Is Your Buick Lucerne’s Smooth Ride a Thing of the Past?
The Buick Lucerne is known for its comfortable, almost seamless driving experience. When that suddenly changes to harsh, unpredictable shifting or the car gets stuck in gear, it’s incredibly frustrating. More often than not, the culprit isn’t a catastrophic transmission failure, but a faulty Transmission Control Module (TCM)โthe electronic brain that manages every shift. Over time, heat cycles and vibrations can cause internal components in the original TCM to fail, leading to a host of drivability problems.
Common Symptoms of a Failing Lucerne TCM
In my 20+ years as a technician, I’ve seen these T42 modules cause identical issues across the GM lineup. If your Lucerne is experiencing any of the following, a bad TCM is the likely cause:
- โ Abrupt, banging shifts, especially between 1st and 2nd gear.
- โ The vehicle feels stuck in “limp mode” (usually 2nd or 3rd gear) with no upshifting.
- โ Check Engine Light or Transmission Warning Light is on with codes like P0700, P0750, or other solenoid-related faults.
- โ Hesitation or a long delay when shifting from Park into Drive or Reverse.
- โ A noticeable drop in fuel economy due to inefficient gear changes.
Real-World Diagnosis: A Technician’s Experience
“A customer’s 2008 Lucerne came in last week with these exact symptoms. It had a violent shift from 1st to 2nd and a persistent P0700 code that wouldn’t clear. The owner was worried he needed a full transmission rebuild. We confirmed the fluid was clean and the solenoids tested fine, pointing directly to the TCM. After installing one of our pre-programmed modules, the car shifted like it just left the showroom. It’s a common, straightforward fix that saves customers thousands over a transmission replacement.”
Plug-and-Play Installation: No Dealer Visit Required
This isn’t a repair that needs to tie your car up at a dealership for days. Our 2006-2011 Lucerne Transmission Module arrives programmed specifically to your car’s Vehicle Identification Number (VIN). This ensures it communicates perfectly with your vehicle’s engine computer and other systems right out of the box. For the Buick Lucerne, the installation is particularly accessible.
- Safety First: Disconnect the negative terminal from your car’s battery to prevent any electrical shorts and reset the vehicle’s systems.
- Locate the TCM: On your 2006-2011 Lucerne, the TCM is conveniently located in the left-hand (driver’s side) engine compartment. It’s an aluminum box with large electrical connectors.
- Swap the Module: Carefully unplug the wiring harnesses and unbolt the old module. Bolt the new module in its place and securely reconnect the harnesses. You’ll hear a ‘click’ when they’re seated properly.
- Reconnect and Verify: Reconnect the battery terminal. Start the car and allow it to idle for a few minutes. Take it for a test drive to confirm the shifting is smooth and all warning lights are off.
Why Choose This OEM-Quality Replacement?
This isn’t just a replacement part; it’s a permanent solution to common GM transmission woes. By choosing our 2006-2011 Lucerne Transmission Module, you get a component that restores factory performance and reliability. It’s built to meet or exceed original equipment specifications and is backed by a one-year warranty for your peace of mind. Forget about core charges or the hassle of returning your old partโthis is a simple, direct purchase.
Guaranteed Compatibility
This module, part number 24235753, is a direct replacement for a wide range of original service numbers, including 24252114, 24234503, 24242391, 24235754, and more, ensuring a perfect fit for your vehicle.