Tired of Harsh Shifts and Warning Lights in Your Buick LaCrosse?
Is your 2006-2009 Buick LaCrosse suffering from jarring shifts, delayed gear engagement, or a frustrating check engine light? These are classic signs of a failing Transmission Control Module (TCM), the electronic brain of your automatic transmission. Ignoring these symptoms can lead to poor fuel economy, excessive wear, and even complete transmission failure. This pre-programmed T42 TCM is the definitive, hassle-free solution to restore your vehicle’s smooth, reliable performance.
Common Symptoms & Your Solution
A faulty TCM can turn your comfortable ride into a stressful experience. If you’re noticing any of the following issues, this module is designed to be the direct-fit fix you need:
- Abrupt, harsh, or erratic gear changes
- The vehicle getting stuck in “limp mode” (usually 2nd or 3rd gear)
- Transmission-related warning lights on your dash
- Diagnostic Trouble Codes (DTCs) such as P0700, P0750, or other solenoid-related faults
- A noticeable decrease in fuel efficiency
- Failure to upshift or downshift properly
By replacing your old unit with this expertly prepared 2006-2009 Buick LaCrosse transmission control module, you directly address the root cause of these electronic failures, getting your car back to factory-spec operation without guesswork.
Features & Tangible Benefits
- ✔ Plug-and-Play Installation: This module arrives pre-programmed to your vehicle’s specific VIN. This means no expensive trips to the dealership for programming—simply install it, and you’re ready to go.
- ✔ Restored Driving Comfort: Eliminates harsh shifting and unpredictable gear hunting, bringing back the smooth, quiet ride you expect from your Buick.
- ✔ Long-Term Reliability: Built to strict OEM standards to ensure durability and dependable performance, giving you confidence on every drive.
- ✔ Guaranteed Fitment: Engineered as a direct replacement for service numbers like 24242391, 24234503, and 24252114, ensuring perfect compatibility.
- ✔ Peace of Mind Included: This unit is backed by our one-year replacement warranty.
Expert Insight: The Dealership Alternative
Many drivers assume a transmission issue requires a costly visit to the dealership, involving diagnostics, a new part, and mandatory programming fees that can add hundreds to the bill. The real power of a VIN-programmed module is that it consolidates all those steps into one. We handle the complex programming using the latest GM software before it even ships. This empowers you or your trusted mechanic to perform a straightforward component swap. For the owner of a premium sedan like the LaCrosse, this 2006-2009 Buick LaCrosse transmission control module isn’t just a part; it’s a smarter, more efficient path to a reliable repair.
Don’t let a faulty TCM compromise your vehicle’s performance and your driving confidence. This is the ideal solution for anyone looking to properly repair their vehicle and avoid future transmission headaches. With our reliable 2006-2009 Buick LaCrosse transmission control module, you’re not just fixing a problem—you’re investing in a smooth and dependable driving experience for years to come.
Frequently Asked Questions
What does a Transmission Control Module do?
The TCM is a computer that controls your automatic transmission. It reads data from various sensors on the engine and transmission to calculate the perfect moment to shift gears, control fluid pressure, and manage the torque converter. A failing TCM is the cause of most electronic shifting problems.
Is this part difficult to install?
For the Buick LaCrosse, the TCM is typically located under the lower air cleaner housing, making it accessible. Most experienced DIYers or any professional mechanic can complete the installation in under an hour. Remember to disconnect the battery before starting the job.
What does “VIN Programmed” actually mean?
It means we load your car’s unique 17-digit Vehicle Identification Number (VIN) and the latest GM software onto the module before we ship it. This ensures it communicates perfectly with your car’s other computers right out of the box, just like an original part from the factory.
Will this fix my check engine light?
If the check engine light is on due to transmission-related fault codes (like P0700 or solenoid codes), this module is designed to resolve those issues. After installation, it’s recommended to clear any stored codes with a standard OBD-II scan tool.
Do I need to return my old part?
No, there is no core charge for this part. You can keep or dispose of your old module without any hassle or additional fees.
How do I know this is the right part for my LaCrosse?
This module is guaranteed to fit 2006-2009 Buick LaCrosse models. You can also verify by matching the part number (24235753) or one of the interchangeable service numbers listed in the product details to your existing unit.