Restore Flawless Shifting to Your Pontiac G6
Is your 2006-2010 Pontiac G6 suffering from erratic shifting, getting stuck in gear, or displaying a check engine light with transmission codes? These are classic signs of a failing Transmission Control Module (TCM). The TCM is the electronic brain of your automatic transmission, responsible for orchestrating gear changes, managing torque converter lockup, and ensuring smooth, efficient operation. When it fails, it can make your vehicle unreliable and frustrating to drive. This OEM-quality T42 TCM, service number 24235340, is the definitive solution, arriving pre-programmed to your vehicle’s specific VIN for a true plug-and-play repair.
We had a 2008 Pontiac G6 come into the shop that was stuck in 3rd gear—a classic limp mode symptom. The owner had already replaced two shift solenoids based on the codes he pulled, but the problem persisted. After a quick scan, we saw the tell-tale P0700 code, which is a general transmission fault request. Digging deeper, we found communication errors between the ECM and the TCM. The issue wasn’t the solenoids; it was the module commanding them. We installed a VIN-programmed T42 TCM, cleared the codes, and the car shifted perfectly on the test drive. It’s a prime example of how targeting the root cause—the failing computer—saves time and money over just chasing symptom codes.
Symptoms of a Failing 2006-2010 G6 TCM
A faulty TCM can manifest in various ways, often starting as intermittent issues before becoming a constant problem. If you’re experiencing any of the following, it’s highly likely your transmission control module needs replacement:
- ✔ Harsh or Delayed Shifting: Your G6 may slam into gear, hesitate before shifting, or refuse to shift at the correct RPM.
- ✔ Stuck in Limp Mode: The vehicle may be locked in a single gear (usually 2nd or 3rd) to prevent further damage, resulting in poor acceleration and high engine speeds.
- ✔ Warning Lights: The Check Engine Light or a specific transmission warning light will illuminate on your dashboard.
- ✔ Diagnostic Trouble Codes (DTCs): Common codes associated with TCM failure include P0700, P0750-P0758 (solenoid circuit faults), and communication codes (U-codes).
- ✔ Poor Fuel Economy: Inefficient shifting and torque converter operation caused by a bad module can lead to a noticeable drop in MPG.
- ✔ No Upshift or Downshift: The transmission may fail to shift into higher gears or downshift when you slow down, creating a hazardous driving condition.
The Plug-and-Play Advantage: VIN Programming Included
Why choose our module? Because we eliminate the most complicated step of the repair process. Dealerships and many other sellers provide a blank module that requires expensive and specialized programming tools to make it work with your car. Our process is different. We take your vehicle’s VIN at checkout and program the module with the latest GM software specific to your Pontiac G6. This ensures that when the module arrives, it’s ready for immediate installation without any extra trips to a mechanic or dealer. It’s a simple, effective solution that restores your transmission’s factory performance.
This T42 TCM is a direct replacement for a wide range of GM vehicles equipped with 4-speed automatic transmissions like the 4L60E, 4L65E, and 4L70E. It is interchangeable with numerous part numbers, including 24252114, 24234503, 24230461, 24235340, and more, guaranteeing broad compatibility.
Installation is Simple
For the Pontiac G6, the TCM is typically located on the driver’s side, attached to the strut tower. The replacement process is straightforward for a DIY mechanic with basic tools. 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 ready to go. We recommend using a basic scan tool to clear any stored fault codes after installation to ensure the system is fully reset. Best of all, there is no core charge, so you don’t have to worry about the cost and hassle of sending your old part back.
Frequently Asked Questions
Do I need to get this TCM programmed by a dealer?
No. This module comes pre-programmed to your vehicle’s specific VIN. Simply provide your VIN during checkout, and the module will arrive ready for plug-and-play installation, saving you time and money on dealership programming fees.
Where is the TCM located on my 2007 Pontiac G6?
On the 2006-2010 Pontiac G6, the Transmission Control Module (TCM) is typically found in the engine compartment, mounted to the driver’s side (LH) strut tower. It’s a silver box with large electrical connectors.
Will this fix a P0700 trouble code?
A P0700 code is a general transmission fault indicator, meaning the TCM has detected a problem and requested the check engine light. While this module often resolves the underlying issues that cause a P0700 (like internal circuit failure or solenoid command faults), you should always diagnose any other specific codes that are present alongside it.
Is this compatible with other GM vehicles?
Yes, this T42 TCM is compatible with a wide array of 2006-2014 GM vehicles, including models like the Chevrolet Impala, Cobalt, HHR, GMC Sierra, Buick LaCrosse, and many others using a 4-speed automatic transmission. The key is that it will be programmed specifically for the vehicle you order it for.
What is the warranty on this part?
This transmission control module comes with a one-year warranty, ensuring peace of mind and protecting you against any defects in materials or workmanship.