Restore Your Buick’s Signature Smooth Ride
Is your 2006-2009 Buick Allure suffering from harsh, erratic shifting, getting stuck in gear, or displaying a persistent check engine light? These are classic signs of a failing Transmission Control Module (TCM), the electronic brain of your automatic transmission. A faulty TCM can disrupt the comfortable, quiet ride you expect from your Buick, turning every drive into a stressful experience. This VIN-programmed T42 TCM is the definitive solution, designed to restore your vehicle’s performance and reliability without a costly trip to the dealership for programming.
Common Symptoms & Your Solution
If you’re experiencing any of the following issues, a failing TCM is the likely culprit. This module is engineered to be the direct solution for these problems:
- Harsh or Delayed Shifting: Abrupt gear changes, banging into gear, or a noticeable lag when the transmission shifts.
- Limp Mode Activation: The vehicle is stuck in a single gear (usually 2nd or 3rd) with significantly reduced power.
- Warning Lights: The Check Engine Light or a specific transmission warning light is illuminated on your dashboard.
- Diagnostic Trouble Codes (DTCs): Your mechanic finds codes like P0700 (Transmission Control System Malfunction), P0750-P0758 (Shift Solenoid errors), or other transmission-related faults.
- Poor Fuel Economy: Inefficient shifting patterns caused by the faulty module can lead to a noticeable decrease in your MPG.
Installing this pre-programmed 2006-2009 Buick Allure Transmission Control Module directly resolves these issues, restoring the precise, seamless shifting your car had when it was new.
Features & Benefits
- ✔ Plug & Play Installation: This module arrives pre-programmed to your vehicle’s specific VIN. This critical step ensures perfect communication between the TCM and your Buick’s other systems, eliminating the need for expensive dealership programming.
- ✔ Restored Performance: By precisely managing shift points, torque converter lockup, and line pressure, this TCM brings back the smooth acceleration and quiet operation you value in your Allure.
- ✔ Lasting Reliability: Built to meet or exceed OEM specifications, this module is constructed with high-quality components to ensure long-term durability and dependable performance.
- ✔ This unit is backed by our one-year replacement warranty. Drive with confidence knowing your purchase is protected.
- ✔ No Core Charge: We don’t require you to send back your old, faulty part, saving you time, hassle, and additional shipping costs.
From the Technician’s Bench: The VIN Programming Difference
“Over 20 years, I’ve seen countless drivers try to save a few bucks with a generic, un-programmed TCM from a salvage yard. It almost never ends well. The car either won’t start, shifts worse than before, or throws a dozen new error codes. That’s because the TCM is tied directly to your car’s unique identity—its VIN. Our process of programming this 2006-2009 Buick Allure Transmission Control Module before it ships is the single most important step. It ensures the module works in perfect harmony with your engine and ABS systems from the moment you plug it in. It’s the difference between a frustrating weekend of guesswork and a successful, 30-minute repair that truly fixes the problem.”
Frequently Asked Questions
Do I need to have this module programmed by a dealer?
Absolutely not. We pre-program the module to your vehicle’s specific VIN before shipping. It will arrive ready for a plug-and-play installation, saving you hundreds in dealership fees.
Where is the TCM located on my 2006-2009 Buick Allure?
On the Buick Allure for these model years, the Transmission Control Module is typically found inside or attached to the lower air cleaner housing in the engine compartment.
Will this fix a P0700 trouble code?
Yes, a P0700 code is a general fault code indicating the TCM has detected a problem. A failing TCM is a very common cause of this code, and replacing it with this quality part is often the correct solution to clear it and other related codes.
Is this a difficult part to install?
The physical installation is straightforward for someone with basic mechanical skills and typically takes under an hour. It involves disconnecting the battery, unplugging the electrical connectors, and unbolting the old module. However, if you are not comfortable working on your vehicle, we always recommend professional installation.
What tools are required for installation?
You will typically only need basic hand tools, such as a socket set and ratchet, to access and replace the module. No special diagnostic equipment is required for the installation itself since the part is pre-programmed.