Is your 2006-2010 Pontiac G6 struggling with harsh shifts, getting stuck in gear, or throwing transmission codes? Don’t let a faulty Transmission Control Module (TCM) ruin your driving experience. As a technician with over two decades of experience, I’ve seen countless GM vehicles sidelined by these exact issues. The TCM is the brain of your automatic transmission, and when it fails, the symptoms can range from annoying to dangerous. This T42 TCM, part number 24235754, is the definitive, reliable solution to get your G6 back to shifting smoothly and efficiently.
What makes this part the right choice is our expert VIN programming service. Before we ship it, we flash the module with your car’s specific Vehicle Identification Number and the latest GM software. This means it arrives at your door ready for a true plug-and-play installation, completely bypassing the need for an expensive and time-consuming trip to the dealership for programming. It’s a fix designed for both the seasoned mechanic and the capable DIYer who wants to save money without compromising on quality.
Case Study: The Ghost in the G6 Transmission
A customer brought in a 2009 Pontiac G6 with a frustrating problem: it would occasionally slam into gear, but only after driving for 20-30 minutes. There were no consistent codes, just a generic P0700 (Transmission Control System Malfunction) that would pop up now and then. We checked the fluid, solenoids, and wiring, but everything looked fine. In my experience, these intermittent, heat-related electrical gremlins in GM transmissions often point directly to a failing TCM. The internal circuit board develops micro-fractures that only cause issues once the module heats up. We installed one of our pre-programmed T42 TCMs, and the problem vanished instantly. The customer saved hundreds compared to a dealer diagnosis and repair.
Is Your G6 Showing These Transmission Warning Signs?
A failing TCM will give you clear signals. If you’re experiencing any of the following, it’s highly likely this module is the culprit:
- âś” Harsh, banging, or erratic gear shifts.
- âś” The vehicle is stuck in “limp mode” and won’t shift out of 2nd or 3rd gear.
- âś” Check Engine Light or Transmission Warning Light is on with codes like P0700, P0750, or other solenoid-related faults.
- âś” Delayed engagement when shifting from Park to Drive or Reverse.
- âś” Complete failure to upshift or downshift, leading to poor acceleration.
- âś” A noticeable drop in fuel economy due to inefficient shifting.
Simple DIY Installation for Your Pontiac G6
You don’t need a professional lift or specialized equipment for this job. For the Pontiac G6, the TCM is conveniently located and the swap takes less than 30 minutes.
- Safety First: Locate your vehicle’s battery and disconnect the negative terminal to prevent electrical shorts and help reset the system.
- Locate the Module: On your 2006-2010 Pontiac G6, the TCM is 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 harness connectors. Then, unbolt the module from its mounting bracket.
- Install the New TCM: Bolt the new, pre-programmed module into place and securely reconnect the wiring harnesses. You’ll hear a click when they’re seated properly.
- Final Steps: Reconnect the negative battery terminal. Start the car and let it run for a few minutes. While not always necessary, using a basic OBD2 scan tool to clear any stored transmission codes is good practice.
Guaranteed Fitment for Your Vehicle
This module is a direct-fit replacement for the 2006-2010 G6 TCM. It is also compatible with a wide range of other General Motors vehicles that use the T42 controller, ensuring OEM-level function and reliability. This part interchanges with several numbers, including 24252114, 24234503, 24240449, and your specific part number 24235754. Please see the detailed list below to confirm fitment for other models.
This part will fit these makes and models with these options
G6 06-10 Transmission; (LH strut tower)
… and many other GM models including Chevrolet Cobalt, HHR; Saturn Aura, Ion; Pontiac G5, and more from 2006-2014.
Frequently Asked Questions
What does “VIN Programmed” actually mean?
It means we load your vehicle’s unique 17-digit VIN into the module before shipping. This ensures the TCM has the correct software and calibration for your specific engine, transmission, and options, making it ready to install without any dealer intervention.
Do I have to send my old TCM back (core charge)?
No, there is absolutely no core charge. You can keep your old part, which saves you the time and hassle of return shipping.
Will this fix a P0700 trouble code on my Pontiac G6?
A P0700 code is a general fault code indicating the TCM has detected a problem. While this module often resolves the root cause (like a solenoid circuit fault originating in the TCM), you should ensure other potential issues like wiring or solenoids have been checked. In many cases, a faulty TCM is the direct cause.
Is this a new or used part?
This is a high-quality, OEM-spec replacement part that has been expertly tested and programmed to ensure reliability. It is backed by our one-year warranty for your peace of mind.