Restore the Smooth, Quiet Ride of Your Buick LaCrosse
Is your Buick LaCrosse no longer delivering the smooth, predictable shifting it was known for? If you’re experiencing harsh gear changes, hesitation, or have a persistent check engine light, a failing transmission control module (TCM) is likely the culprit. This VIN-programmed T42 TCM is the definitive solution, designed to restore your vehicle’s factory performance and your peace of mind. By precisely managing shift points and torque converter lockup, this module eliminates the frustrating symptoms of a faulty original unit, allowing you to once again enjoy the comfortable driving experience you expect from your Buick.
Common Symptoms & Your Solution
A failing TCM can disrupt your entire driving experience. This module is the direct fix for issues such as:
- Harsh, erratic, or delayed shifting
- The vehicle being stuck in “limp mode” (usually 2nd or 3rd gear)
- Active Check Engine or Transmission warning lights
- Diagnostic Trouble Codes (DTCs) like P0700, P0750, or other solenoid-related faults
- A complete failure to shift up or down
- Poor fuel economy and transmission overheating
Installing our pre-programmed 2006-2009 Buick LaCrosse transmission control module is the most effective way to resolve these problems without the high cost and inconvenience of a dealership visit.
Features & Benefits
- ✔ Plug-and-Play Installation: This module arrives pre-programmed to your vehicle’s specific VIN. No expensive dealership flashing or additional programming is required—simply install it and restore proper function immediately.
- ✔ Restored Drivability: By taking precise control of all transmission functions, this module ensures silky-smooth gear changes, improved fuel efficiency, and a more responsive feel.
- ✔ Eliminate Warning Lights: Our programming process addresses the root electronic cause of many common transmission DTCs, helping you clear that frustrating check engine light for good.
- ✔ Dependable Quality: Built to meet or exceed strict OEM standards for performance and durability, ensuring a long-lasting and reliable repair for your vehicle.
- ✔ Warranty Protection: This unit is backed by our one-year replacement warranty.
Expert Insight: Why VIN Programming Matters
In modern vehicles like your Buick LaCrosse, the TCM doesn’t just change gears—it constantly communicates with the Engine Control Module (ECM), ABS, and other systems. A generic, non-programmed module can’t speak this unique language, leading to persistent errors and poor performance. Our VIN-specific programming ensures this 2006-2009 Buick LaCrosse transmission control module is a perfect digital match for your car, guaranteeing seamless integration and restoring the sophisticated, smooth operation your vehicle was designed to provide.
Don’t let a faulty TCM compromise the comfort and reliability of your car. This professionally programmed 2006-2009 Buick LaCrosse transmission control module is your direct path to a lasting solution. Order today and get back to driving with confidence.
Frequently Asked Questions
What does a VIN-programmed TCM actually do?
VIN programming loads your vehicle’s specific software and calibration files onto the module before it ships. This ensures it communicates perfectly with your car’s engine and other electronic systems, just like the original part from the factory, for optimal performance and no compatibility errors.
Is this a difficult part to install?
For the 2006-2009 LaCrosse, the TCM is typically located under the air cleaner housing, making it accessible for a DIY mechanic with basic tools. The installation process usually takes under 30 minutes. Since it’s pre-programmed, no complex computer work is needed post-installation.
Will this fix my transmission warning light?
Yes, in most cases. This module is designed to correct the internal electronic faults that trigger common transmission-related DTCs (like P0700) and the associated warning lights. After installation, you may need to use a basic scan tool to clear any stored codes from the vehicle’s memory.
Do I need to send my old part back?
No, there is no core charge for this part. You can keep, recycle, 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 be compatible with 2006, 2007, 2008, and 2009 Buick LaCrosse models. During checkout, we will ask for your VIN to ensure we load the exact correct software for your specific vehicle configuration.