Is Your Pontiac G6 Shifting Erratically?
If you’re experiencing harsh shifting, delayed gear engagement, or your 2006-2010 Pontiac G6 is stuck in limp mode, a failing Transmission Control Module (TCM) is the most likely culprit. The TCM is the electronic brain of your automatic transmission, responsible for orchestrating every gear change, managing torque converter lockup, and monitoring system health. When it begins to fail, it can cause a cascade of frustrating and potentially damaging issues, from poor fuel economy to a complete loss of drivability.
This genuine OEM-quality T42 TCM, part number 24238856, is the definitive solution to restore your vehicle’s transmission performance. It’s not just a replacement part; it’s a pre-programmed, plug-and-play fix engineered to communicate flawlessly with your G6’s specific systems. By taking control of shift solenoids and interpreting sensor data correctly, this module ensures your transmission operates with the smoothness and precision it had from the factory.
From the Diagnostic Bay
We had a 2008 Pontiac G6 come into the shop that was stuck in third gear—a classic limp mode symptom. The owner had already replaced two shift solenoids with no success. A quick scan showed a P0700 (Transmission Control System Malfunction) and an internal processor error code for the TCM. Instead of more guesswork, we installed one of our VIN-programmed T42 modules. After a 20-minute installation at the LH strut tower and clearing the codes, the car was shifting perfectly through all gears on the test drive. The pre-programming saved the customer a trip to the dealer and hundreds of dollars in diagnostic and programming fees.
Your Direct-Fit 2006-2010 G6 Transmission Module Solution
Don’t let a faulty computer dictate your driving experience. This T42 TCM is meticulously prepared for your specific vehicle. We use your Vehicle Identification Number (VIN) to load the latest GM software and calibrations directly onto the module before it ships. This critical step eliminates the need for expensive dealership programming and ensures that the module works correctly right out of the box. It resolves common communication errors and Diagnostic Trouble Codes (DTCs) that generic or non-programmed modules can’t fix, making it the most reliable and efficient repair for your 2006-2010 G6 Transmission Module.
Symptoms of a Failing G6 TCM
- ✔ Erratic and Harsh Shifting: Experiencing jarring shifts, banging into gear, or unpredictable gear changes.
- ✔ Limp Mode Activation: The vehicle is stuck in a single gear (usually 2nd or 3rd) with significantly reduced power.
- ✔ Warning Lights: The Check Engine Light or a specific transmission warning light is illuminated on your dashboard.
- ✔ Diagnostic Trouble Codes: Your mechanic finds codes like P0700, P0750, P0753, or other solenoid-related faults.
- ✔ Delayed Engagement: A noticeable pause when shifting from Park into Drive or Reverse.
- ✔ Poor Fuel Economy: Inefficient shifting leads to the engine running at non-optimal RPMs, increasing fuel consumption.
- ✔ No Communication: A scan tool is unable to communicate with the transmission control module.
Why Choose Our Pre-Programmed TCM?
This isn’t just another part off the shelf. It’s a comprehensive repair solution. Built to strict OEM standards, it guarantees the durability and performance your vehicle needs. The VIN-specific programming ensures that all transmission parameters, shift points, and torque converter strategies are perfectly matched to your G6’s powertrain. This module is also a direct replacement for a wide range of service numbers, including 24242391, 24234503, 24252114, and more, ensuring broad compatibility across the GM platform. With a one-year warranty and no core charge, you can complete your repair with confidence and convenience.
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. Simply provide your VIN at checkout, and the module will arrive ready for a plug-and-play installation, saving you time and money.
Where is the TCM located on my 2006-2010 Pontiac G6?
On the Pontiac G6, the Transmission Control Module is typically located on the driver’s side of the engine compartment, mounted to the LH strut tower. Always disconnect the battery before beginning the replacement.
Will this fix my P0700 trouble code?
A P0700 code is a general fault code indicating the TCM has detected a problem. While this module often resolves the root cause of a P0700, it’s essential to diagnose any other underlying codes. In many cases where the TCM itself has failed internally, replacing it with this programmed unit will clear the code and restore function.
Is this compatible with other GM vehicles?
Yes, this T42 TCM is compatible with a wide range of GM vehicles from 2006-2014 that use 4-speed automatic transmissions like the 4L60E, 4L65E, and 4L70E. This includes models like the Chevy Cobalt, HHR, Impala, GMC Sierra, and Buick LaCrosse. The VIN programming ensures it works correctly for your specific application.
Do I need to return my old TCM?
No, there is no core charge for this part. You can keep your old module, which simplifies the process and saves you the hassle and cost of return shipping.