Restore Flawless Shifting to Your Pontiac G6
Is your 2006-2010 Pontiac G6 suffering from jerky shifting, getting stuck in gear, or throwing transmission-related check engine lights? You’re not alone. After 20 years in automotive diagnostics, I’ve seen countless GM vehicles, including the G6, sidelined by a faulty Transmission Control Module (TCM). The TCM is the electronic brain of your automatic transmission, and when it fails, it can cause a host of frustrating and potentially damaging issues. This OEM-quality T42 TCM, part number 24243901, is the definitive solution, arriving pre-programmed to your vehicle’s VIN for a true plug-and-play repair.
A Technician’s Notebook: The Case of the Limping G6
A customer brought in a 2008 Pontiac G6 that was stuck in what we call ‘limp mode’—it wouldn’t shift past 3rd gear. The dash was lit up with a check engine light, and my scan tool pulled a P0700 (Transmission Control System Malfunction) and a few solenoid circuit codes. Instead of chasing ghosts by replacing individual solenoids, my experience pointed directly to the TCM. These modules are known to develop internal faults that disrupt communication. We installed one of our VIN-programmed T42 modules, cleared the codes, and the car was shifting perfectly on the test drive 30 minutes later. The customer avoided a costly dealership visit and a lengthy diagnostic process.
Is Your Pontiac G6 Exhibiting These Transmission Faults?
A failing TCM can manifest in several ways. If you’re experiencing any of the following, this module is the likely solution for your 2006-2010 G6 Transmission Module issues:
- ✔ Hard, slamming shifts or sudden, erratic gear changes.
- ✔ The vehicle refuses to shift out of a single gear (often 2nd or 3rd).
- ✔ An illuminated Check Engine Light or Transmission Warning Light.
- ✔ Diagnostic Trouble Codes (DTCs) such as P0700, P0750, or other solenoid-related faults.
- ✔ Delayed engagement when shifting from Park to Drive or Reverse.
- ✔ Poor acceleration and a noticeable drop in fuel economy.
- ✔ Complete loss of communication with the transmission.
DIY-Friendly Installation: Get Your G6 Shifting Smoothly in Minutes
One of the best features of this repair is its simplicity. For the Pontiac G6, the TCM is conveniently located and easy to access, making this a perfect job for a DIY enthusiast. No specialized tools are required.
- Safety First: Disconnect the negative terminal from your car’s battery to prevent any electrical shorts and to help reset the vehicle’s computer systems.
- Locate the Module: On your 2006-2010 Pontiac G6, the TCM is found mounted on the driver’s side (LH) strut tower in the engine bay. It’s a silver box with electrical connectors.
- Disconnect and Remove: Carefully unplug the electrical harnesses from the old module. Then, unbolt the module from its mounting bracket.
- Install the New Module: Bolt the new, VIN-programmed TCM into place and securely reconnect the electrical harnesses. You should hear a click as they lock in.
- Reconnect and Verify: Reconnect the negative battery terminal. Start the vehicle and check for any warning lights. A short test drive will confirm that normal shifting has been restored.
Verified Vehicle Compatibility
While this is the correct 2006-2010 G6 Transmission Module, this T42 unit also fits a wide range of other General Motors vehicles. It is a direct replacement for part numbers 24243901, 24252114, 24234503, and others. Please verify your specific model in the list below or contact us for confirmation.
- Pontiac: G6 (2006-10), G5 (2007-10), Grand Prix (2006-08), Solstice, Torrent, Vibe
- Chevrolet: Cobalt (2006-10), HHR (2006-11), Impala (2006-11), Malibu (2006-10), Silverado, Tahoe, Express Van
- GMC: Sierra, Yukon, Savana Van, Canyon
- Buick: LaCrosse (2006-09), Lucerne (2006-11), Allure
- Saturn: Aura (2007-09), Ion (2006-07), Vue
- And more… including select Cadillac, Hummer, and Saab models.
Frequently Asked Questions
What exactly is VIN Programming and why do I need it?
VIN Programming is the process where we load your vehicle’s specific Vehicle Identification Number (VIN) and the latest GM software onto the module before we ship it. This ensures the TCM communicates perfectly with your car’s engine computer and other systems, just like the original part. It eliminates the need for an expensive programming service at a dealership.
Will this module fix a P0700 trouble code?
Yes, in many cases. A P0700 code is a general fault code indicating the TCM has detected a problem. Often, the problem is the TCM itself. Replacing a faulty module with this pre-programmed unit is a very common and effective fix for a persistent P0700 code.
Is this a difficult part to install myself?
Not at all, especially on the Pontiac G6. The module is located on the driver’s side strut tower in the engine bay, making it very accessible. With basic hand tools, most people can complete the swap in under 30 minutes.
Do I have to send my old part back?
No. We do not require a core return for this part. You can keep your old module, which simplifies the process for you.