Restore the Smooth, Effortless Ride to Your Buick Lucerne
Is your Buick Lucerne, a car known for its comfort and smooth performance, suddenly giving you trouble? If you’re experiencing harsh, erratic shifting, warning lights on the dash, or the vehicle feels stuck in one gear, a failing Transmission Control Module (TCM) is the most likely culprit. Don’t let a faulty electronic component ruin your driving experience or lead to a costly dealership visit. This pre-programmed T42 TCM is the definitive, reliable solution to get your car back to operating as it should, restoring both its performance and your peace of mind.
Common Symptoms & Your Solution
A failing TCM can cause a host of frustrating and potentially damaging issues. If you recognize any of these symptoms, it’s time for a replacement. This module is engineered to solve them directly:
- Harsh, banging shifts or delayed gear engagement
- Vehicle stuck in “limp mode” (usually 2nd or 3rd gear)
- Check Engine Light or Transmission warning light is illuminated
- Diagnostic Trouble Codes (DTCs) such as P0700, P0750, or other solenoid-related faults
- Failure to upshift or downshift correctly
- A noticeable decrease in fuel economy
Features & Benefits
- âś” Ready to Install, No Dealer Needed: This module arrives pre-programmed to your vehicle’s specific VIN. This crucial step ensures perfect communication between the engine and transmission, providing optimal shift patterns and performance right out of the box. You completely avoid the extra time and expense of dealership programming.
- âś” Restore Peak Performance: By precisely managing shift points, torque converter lockup, and line pressure, this TCM restores the smooth, responsive feel your Buick was built for. It directly addresses the root cause of poor shifting and transmission-related error codes.
- âś” Built for Reliability: Manufactured to strict OEM standards, this module is designed to provide lasting and dependable operation. It’s the smart choice for a long-term repair, not a temporary fix.
- âś” Hassle-Free Purchase: There is no core charge on this part. You can keep your old module without the stress of packaging it up and sending it back, simplifying the entire repair process.
- âś” Guaranteed Protection: This unit is backed by our one-year replacement warranty. Drive with confidence knowing your purchase is protected against defects.
Expert Insight: The T42 TCM Explained
The T42 TCM was a workhorse for General Motors, used across dozens of sedans, trucks, and SUVs from the mid-2000s. However, the hardware is only half the story. The software—the programming—is what tells the transmission how to behave in your specific 2006-2011 Buick Lucerne. A module from a junkyard Silverado or Impala might look identical, but it won’t have the correct shift strategy for your vehicle’s engine, weight, and gear ratios, leading to continued problems. By purchasing a professionally programmed 2006-2011 Buick Lucerne transmission control module, you ensure the software is a perfect match, guaranteeing a successful and lasting repair.
Frequently Asked Questions
Do I need to have this module programmed by a dealer?
No. This is the primary benefit of our service. We pre-program the module using your vehicle’s VIN before it ships. This makes the installation a simple plug-and-play process, saving you hundreds of dollars and a trip to the dealership.
Is this part difficult to install?
For the Buick Lucerne, the TCM is typically located in the LH (driver’s side) engine compartment, making it relatively accessible. Most individuals with basic mechanical skills can complete the replacement in under 30 minutes. We recommend disconnecting the battery before starting the installation.
How do I know for sure that my TCM is the problem?
The most common indicators are transmission-specific error codes (like P0700), the vehicle being stuck in limp mode, and erratic or harsh shifting that isn’t related to low fluid levels. If you’re experiencing these issues, a faulty TCM is the most probable cause.
Will this fit other GM vehicles?
Yes, the T42 hardware fits a wide range of GM vehicles like the Chevrolet Impala, GMC Sierra, and Cadillac DTS. However, the programming is vehicle-specific. This listing is for a 2006-2011 Buick Lucerne transmission control module, and it will be programmed specifically for that application using the VIN you provide at checkout.
What is the warranty on this part?
This part is covered by a one-year replacement warranty, giving you confidence and protection for your repair.