
- ✔ Buick Allure (2006-2009) – located at the lower air cleaner housing
- ✔ Chevrolet Impala (2006-2011) – located at the lower air cleaner housing
- ✔ Chevrolet Silverado & GMC Sierra (2007-2013) – typically next to the battery
- ✔ Chevrolet Tahoe & GMC Yukon (2007-2009) – typically next to the battery
- ✔ Pontiac G6 (2006-2010) – located at the LH strut tower
- ✔ And many more GM cars, trucks, and SUVs from 2006-2014.
Frequently Asked Questions
What does VIN programming mean for my Buick Allure?
VIN programming means we load your car’s unique Vehicle Identification Number and the latest GM-certified software onto the TCM before shipping. This makes the module a direct plug-and-play part, eliminating the need for a costly trip to the dealership for programming. It ensures perfect communication between the engine and transmission for optimal performance.
Do I need to send my old TCM back (core charge)?
No, there is no core charge for this part. You can keep your old module or dispose of it, making the process faster and more convenient for you.
Will this fix a P0700 trouble code?
Yes, in sitztions where the TCM itself is the root cause of the failure. The code P0700 is a general fault code indicating the TCM has detected a problem. Replacing a faulty TCM is often the correct and final solution to clear this code and the related specific transmission codes.
Is this an OEM part?
This is a high-quality replacement part built to meet or exceed original equipment manufacturer (OEM) standards for fit, form, and function. It is designed for long-lasting reliability and is backed by our one-year warranty.