Restore Your Buick’s Smooth, Confident Ride
Is your Buick Lucerne suffering from harsh, erratic shifting, getting stuck in gear, or displaying a check engine light? These frustrating issues often point directly to a failing Transmission Control Module (TCM). This pre-programmed T42 TCM is the definitive, hassle-free solution to restore the smooth, reliable performance you expect from your vehicle. Engineered to OEM specifications, it arrives ready for a plug-and-play installation, eliminating the need for an expensive and time-consuming trip to the dealership.
Common Symptoms & Your Solution
A failing TCM can disrupt your entire driving experience. If you’re noticing any of the following, this module is the solution you need:
- Abrupt, harsh, or delayed gear shifts
- The vehicle is stuck in “limp mode” (often in 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 faults
- A sudden drop in fuel economy
- Complete failure to shift gears
By replacing your old unit with this expertly programmed 2006-2011 Buick Lucerne transmission control module, you directly address the electronic source of these problems, restoring precise communication between your engine and transmission.
Features & Benefits
- โ Plug & Play Installation: This module is professionally programmed to your vehicle’s specific VIN number before shipping. This ensures perfect compatibility and allows you to install it right out of the box without any additional programming.
- โ Solve Annoying Shifting Issues: Engineered to restore crisp, smooth gear changes and eliminate hesitation or slipping, bringing back your car’s factory-new feel.
- โ Clear Stubborn Error Codes: Directly resolves common transmission-related DTCs, turning off the check engine light and clearing communication faults.
- โ Avoid Dealership Costs: Save hundreds of dollars by avoiding the high programming fees and labor rates charged by dealerships for the same service.
- โ Built for Reliability: Constructed to meet or exceed strict OEM quality standards, ensuring long-lasting durability and dependable performance for years to come.
- โ Warranty Protection: This unit is backed by our one-year replacement warranty.
Expert Insight: The Power of Pre-Programming
Many people don’t realize that a modern transmission module is more than just a partโit’s the brain of the transmission. Simply swapping a used or new module won’t work, as it needs to be coded specifically to your car’s VIN. This process, known as programming, typically requires specialized dealer equipment. Our service completely removes that barrier. We handle the complex programming for you, so when you receive your 2006-2011 Buick Lucerne transmission control module, it’s a simple mechanical swap that most competent DIYers can perform in their own driveway in under an hour.
Frequently Asked Questions
What is VIN programming and why is it important?
VIN programming is the process of loading your vehicle’s unique software and settings onto the transmission control module. It’s crucial because it ensures the TCM communicates correctly with your car’s engine, brakes, and other systems for optimal shifting, fuel economy, and performance. Without it, the module will not function.
Is this part difficult to install?
For most 2006-2011 Buick Lucerne models, the TCM is located in the engine compartment on the driver’s side and is relatively easy to access. Installation typically involves disconnecting the battery, unplugging the electrical connectors, unbolting the old module, and installing the new one. Most people with basic tools can complete the job in under 30 minutes.
Will this fix my P0700 trouble code?
A P0700 code is a general fault code indicating the TCM has detected a problem. While this module often resolves the root cause, it’s always best to have the specific secondary codes (e.g., P0752, P0757) read to confirm the diagnosis. In a vast majority of cases where the module itself is faulty, this part is the correct fix.
Do I need to return my old part?
No, there is no core charge for this part. You can keep your old module, which saves you the time and hassle of packaging and shipping it back.
Is this compatible with other GM vehicles?
Yes, while this listing is for the 2006-2011 Buick Lucerne transmission control module, the T42 TCM was used in a wide variety of GM cars, trucks, and SUVs. Please verify the part number or use our vehicle fitment tool to ensure compatibility with your specific model.