Restore Smooth, Reliable Shifting to Your Pontiac G6
If you’re dealing with the frustration of a Pontiac G6 that slams into gear, refuses to shift, or is stuck in limp mode, you know how quickly it can ruin your driving experience. As a technician with over two decades in the bay, I’ve seen countless drivers worry they’re facing a catastrophic transmission failure when the real culprit is a faulty electronic module. This T42 Transmission Control Module (TCM), specifically for your 2006-2010 G6 Transmission Control Module, is the definitive, hassle-free solution to get your car driving like new again.
The TCM is the brain of your automatic transmission, responsible for processing sensor data to command precise gear changes and torque converter operation. When it fails, communication breaks down, leading to the jarring shifts and warning lights you’re likely experiencing. Our module comes fully pre-programmed to your vehicle’s specific VIN, eliminating the need for expensive dealership visits and programming fees. It’s a direct-fit replacement, ready to install right out of the box.
A Technician’s Notebook: The Misleading P0758 Code
A 2009 Pontiac G6 came into my shop last month. The owner was convinced his transmission was toast. It was shifting hard from 1-2 and had a persistent Check Engine Light for code P0758 (Shift Solenoid B Electrical). He had already replaced the solenoid with no change. After a quick diagnostic check, I saw the command signals from the TCM were erratic. The solenoid was fine; the driver inside the TCM had failed—a common issue from heat and vibration. Instead of a multi-thousand dollar transmission job, we installed one of these VIN-programmed TCMs. In under an hour, the car was shifting perfectly, the code was gone, and the customer saved a fortune. It’s often the brain, not the muscle, that’s the problem.
Is Your Pontiac G6 Exhibiting These Transmission Woes?
A failing TCM can manifest in several ways. If you’re noticing any of these classic symptoms, this module is the likely solution your vehicle needs.
- ✔ Harsh, erratic, or delayed gear shifts that make driving uncomfortable.
- ✔ Vehicle is stuck in a single gear (often 2nd or 3rd), also known as “limp mode.”
- ✔ Check Engine Light or Transmission Warning Light is illuminated on your dash.
- ✔ Diagnostic Trouble Codes (DTCs) are present, such as the general P0700 or specific solenoid codes like P0751, P0753, P0756, or P0758.
- ✔ A sudden drop in fuel economy as the transmission operates inefficiently.
- ✔ The transmission seems to slip out of gear or fails to engage properly from Park.
DIY-Friendly Installation for Your Pontiac G6
One of the best features of this part is its straightforward installation, which most DIY mechanics can complete in their own driveway in under 30 minutes. This specific 2006-2010 G6 Transmission Control Module is easily accessible.
- Safety First: Disconnect the negative terminal from your car’s battery to prevent any electrical shorts and to help reset the system.
- Locate the Module: On the 2006-2010 Pontiac G6, the TCM is conveniently located on the driver’s side of the engine bay, mounted to the left-hand (LH) strut tower.
- Disconnect and Remove: Carefully unplug the electrical connectors. Press the release tabs firmly. Then, unbolt the module from its mounting bracket.
- Install the New Module: Bolt the new, pre-programmed module into place and securely reconnect the wiring harnesses. You should hear a click as they lock in.
- Final Steps: Reconnect the battery terminal. While the module is plug-and-play, it’s always best practice to use a basic OBD2 scan tool to clear any stored fault codes from the vehicle’s memory.
Verified Compatibility Across the GM Family
While this is the perfect solution for your Pontiac G6, this T42 TCM is also compatible with a wide array of other General Motors vehicles. It is designed to interchange with part numbers 24252114, 24234503, 24242391, and more, ensuring broad application for a reliable repair.
- Pontiac: G6 (2006-2010), Grand Prix (2006-2008), Pursuit (2006)
- Chevrolet: Cobalt (2006-2010), HHR (2006-2011), Impala (2006-2011), Malibu (2006-2010), Silverado, Tahoe, Express Van
- Saturn: Aura (2007-2009), Ion (2006-2007), Vue (2007-2010)
- Buick: LaCrosse (2006-2009), Lucerne (2006-2011), Allure (2006-2009)
- And many more GMC, Cadillac, Hummer, and Saab models.
Frequently Asked Questions
Do I need to take my car to the dealer for programming?
No. This module arrives pre-programmed to your car’s VIN. This makes the installation plug-and-play, saving you the time, hassle, and expense of a dealership visit.
Where is the TCM located on my 2007 Pontiac G6?
On the 2006-2010 Pontiac G6, the Transmission Control Module is found in the engine compartment, bolted directly to the driver’s side strut tower. It’s easily accessible once you open the hood.
Will this part fix a P0700 trouble code?
A P0700 code is a general fault code indicating the TCM has detected a problem. This module often resolves the root cause, which could be an internal failure triggering that code. After installation, be sure to clear all codes.
Is this a reliable, long-term fix?
Absolutely. This module is built to meet or exceed OEM specifications for performance and durability. It comes with a one-year warranty, giving you peace of mind that you’re making a lasting repair.
Is there a core charge for my old part?
No, there is no core charge. You are not required to send your old, faulty module back to us, which simplifies the process for you.