Restore Peak Transmission Performance in Your Buick Rainier
Is your 2006-2007 Buick Rainier suffering from erratic shifting, getting stuck in gear, or displaying transmission-related warning lights? These are classic signs of a failing Transmission Control Module (TCM). The TCM is the electronic brain of your automatic transmission, responsible for orchestrating smooth gear changes, managing torque converter lockup, and ensuring overall drivetrain efficiency. When it fails, it can cripple your vehicle’s performance and leave you stranded. This OEM-quality GM T42 TCM, part number 24234274, is the definitive solution to restore your vehicle’s factory performance and reliability.
From the Diagnostic Bay
We recently had a 2007 GMC Envoy (which shares the same platform as the Rainier) come into the shop with a P0752 code, indicating a ‘Shift Solenoid A Stuck On’ issue. The owner had already spent hundreds of dollars replacing the solenoid pack inside the transmission pan, but the problem persisted. After a quick scan and data stream analysis, we identified the real culprit: the driver circuit inside the original TCM was failing intermittently. It wasn’t the solenoid at all. We installed one of our VIN-programmed T42 modules, cleared the codes, and the truck was shifting perfectly within 30 minutes. This is a common scenario that highlights the importance of correctly diagnosing TCM failure before attempting costly internal transmission repairs.
Is Your Buick Rainier Showing These Symptoms?
- ✔️ Harsh, delayed, or unpredictable gear shifts.
- ✔️ The vehicle is stuck in “limp mode,” often in 2nd or 3rd gear.
- ✔️ Check Engine Light or Transmission Warning Light is illuminated on the dash.
- ✔️ Diagnostic Trouble Codes (DTCs) such as P0700, P0750, or other solenoid-specific codes are present.
- ✔️ Failure to upshift or downshift correctly, leading to poor acceleration.
- ✔️ A noticeable decrease in fuel economy.
- ✔️ Intermittent loss of communication with the transmission module.
The Direct Solution: A VIN-Programmed 2006-2007 Rainier Transmission Module
Don’t settle for a generic, unprogrammed module that requires an expensive trip to the dealership. Our T42 TCMs are meticulously prepared for your specific vehicle. We flash the module with your vehicle’s unique Vehicle Identification Number (VIN) and load the latest GM-certified software updates. This process ensures complete plug-and-play functionality the moment you install it. Your vehicle’s computer will recognize it instantly, restoring all communication and operational parameters to factory specifications. This VIN programming is critical for optimal shift points, fuel efficiency, and long-term transmission health.
Simple Installation to Get You Back on the Road
This module is designed for a straightforward installation that can be completed by a competent DIY mechanic. For the 2006-2007 Buick Rainier, the TCM is typically located in the engine compartment. Always disconnect the vehicle’s battery before beginning the removal and installation process to ensure safety and help reset the vehicle’s electronic systems. After installing the new module and reconnecting the battery, use a standard OBD2 scan tool to clear any stored diagnostic trouble codes. Best of all, there is no core charge—you can keep your old part without the hassle of returning it.
Frequently Asked Questions
Do I need to have this module programmed by a dealer?
No. This module comes pre-programmed to your vehicle’s specific VIN. It is a true plug-and-play solution that does not require any additional programming or calibration from a dealership, saving you time and money.
Where is the TCM located on a 2006-2007 Buick Rainier?
On the Buick Rainier and similar GMT360 platform vehicles, the Transmission Control Module is typically located in the engine compartment, often on the driver’s side near the firewall or inner fender.
What happens if I continue driving with a faulty TCM?
Continuing to operate your vehicle with a failing TCM can lead to more severe transmission damage. Poor shifting can cause excessive wear on clutches and bands, and incorrect fluid pressure can lead to overheating, potentially resulting in a complete transmission failure that is far more costly to repair.
Is this compatible with other GM vehicles?
Yes, this T42 TCM is compatible with a wide range of 2006-2014 GM vehicles equipped with 4-speed automatic transmissions like the 4L60E, 4L65E, and 4L70E. It is an interchangeable replacement for numerous part numbers, including 24252114, 24234503, and 24230461.
What tools are required for installation?
Installation typically requires only basic hand tools, such as a socket set and ratchet, to remove the mounting bolts and disconnect the electrical connectors. A simple OBD2 scan tool is also recommended to clear any fault codes after the installation is complete.