Restore Your Pontiac’s Shifting Performance
Is your 2006-2010 Pontiac G6 suffering from erratic shifting, delayed gear engagement, or a persistent check engine light? These are classic symptoms of a failing Transmission Control Module (TCM). The TCM is the electronic brain of your automatic transmission, responsible for orchestrating shift points, managing fluid pressure, and ensuring smooth, efficient operation. When it fails, it can leave your vehicle stuck in limp mode, exhibit harsh shifts, or even prevent it from moving at all. This genuine quality T42 TCM, service number 24256960, is the definitive solution to restore your vehicle’s drivability and peace of mind.
Expert Pro Tip
Before condemning your TCM, always check the main transmission harness connector for bent pins, corrosion, or fluid intrusion. Located on the side of the transmission, this connector can sometimes get contaminated, mimicking the symptoms of a failed module. A quick inspection and cleaning with electrical contact cleaner can sometimes be a much simpler fix.
Why Choose a VIN-Programmed Pontiac G6 TCM?
Replacing a modern electronic module isn’t as simple as swapping a mechanical part. The TCM must be perfectly calibrated to your vehicle’s specific configuration, including its engine size, gear ratios, and tire size. Our service eliminates the guesswork and costly dealership visits. We pre-program this module to your vehicle’s unique Vehicle Identification Number (VIN) before shipping. This ensures that when you receive the part, it is a true plug-and-play component. It arrives loaded with the latest GM software updates, ready for immediate installation without the need for expensive scan tools or programming procedures. This process corrects common software-related issues and ensures optimal communication between the TCM, the Engine Control Module (ECM), and the transmission itself, resolving a host of diagnostic trouble codes right out of the box.
Symptoms of a Failing G6 Transmission Control Module
- ✔ Erratic Shifting: Your transmission may slam into gear, hesitate between shifts, or feel like it’s slipping.
- ✔ Warning Lights: The Check Engine Light or a dedicated transmission warning light will illuminate on your dashboard.
- ✔ Stuck in Gear: The vehicle may enter a protective “limp mode,” often getting stuck in 2nd or 3rd gear to prevent further damage.
- ✔ No Upshift or Downshift: The transmission may refuse to shift into higher gears or downshift when you slow down.
- ✔ Diagnostic Trouble Codes (DTCs): You’ll likely see codes such as P0700 (Transmission Control System Malfunction), P0750-P0758 (Shift Solenoid errors), or other transmission-specific codes.
- ✔ Poor Fuel Economy: Inefficient shifting and incorrect torque converter lockup can lead to a noticeable decrease in gas mileage.
- ✔ Complete Failure to Engage: In severe cases, the vehicle may not move when you put it in Drive or Reverse.
Simple Installation for DIY and Professionals
For the Pontiac G6, the TCM is conveniently located on the driver’s side strut tower in the engine compartment, making it easily accessible. The installation process is straightforward and can typically be completed in under 30 minutes with basic hand tools. Simply disconnect the negative battery terminal, unplug the electrical connectors from the old module, unbolt it, and install the new one in its place. Once the new module is connected and the battery is reconnected, your vehicle will be ready to go. We recommend using a basic scan tool to clear any stored fault codes after installation to ensure a clean slate for the new module.
Broad Compatibility Across the GM Family
While this is the perfect solution for your 2006-2010 Pontiac G6, this T42 TCM is also compatible with a wide array of other 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, 24230461, and more. Whether you’re working on a Chevrolet Cobalt, Saturn Aura, or GMC Sierra, this module provides the same level of quality and reliability. Every module is backed by our one-year warranty, giving you confidence in your repair.
Frequently Asked Questions
What does a VIN-programmed TCM mean for me?
VIN programming means we load your car’s specific factory software and calibration files onto the module before we ship it. This makes the installation plug-and-play, saving you a trip to the dealership and the high cost of their programming services.
Will this fix my P0700 trouble code?
A P0700 code is a general fault code indicating the TCM has detected a problem. While a faulty TCM is a very common cause, this code can also be triggered by other issues like bad solenoids or wiring. Replacing a known-bad TCM is the most common fix for a persistent P0700.
Are any special tools needed for installation on my G6?
No special tools are required. Basic hand tools like a socket set and ratchet are all that’s needed to unbolt the old module and install the new one. The most important step is disconnecting the vehicle’s battery before you begin.
Where is the TCM located on my 2008 Pontiac G6?
On the 2006-2010 Pontiac G6, the Transmission Control Module is typically mounted directly to the driver’s side (LH) strut tower in the engine bay, making it very easy to access.
Do I need to send my old part back?
No, there is no core charge for this part. You can keep your old module or dispose of it at your convenience, saving you the hassle and expense of return shipping.