Is Your Buick LaCrosse Shifting Erratically?
There’s nothing more frustrating than when the smooth, reliable performance you expect from your Buick LaCrosse is interrupted by transmission problems. Harsh shifts, delayed gear engagement, or a sudden check engine light can turn your daily drive into a source of stress. These are classic signs of a failing Transmission Control Module (TCM), the electronic brain of your automatic transmission. Ignoring these symptoms can lead to more significant damage and costly repairs. Fortunately, there’s a straightforward, dependable solution.
Common Symptoms & Your Solution
This VIN-programmed T42 Transmission Control Module is the definitive fix for the issues plaguing your vehicle. If you’re experiencing any of the following, this part is designed for you:
- Abrupt, harsh, or jerky shifting between gears
- The vehicle getting stuck in one gear (often called “limp mode”)
- Transmission-related warning lights illuminated on your dash
- Diagnostic Trouble Codes (DTCs) such as P0700, P0750, or other solenoid-related faults
- A noticeable decrease in fuel economy
- Failure to shift up or down correctly
By replacing your old unit with our precisely programmed module, you directly address the root cause of these electronic failures, restoring the crisp, seamless shifting your LaCrosse was built for.
Features & Benefits
- ✔ Plug & Play Installation: This module is pre-programmed to your car’s specific Vehicle Identification Number (VIN). This critical step ensures it communicates flawlessly with your vehicle’s other computers right out of the box, eliminating the need for an expensive trip to the dealership for programming.
- ✔ Restored Performance: By installing a properly functioning TCM, you restore precise electronic control over your transmission’s clutches and solenoids. The result is smoother gear changes, improved fuel efficiency, and a more enjoyable driving experience.
- ✔ Cost-Effective Repair: Avoid the high costs and scheduling hassles of a dealership service department. This is a solution that a competent home mechanic or your trusted local shop can install easily, saving you time and money.
- ✔ Guaranteed Compatibility: This is a direct-fit replacement for the 2006-2009 Buick LaCrosse 24256960 TCM and is interchangeable with a wide range of GM service numbers, ensuring a perfect match for your vehicle.
- ✔ Peace of Mind: This unit is backed by our one-year replacement warranty. Drive with confidence knowing your purchase is protected.
Expert Insight: The Power of VIN Programming
In modern vehicles like your Buick, the TCM doesn’t just manage shifts; it’s part of a complex network that includes the Engine Control Module (ECM) and Body Control Module (BCM). For this network to function correctly, each component must speak the same digital language, which is dictated by the VIN. A generic, non-programmed module is like a stranger trying to join a private conversation—it leads to confusion, error codes, and poor performance. Our VIN programming service ensures your new TCM is a perfect digital match, integrating seamlessly to restore full factory functionality and prevent future electronic conflicts.
Don’t let a faulty module compromise the comfort and reliability of your sedan. Installing this pre-programmed 2006-2009 Buick LaCrosse 24256960 TCM is the most effective way to solve your transmission woes and get back to driving with confidence. With no core charge and a straightforward installation process, you can have your car running smoothly again in no time.
Frequently Asked Questions
What exactly does a Transmission Control Module do?
The TCM is a computer that processes data from various sensors on your vehicle to control when and how your automatic transmission shifts gears. It manages fluid pressure, torque converter lockup, and shift timing to ensure optimal performance, fuel economy, and smoothness.
Is this part difficult to install?
For the 2006-2009 LaCrosse, the TCM is typically located under the lower air cleaner housing, making it accessible in the engine bay. Installation usually takes less than an hour for someone with basic mechanical skills. The key is that our pre-programming removes the most difficult step—the need for specialized dealer software.
Do I need to do anything after installation?
After installing the new module, it’s a good practice to use a standard OBD2 scan tool to clear any lingering fault codes from the vehicle’s memory. This ensures the system starts fresh with the new, fully functional TCM. Other than that, no further programming or setup is required.
How do I provide my VIN for programming?
You will be prompted to enter your vehicle’s 17-digit VIN during the checkout process. Please double-check it for accuracy, as we use this exact number to program the module specifically for your car.
Will this fix a P0700 trouble code?
A P0700 code is a general transmission fault code, meaning the TCM has detected a problem and has requested the check engine light be turned on. While a faulty TCM can cause a P0700, it’s often accompanied by more specific codes. This module is designed to resolve the internal electronic faults that trigger these codes, making it a very common solution for a P0700.
Is this the correct part for my car?
This module is the specified replacement for the 2006-2009 Buick LaCrosse. It also fits a wide range of other GM vehicles. You can verify the fit by matching the part number 24256960 or one of the interchangeable numbers listed in the product details to your original part.