Tired of Harsh Shifts and Warning Lights in Your Buick Rainier?
Is your 2006-2007 Buick Rainier suffering from jarring shifts, getting stuck in gear, or displaying a persistent check engine light? A faulty Transmission Control Module (TCM) is often the culprit behind these frustrating and concerning issues. Don’t let a small electronic component compromise the smooth, comfortable ride you expect from your vehicle. This pre-programmed T42 TCM is the definitive solution, engineered to restore your transmission’s performance and get you back on the road with confidence.
Common Symptoms & Your Solution
A failing TCM can manifest in several ways, turning your daily drive into a stressful experience. If you’re noticing any of the following, this module is the reliable fix you need:
- Abrupt, harsh, or delayed gear shifts
- The vehicle enters “limp mode,” stuck in a single gear (often 2nd or 3rd)
- Transmission or Check Engine warning lights are illuminated on your dash
- Diagnostic Trouble Codes (DTCs) such as P0700, P0750, or other solenoid-related faults are present
- A noticeable decrease in fuel economy
- Complete failure to shift gears up or down
This replacement 2006-2007 Buick Rainier transmission control module arrives programmed specifically to your vehicle’s VIN, ensuring it works perfectly right out of the box, with no expensive dealership programming required.
Features & Tangible Benefits
- ✔ Plug & Play Installation: This module is pre-programmed to your vehicle’s unique VIN. This critical step ensures complete compatibility with your Rainier’s systems, eliminating the need for a trip to the dealer for expensive programming.
- ✔ Restored Driving Comfort: By precisely managing shift points and torque converter lockup, this TCM restores the smooth, seamless gear changes your vehicle had when it was new.
- ✔ Eliminate Annoying Warning Lights: A properly functioning module resolves the internal electronic faults that trigger transmission-related check engine lights and DTCs.
- ✔ OEM-Standard Quality: Built to meet or exceed original equipment specifications, this module provides dependable, long-term performance you can count on. It is a direct replacement for service numbers including 24252114, 24234503, and 24256960.
- ✔ Guaranteed Performance: This unit is backed by our one-year replacement warranty.
Expert Insight: Why VIN Programming is Non-Negotiable
In modern vehicles like your Buick Rainier, the TCM doesn’t work in isolation. It constantly communicates with the Engine Control Module (ECM), ABS, and other vehicle systems. VIN programming is like giving the new module a specific identity that your car’s network recognizes. A generic, non-programmed module is like a stranger trying to join a private conversation—the other computers won’t communicate with it correctly, leading to continued shifting problems or even a no-start condition. Our pre-programming service saves you the headache and expense of a dealership visit, making this a true DIY-friendly repair.
Frequently Asked Questions
Will this TCM fit my 2006 Buick Rainier?
Yes, this 2006-2007 Buick Rainier transmission control module is guaranteed to be a direct fit for your vehicle. We program it using the VIN you provide during checkout to ensure 100% compatibility.
Is this part difficult to install?
Installation is straightforward for someone with basic mechanical skills and typically takes less than 30 minutes. On the Rainier, the TCM is located in the engine compartment. Simply disconnect the battery, unplug the electrical connectors from the old module, unbolt it, and install the new one in its place. Reconnect everything, and you’re done.
What does ‘VIN Programmed’ actually mean?
It means we load your vehicle’s specific software and calibration files onto the module before we ship it. This makes it a true plug-and-play part. The moment you install it, it will communicate perfectly with your Rainier’s other computers, just like the original part did.
Do I need to send my old part back?
No, there is no core charge for this part. You can keep or dispose of your old module without any extra hassle or fees.
What if I still have a check engine light after installation?
While disconnecting the battery often clears codes, some vehicles may store “hard codes.” We recommend using a basic OBD2 scan tool to clear any remaining transmission-related codes after the new module is installed to ensure the system is fully reset.