Restore Your Buick’s Smooth, Reliable Performance
Is your Buick Allure suffering from harsh, erratic shifting, getting stuck in gear, or displaying a check engine light? These are classic signs of a failing Transmission Control Module (TCM), a critical component that acts as the brain for your automatic transmission. Don’t let frustrating transmission problems ruin your driving experience. This professionally programmed GM T42 TCM is the definitive solution, engineered to restore the smooth, quiet, and dependable ride you expect from your Buick.
Common Symptoms & Your Solution
A faulty TCM can cause a cascade of issues that make your vehicle feel unreliable and unsafe. If you’re experiencing any of the following, this module is your answer:
- Abrupt, harsh, or delayed 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) such as P0700, P0750, or other solenoid-related codes
- Failure to upshift or downshift properly
- A sudden drop in fuel economy
This pre-programmed 2006-2009 Buick Allure transmission control module arrives ready for a direct, plug-and-play installation, eliminating the need for an expensive and time-consuming trip to the dealership for programming.
Features & Benefits
- ✔ VIN-Programmed for Your Allure: We program the module to your vehicle’s specific VIN number, ensuring perfect communication with your car’s systems and optimal shift strategy right out of the box.
- ✔ Restores Smooth Shifting: By precisely managing shift points, line pressure, and torque converter lockup, this TCM eliminates harsh engagement and restores the original factory ride quality.
- ✔ Plug-and-Play Installation: No special tools or dealer software required. For the Buick Allure, this module is typically found in the lower air cleaner housing, making it an accessible, straightforward replacement.
- ✔ Long-Term Reliability: Built to stringent OEM specifications, this module is designed to resolve common electronic failures and provide lasting performance, giving you confidence on the road.
- ✔ This unit is backed by our one-year replacement warranty.
Expert Insight: Why VIN Programming is Non-Negotiable
Many sellers offer generic or non-programmed TCMs, but this is a critical mistake for modern vehicles like your Buick. The T42 module relies on precise software calibrations that are unique to your vehicle’s VIN. These calibrations account for engine size, axle ratio, and tire size to ensure flawless shifting. Installing a non-programmed unit will almost certainly result in poor performance and persistent error codes. Our VIN programming service ensures this 2006-2009 Buick Allure transmission control module works perfectly the first time, saving you from future headaches and diagnostic costs.
By replacing your failing part with this high-quality, pre-programmed 2006-2009 Buick Allure transmission control module, you are not just fixing a problem—you are investing in the continued comfort and reliability of your vehicle. It’s the smart, effective way to get your car back to performing its best.
Frequently Asked Questions
What does VIN programming mean for me?
It means the module arrives ready to install with no extra steps. We load your car’s specific software onto the module before shipping, so it communicates perfectly with your engine and other systems. This completely avoids a costly programming service at a dealership.
Is this difficult to install on my Buick Allure?
For most individuals with basic mechanical skills, this is a straightforward job. On the 2006-2009 Allure, the TCM is located in the lower air cleaner housing. You’ll need to disconnect the battery, remove the air cleaner assembly to access it, unplug the old module, and plug in the new one. The entire process typically takes under an hour.
Will this fix my specific error code, like P0700?
A P0700 code is a general fault code indicating the TCM has detected a problem. This module is often the root cause. While this part is the direct solution for a failed TCM, it’s always wise to ensure the transmission wiring and solenoids are in good condition. In the vast majority of cases, replacing a faulty TCM will clear these codes after installation.
Do I need to send my old TCM back (core charge)?
No, there is no core charge required for this part. You can keep your old module without any hassle or additional fees.
How can I be sure the TCM is the actual problem?
The symptoms listed above—erratic shifting, being stuck in gear, and specific transmission-related trouble codes—are the most reliable indicators of a failing TCM. If your vehicle exhibits several of these issues simultaneously, the TCM is the most probable cause of the failure.