Restore Peak Transmission Performance in Your Buick Terraza
Is your 2006-2007 Buick Terraza suffering from erratic shifting, delayed gear engagement, or a persistent check engine light? These are classic signs of a failing Transmission Control Module (TCM). As the central computer for your automatic transmission, a faulty TCM can cause significant drivability issues, poor fuel economy, and even leave you stranded. This genuine GM T42 TCM, service part number 24243901, is the definitive solution to restore your vehicle’s smooth, reliable operation.
This isn’t just a replacement part; it’s a complete, plug-and-play solution. We pre-program each module to your vehicle’s specific Vehicle Identification Number (VIN) before shipping. This crucial step ensures seamless integration with your Terraza’s systems, eliminating the need for expensive and time-consuming programming at a dealership. Simply install the module, and you’re ready to get back on the road with confidence.
From the Diagnostic Bay
We had a 2007 Terraza come into the shop that was stuck in 3rd gear (limp mode) with a P0700 code. The owner had already replaced two shift solenoids with no success. After a quick scan, we confirmed communication with the TCM was intermittent. We checked the wiring and found it to be intact. Installing one of our VIN-programmed T42 modules resolved the issue in under 30 minutes. The customer was thrilled to have their van shifting like new again without a costly trip to the dealer.
Symptoms of a Failing 2006-2007 Terraza TCM
- ✔ Harsh, erratic, or delayed gear shifts that disrupt your drive.
- ✔ The vehicle gets stuck in a single gear, often referred to as “limp mode.”
- ✔ Check Engine Light or Transmission Warning Light is illuminated on the dashboard.
- ✔ Diagnostic Trouble Codes (DTCs) such as P0700, P0750, or other solenoid-related faults are stored.
- ✔ A noticeable decrease in fuel efficiency.
- ✔ The transmission may feel like it’s slipping between gears.
- ✔ Complete loss of shifting capability or intermittent communication with the module.
The Power of VIN Programming
The key benefit of this module is our professional VIN programming service. Modern vehicles rely on complex communication between modules. By programming this 2006-2007 Terraza TCM with your van’s unique VIN, we ensure it has the latest GM software updates and is perfectly calibrated for your specific transmission (like the 4T65E) and engine combination. This process guarantees optimal shift points, torque converter lockup strategy, and overall transmission health, directly addressing common software-related DTCs and performance issues.
Quality and Compatibility You Can Trust
Built to strict OEM specifications, this T42 TCM ensures long-lasting durability and reliable performance. It serves as a direct replacement for a wide range of service numbers, making it a versatile solution for many GM vehicles. This part is interchangeable with numbers including 24252114, 24234503, 24230461, 24243901, and more. Backed by our one-year warranty, you can install this module with the peace of mind that you’re making a sound investment in your vehicle’s longevity.
Straightforward Installation
For the 2006-2007 Buick Terraza, the TCM is conveniently located on the LH strut tower in the engine compartment, making it easily accessible. The replacement process is simple and typically takes less than 30 minutes.
Installation Steps:
- Disconnect the negative battery terminal.
- Locate the TCM on the driver’s side strut tower.
- Carefully unplug the electrical connectors.
- Unbolt and remove the old module.
- Install the new, pre-programmed module and secure the bolts.
- Reconnect the electrical harnesses.
- Reconnect the battery.
After installation, it’s a good practice to use a scan tool to clear any stored DTCs. Best of all, there is no core charge, so you can keep your old part without any hassle.
Frequently Asked Questions
Do I need to get this TCM programmed by a dealer?
No. This module comes pre-programmed to your vehicle’s VIN. It is a true plug-and-play solution, saving you the time and expense of a dealership visit.
Where is the TCM located on a 2006-2007 Buick Terraza?
The Transmission Control Module on the 06-07 Terraza is located in the engine compartment, mounted to the driver’s side (LH) strut tower.
Will this fix a P0700 trouble code?
A P0700 code is a general fault code indicating the TCM has detected a problem. While a failing TCM is a very common cause, this code can also be triggered by other transmission issues. Replacing a faulty TCM often resolves the P0700 and any related specific codes.
Is this a new or used part?
This is a high-quality, OEM-standard replacement part that has been expertly tested and programmed to ensure it meets or exceeds original performance specifications. It is backed by a one-year warranty.
What if I have a different GM vehicle?
This T42 TCM is compatible with a wide array of GM vehicles from 2006-2014, including models like the Chevrolet Impala, GMC Sierra, Saturn Vue, and Pontiac G6. Please verify the part number or use our vehicle fitment tool to ensure compatibility.