Restore Smooth, Reliable Shifting to Your Buick
Is your 2006-2009 Buick LaCrosse suffering from harsh, erratic shifting, getting stuck in gear, or showing persistent transmission warning lights? These frustrating and potentially unsafe issues often point directly to a failing Transmission Control Module (TCM). Get back to confident driving with our fully programmed T42 TCM, the direct-fit solution designed to restore your vehicle’s original performance and reliability without an expensive trip to the dealership. This high-quality 24243901 Transmission Control Module for Buick LaCrosse is the definitive fix for your transmission woes.
Common Symptoms & Your Solution
A faulty TCM can cause a host of problems that disrupt your driving experience. If you’re noticing any of the following, this module is your solution:
- Harsh, delayed, or unpredictable gear shifts
- Vehicle stuck in “limp mode” (usually 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 codes
- Failure to upshift or downshift correctly
- Poor fuel economy and potential transmission overheating
Key Features & Tangible Benefits
- ✔ Plug-and-Play Installation: This module arrives pre-programmed to your vehicle’s specific VIN using the latest GM software. This means no expensive dealership programming is required—simply install it and restore proper transmission function immediately.
- ✔ Restored Drivability: By precisely managing shift points, torque converter lockup, and line pressure, this TCM eliminates harsh shifts and hesitation, bringing back the smooth, predictable performance you expect from your Buick.
- ✔ Dependable Operation: Constructed to meet and exceed original equipment specifications for a perfect fit and long-lasting durability. This unit is backed by our one-year replacement warranty.
- ✔ Guaranteed Compatibility: This is a direct replacement for a wide range of GM service numbers, including 24252114, 24234503, and 24243901, ensuring it’s the right part for a successful repair on your vehicle.
Expert Diagnostic Tip: From our 20+ years of experience, we’ve seen countless drivers frustrated by generic, non-programmed modules. They install the part, but the car still won’t shift correctly because it can’t communicate with the other vehicle systems. Our VIN programming process ensures this 24243901 Transmission Control Module for Buick LaCrosse is a perfect electronic match for your car, resolving communication errors and common trouble codes right out of the box. It’s the difference between a quick fix and a lingering problem.
Don’t let a faulty TCM dictate how your car drives. By replacing your old unit with our expertly programmed module, you are making a direct investment in your vehicle’s longevity and your own peace of mind. This is the most effective way to solve complex electronic transmission issues and get your car back to factory-spec performance. Installing this 24243901 Transmission Control Module for Buick LaCrosse is a straightforward repair that restores critical functionality for a safe and enjoyable driving experience.
Frequently Asked Questions
What does a VIN-programmed TCM actually do?
VIN programming loads your vehicle’s specific software onto the module. This ensures it communicates perfectly with your car’s engine computer (ECU), anti-lock brake system, and other electronics. This step is critical for proper transmission function and prevents the compatibility issues common with un-programmed units.
Is this a difficult part to install?
For most models, including the Buick LaCrosse, the TCM is located in the engine compartment (often near the air cleaner box) and is accessible with basic hand tools. The installation typically takes under 30 minutes, making it a very manageable job for a DIYer or any professional mechanic.
Will this fix my P0700 trouble code?
A P0700 code is a general transmission fault code, indicating the TCM has detected a problem. While this module often resolves the root cause of a P0700, it’s essential to have the specific secondary codes read (e.g., P0751, P0756) to confirm the issue is with the TCM or its related solenoids. In many cases, a new, programmed TCM is the correct fix.
Do I need to send my old part back?
No. There is no core charge for this part. You can keep or dispose of your old module, saving you the time and hassle of a return shipment.
How do I provide my vehicle’s VIN?
You will be prompted to enter your vehicle’s 17-digit VIN during the checkout process. Please double-check it for accuracy to ensure we can program the module correctly for your specific car.