Restore Smooth, Reliable Shifting to Your Family’s Minivan
Is your 2006-2007 Buick Terraza suffering from harsh shifting, getting stuck in gear, or displaying a check engine light? These are classic signs of a failing Transmission Control Module (TCM), a critical component that acts as the brain for your automatic transmission. A faulty TCM can make your family’s minivan feel unreliable and unsafe. This replacement T42 TCM, service number 24255280, is the definitive solution, arriving pre-programmed to your vehicle’s specific VIN for a straightforward, plug-and-play installation that restores factory performance and peace of mind.
Common Symptoms & Your Solution
If you’re experiencing any of the following issues, a failing TCM is the likely culprit. Installing our pre-programmed 2006-2007 Buick Terraza transmission control module is the most effective way to resolve these problems permanently:
- Harsh or Erratic Shifting: Abrupt, jerky gear changes or unpredictable shifting patterns.
- Limp Mode Activation: The vehicle gets stuck in a single gear (usually 2nd or 3rd) to prevent further damage.
- Delayed Engagement: A noticeable pause when shifting from Park into Drive or Reverse.
- Warning Lights: A persistent Check Engine Light or Transmission Warning Light on your dashboard.
- Diagnostic Trouble Codes (DTCs): Common codes like P0700, P0750, or other solenoid-related faults point directly to a TCM issue.
- Poor Fuel Economy: Inefficient shifting leads to the engine working harder and consuming more fuel.
Features & Benefits
- ✔ 100% Plug-and-Play: This module is expertly programmed to your Terraza’s VIN before shipping. This crucial step ensures perfect communication between the module and your vehicle, eliminating the need for an expensive trip to the dealership for programming.
- ✔ Restores Factory Performance: By managing shift points, torque converter lockup, and line pressure with precision, this module brings back the smooth, quiet operation you expect from your Buick.
- ✔ Built to OEM Standards: Engineered for durability and reliability, this unit meets or exceeds original equipment specifications, ensuring long-lasting performance for your family’s daily driver.
- ✔ Solves Common DTCs: Directly addresses and resolves frustrating diagnostic codes related to transmission performance, helping you pass emissions tests and turn off that check engine light for good.
- ✔ No Core Charge Required: Keep your old part without any extra fees or the hassle of returning a core, simplifying your repair process.
- ✔ This unit is backed by our one-year replacement warranty.
An Expert’s Note on Transmission Repairs
As a technician with over two decades of experience, I’ve seen countless drivers spend hundreds on replacing solenoids or fluid, only to find the real issue was the TCM all along. The module’s internal electronics can fail intermittently, causing symptoms that mimic mechanical problems. By starting with a properly programmed 2006-2007 Buick Terraza transmission control module, you’re not just replacing a part; you’re applying a definitive diagnostic solution that saves you time, money, and the headache of chasing phantom issues.
Frequently Asked Questions
Why is VIN programming so important for this part?
VIN programming loads your vehicle’s specific software and settings onto the module. Without it, the TCM cannot communicate correctly with your engine and other vehicle systems, leading to continued shifting problems or the vehicle not starting at all. Our pre-programming makes installation as simple as swapping the part.
Is this a difficult part to install on my Terraza?
For the Buick Terraza, the TCM is typically located on the LH strut tower, making it accessible in the engine bay. With basic hand tools, most DIYers can complete the installation in under 30 minutes. Simply disconnect the battery, unplug the old module’s connectors, unbolt it, and install the new one in its place.
Will this fix my check engine light?
Yes, if the check engine light is caused by transmission-related diagnostic trouble codes (like P0700), this module is designed to resolve the root cause. After installation, you may need to use a simple OBD2 scanner to clear any stored codes from the vehicle’s memory.
Do I need to send my old part back?
No, there is absolutely no core charge or requirement to return your original module. This makes the repair process faster and more convenient for you.
How do I know for sure that the TCM is the problem?
While the symptoms listed are strong indicators, the best way to be certain is by having a professional scan the vehicle for specific transmission-related DTCs. Codes pointing to solenoid circuit failures, loss of communication, or internal processor errors are definitive signs that the 2006-2007 Buick Terraza transmission control module needs replacement.