Are you experiencing frustrating and unpredictable shifting in your Buick Lucerne? Harsh gear changes, getting stuck in limp mode, or a persistent check engine light can ruin your driving experience and cause serious concern. Restore the smooth, reliable performance you expect with our VIN-programmed T42 Transmission Control Module, the definitive, hassle-free solution to your transmission woes.
Common Symptoms & Your Solution
A failing TCM can manifest in several ways, turning a comfortable ride into a stressful one. If you’re noticing any of the following issues, this module is the solution you need:
- Erratic and Harsh Shifting: Abrupt, jerky gear changes or a noticeable delay when the transmission engages.
- Stuck in Gear (Limp Mode): The vehicle refuses to shift, often getting stuck in 2nd or 3rd gear as a protective measure.
- Warning Lights: The Check Engine Light or a specific transmission warning light is illuminated on your dash.
- Diagnostic Trouble Codes (DTCs): Your mechanic finds codes like P0700 (Transmission Control System Malfunction), P0750, or other solenoid-related faults.
- Poor Performance: A sudden drop in fuel economy, a feeling of sluggishness, or a transmission that seems to be overheating.
This expertly prepared 2006-2011 Buick Lucerne transmission control module is designed to resolve these problems directly, restoring communication and precise control over your vehicle’s 4-speed automatic transmission.
Key Features & Tangible Benefits
- ✔ Plug-and-Play Installation: This module arrives pre-programmed to your vehicle’s specific VIN. This crucial step ensures perfect communication between the TCM and other vehicle systems, eliminating the need for an expensive trip to the dealership for programming.
- ✔ Restored Drivability: By precisely managing shift points, torque converter lockup, and line pressure, this TCM brings back the smooth, quiet, and efficient operation your Lucerne was known for.
- ✔ Lasting Reliability: Built to strict OEM standards, this module is engineered to withstand the demanding conditions within the engine bay, ensuring long-term performance and preventing future shifting problems.
- ✔ Cost-Effective Repair: Avoid the high costs and scheduling headaches of a dealership repair. This is a direct-fit component that a competent DIYer or any independent shop can install quickly.
- ✔ Guaranteed Peace of Mind: This unit is backed by our one-year replacement warranty. Drive with confidence knowing your purchase is protected.
An Expert’s Note on VIN Programming: Why is programming so critical for a 2006-2011 Buick Lucerne transmission control module? In modern GM vehicles, the TCM doesn’t just receive signals—it’s in constant communication with the Engine Control Module (ECM) and Body Control Module (BCM). Without the correct VIN-specific software, these modules can’t ‘talk’ to each other properly, leading to persistent error codes, poor performance, or even a no-start condition. Our programming service ensures this digital handshake is perfect from the moment you plug it in, saving you from a world of diagnostic frustration.
By replacing your faulty unit with this programmed 2006-2011 Buick Lucerne transmission control module, you are not just buying a part; you are investing in a reliable, long-term solution that restores your vehicle’s integrity and your confidence on the road. Installation is straightforward, often taking less than 30 minutes, getting you back to a smooth and enjoyable drive without delay.
Frequently Asked Questions
What does a transmission control module do?
The Transmission Control Module (TCM) is the electronic brain of your automatic transmission. It uses data from various sensors to control shift solenoids, manage fluid pressure, and engage the torque converter, ensuring smooth and efficient gear changes.
Is this module difficult to install?
For most DIYers with basic tools, installation is straightforward. The TCM on a Buick Lucerne is typically located in the engine compartment on the LH side. The process involves disconnecting the battery, unplugging the electrical connectors, unbolting the old module, and installing the new one. Since it’s pre-programmed, no special computer tools are needed.
Will this part fix a P0700 trouble code?
A P0700 code is a general fault code indicating that the TCM has detected a problem and has requested the check engine light to be turned on. While a faulty TCM is a very common cause, P0700 can also be triggered by other issues. However, if you are also experiencing the shifting symptoms described, replacing the TCM is the most likely solution.
Do I need to send my old part back?
No, there is no core charge for this part. You can keep or dispose of your old module without any extra hassle or cost, making the repair process simpler and more convenient.
How do I provide my VIN for programming?
After you place your order, you will be prompted to provide your vehicle’s 17-digit Vehicle Identification Number (VIN). Our technicians use this to load the latest GM-certified software specific to your car, ensuring perfect compatibility.