Is your Buick Rainier shifting erratically, getting stuck in gear, or flashing a check engine light? A failing Transmission Control Module (TCM) can disrupt your vehicle’s performance and leave you feeling stranded. Restore the smooth, reliable operation of your SUV with this OEM-quality T42 Transmission Control Module, pre-programmed specifically for your vehicle’s VIN. This is not just a part; it’s a complete, plug-and-play solution designed to get you back on the road with confidence.
Common Symptoms & Your Solution
If you’re experiencing any of the following issues, a faulty TCM is the likely culprit. This module is engineered to resolve these exact problems:
- Harsh, delayed, or unpredictable gear shifts
- The vehicle enters “limp mode,” often stuck in 2nd or 3rd gear
- Active Check Engine Light or Transmission Warning Light
- Diagnostic Trouble Codes (DTCs) such as P0700, P0750, or other solenoid-related faults
- Failure to upshift or downshift properly, leading to poor acceleration and fuel economy
- Complete loss of communication with the transmission
Installing this pre-programmed 2006-2007 Buick Rainier transmission control module is the most effective way to permanently fix these issues and restore your vehicle’s factory performance.
Features & Benefits
- ✔ Plug-and-Play Installation: This module arrives pre-programmed to your vehicle’s specific VIN. No expensive trips to the dealership for flashing or setup are required.
- ✔ Restores Smooth Shifting: By managing shift points, line pressure, and torque converter lockup with precision, it eliminates harsh engagement and gear slipping for a comfortable ride.
- ✔ OEM-Standard Quality: Built to meet or exceed original equipment specifications, ensuring dependable performance and long-term durability for your vehicle.
- ✔ Cost-Effective Repair: Save hundreds of dollars compared to dealership prices for both the part and the programming labor.
- ✔ Broad Compatibility: A direct replacement for a wide range of GM service numbers, including 24252114, 24234503, 24242391, and 24235754.
- ✔ Warranty Protection: This unit is backed by our one-year replacement warranty.
Expert Insight: The Critical Role of VIN Programming
Unlike a generic, off-the-shelf module, a VIN-programmed TCM is loaded with the precise software and calibration files for your Buick Rainier’s specific configuration—including its engine, axle ratio, and tire size. This ensures perfect communication between the engine and transmission, optimizing shift strategy and fuel efficiency. Attempting to install a non-programmed unit often results in persistent error codes, poor performance, or even complete transmission failure. Our process guarantees that the 2006-2007 Buick Rainier transmission control module you receive is perfectly matched to your vehicle from the moment you install it.
Frequently Asked Questions
What does ‘VIN Programmed’ actually mean?
It means we flash the module with your vehicle’s unique 17-digit Vehicle Identification Number (VIN) before shipping it. This loads the latest factory software and calibrations specific to your Buick Rainier, making the unit ready for immediate installation without any additional programming.
Is this part difficult to install?
For someone with basic mechanical skills, the installation is straightforward. The TCM on a 2006-2007 Rainier is typically located in the engine compartment. The process involves disconnecting the battery, unplugging the electrical connectors, unbolting the old module, and installing the new one. Most installations take under 30 minutes.
Will this fix my transmission being stuck in ‘limp mode’?
Yes, in most cases. Limp mode is a protective measure triggered by the vehicle’s computer when it detects a critical fault, often from a failing TCM. Replacing the faulty module with this correctly programmed 2006-2007 Buick Rainier transmission control module resolves the root cause of the fault, allowing the transmission to function normally again.
Do I need to return my old part?
No, there is no core charge for this part. You can keep or dispose of your old module, simplifying the repair process for you.
How can I be sure my TCM is the problem?
While the symptoms listed are strong indicators, a proper diagnosis with a professional scan tool is the best way to confirm. Common TCM-related codes like P0700 (Transmission Control System Malfunction) and various solenoid codes (P0751, P0756, etc.) point directly to a faulty module.