Restore Flawless Shifting to Your Buick Lucerne
Is your 2006-2011 Buick Lucerne experiencing frustrating transmission problems like harsh shifting, delayed gear engagement, or getting stuck in ‘limp mode’? These are classic signs of a failing Transmission Control Module (TCM). The TCM is the electronic brain of your automatic transmission, responsible for orchestrating every gear change with precision. When it fails, it can disrupt your vehicle’s performance, fuel economy, and overall drivability. This genuine OEM-quality T42 TCM, service part number 24235753, is the definitive solution to restore your vehicle’s transmission to its original, smooth-operating condition.
The Critical Role of Your Transmission Control Module
The TCM in your Buick Lucerne acts as a dedicated computer, constantly analyzing data from various sensors throughout the vehicle. It monitors engine RPM, vehicle speed, throttle position, and transmission fluid temperature to determine the perfect moment to shift gears. It controls the hydraulic pressure applied to the transmission’s internal clutches and bands via electronic solenoids. A healthy TCM ensures seamless acceleration, optimal fuel efficiency, and protects the transmission from premature wear. When it malfunctions, the communication breaks down, leading to the erratic behavior you’re likely experiencing.
From the Diagnostic Bay
We had a 2009 Buick Lucerne come into the shop with a check engine light on and the transmission banging into gear. The owner was worried about a costly transmission rebuild. We scanned the vehicle and found code P0700 (Transmission Control System Malfunction) and several solenoid circuit codes. Instead of jumping to conclusions, we checked the TCM connector for corrosion—it was clean. The symptoms pointed directly to an internal failure in the module. After installing one of our VIN-programmed T42 TCMs, we cleared the codes and took it for a test drive. The shifting was immediately smooth and responsive, just like new. The customer was relieved to have a simple, effective fix without needing major mechanical work.
Symptoms of a Failing 2006-2011 Lucerne TCM
A failing transmission module can manifest in several ways, often starting as intermittent issues before becoming a constant problem. If you notice any of the following symptoms, it’s a strong indication that your TCM needs replacement. Ignoring these signs can lead to further damage to your transmission’s mechanical components.
- ✔ Erratic and Harsh Shifting: Gears may slam into place, or shifts may feel jerky and unpredictable.
- ✔ Delayed Engagement: A noticeable pause when shifting from Park into Drive or Reverse.
- ✔ Stuck in Gear / Limp Mode: The vehicle may refuse to shift out of a single gear (often 2nd or 3rd) to prevent further damage.
- ✔ Warning Lights: The Check Engine Light or a dedicated transmission warning light will illuminate on your dashboard.
- ✔ Diagnostic Trouble Codes (DTCs): Common codes include P0700, P0750, P0753, P0758, and other solenoid-related faults.
- ✔ Poor Fuel Economy: Inefficient shifting forces the engine to work harder, leading to a noticeable drop in MPG.
- ✔ No Communication: In some cases, a scan tool may be unable to communicate with the TCM, indicating a complete failure.
The Ultimate Convenience: Pre-Programmed to Your VIN
The single biggest advantage of this module is our expert VIN programming service. Modern vehicles require the TCM to be programmed specifically to the car it’s being installed in. Traditionally, this meant buying the part and then paying for a tow to the dealership for expensive programming. We eliminate that step entirely. Simply provide your vehicle’s VIN during checkout, and we will program the module with the latest GM software updates for your specific vehicle. This ensures 100% plug-and-play installation. The module arrives ready to install, saving you time, money, and hassle.
Broad Compatibility Across the GM Family
While this is the perfect solution for your 2006-2011 Buick Lucerne, the T42 TCM was used across a vast range of General Motors vehicles equipped with 4-speed automatic transmissions like the 4L60E, 4L65E, and 4L70E. This module is a direct replacement for numerous part numbers, including 24252114, 24234503, 24230461, and many more. It is also the correct part for models such as the Chevrolet Silverado, Tahoe, Impala; GMC Sierra, Yukon; Cadillac DTS; and Pontiac G6, among others listed in the fitment guide.
Frequently Asked Questions
What does VIN programming mean for this TCM?
VIN programming means we load the module with the specific software and calibrations for your exact vehicle using your 17-digit Vehicle Identification Number. This makes the module communicate perfectly with your car’s engine computer and other systems right out of the box, eliminating the need for a trip to the dealership for additional programming.
Will this module fit vehicles other than the Buick Lucerne?
Yes, absolutely. This T42 TCM is compatible with a wide array of GM cars, trucks, and SUVs from roughly 2006 to 2014. Please check the detailed fitment list on this page to confirm compatibility with your specific make, model, and year.
Where is the TCM located on my 2008 Buick Lucerne?
On the 2006-2011 Buick Lucerne, the Transmission Control Module is typically located in the engine compartment on the driver’s side (LH), often near or attached to the strut tower or under the air cleaner housing.
Do I need any special tools for installation?
No special tools are required. Basic hand tools like a socket set and ratchet are usually sufficient to remove the mounting bolts and disconnect the electrical connectors. We recommend disconnecting the vehicle’s battery before starting the installation.
Is there a core charge for my old part?
No, there is no core charge for this part. You can keep your old module without the hassle of needing to return it, saving you time and shipping costs.