Is Your Buick Lucerne Shifting Erratically or Stuck in Limp Mode?
A faulty Transmission Control Module (TCM) can turn your comfortable, reliable ride into a source of constant stress. If you’re experiencing harsh gear changes, delayed engagement, poor fuel economy, or a check engine light that just won’t go away, your TCM is likely the culprit. Don’t let a failing module compromise your vehicle’s performance and safety. This is the straightforward, dependable solution to get your car driving like new again.
Common Symptoms & Your Solution
This Programmed T42 Transmission Control Module is the definitive fix for the most common transmission issues plaguing GM vehicles. It is engineered to resolve problems such as:
- Harsh, jerky, or unpredictable shifting
- The vehicle being stuck in one gear (limp mode)
- Delayed engagement when shifting from Park to Drive or Reverse
- Active Check Engine or Transmission warning lights
- Diagnostic Trouble Codes (DTCs) like P0700, P0750, or other solenoid-related faults
- A noticeable decrease in fuel efficiency
Features & Benefits
- ✔ 100% Plug-and-Play Installation: This module arrives pre-programmed to your vehicle’s specific VIN. This critical step ensures perfect communication between the TCM and your car’s other computers, eliminating the need for expensive dealership programming. Just install it and go.
- ✔ Restored Drivability: By precisely managing shift points, torque converter lockup, and line pressure, this module restores the smooth, responsive shifting you expect from your vehicle.
- ✔ Built to OEM Standards: Manufactured to meet or exceed original equipment specifications, ensuring reliable performance and long-term durability under all driving conditions.
- ✔ Hassle-Free Purchase: No core charge is required, so you can keep your old part without the inconvenience of returning it.
- ✔ Guaranteed Protection: This unit is backed by our one-year replacement warranty.
Expert Insight: Why VIN Programming is Non-Negotiable
Many sellers offer generic, non-programmed modules, but this is a critical mistake. A TCM is the ‘brain’ of your transmission, and it must be perfectly synced with your vehicle’s unique identity—the VIN. Our pre-programming service flashes the module with the latest GM software specific to your car. This isn’t just a convenience; it’s essential for ensuring correct shift strategies, preventing compatibility errors, and guaranteeing the long-term health of your entire transmission.
By installing our Programmed T42 Transmission Control Module, you are not just replacing a part; you are restoring the integrity and performance of your vehicle’s powertrain. It’s the smart, reliable choice for owners of the Buick Lucerne, Chevy Impala, GMC Sierra, and many other compatible GM models who demand a solution that works correctly the first time.
Frequently Asked Questions
What does a Transmission Control Module do?
The TCM acts as the central computer for your automatic transmission. It receives data from various sensors on the engine and vehicle, and uses this information to control exactly when and how the transmission shifts gears, ensuring optimal performance, fuel economy, and smoothness.
Is this module truly plug-and-play?
Yes. Because we program the module to your vehicle’s specific VIN before shipping, it is ready for immediate installation without any need for a trip to the dealership or a specialized scan tool for programming. Simply disconnect the battery, swap the module, reconnect the battery, and you’re ready to drive.
Will this fix a P0700 trouble code?
A P0700 code is a general fault code indicating that the TCM has detected a problem and has requested the check engine light to be turned on. While this module often resolves the underlying cause of a P0700 code (such as internal TCM failure), it’s always best to have the specific transmission codes read to confirm the diagnosis.
Where is the TCM located on my 2006-2011 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) of the vehicle. Always confirm the location before beginning installation.
Do I need to return my old part?
No. We do not require a core return for this Programmed T42 Transmission Control Module. This saves you the time, cost, and hassle of shipping your old part back.