Is your 2006-2010 Pontiac G6 suffering from harsh shifts, getting stuck in gear, or throwing transmission codes? You’re not alone. Over my 20 years in the bay, I’ve seen countless GM vehicles, including the G6, come in with these exact symptoms. The culprit is often a failing Transmission Control Module (TCM). This isn’t just an annoyance; it affects your car’s reliability, safety, and fuel economy. Don’t let a faulty module dictate your driving experience or lead to a costly, unnecessary transmission replacement.
We offer a dependable and straightforward solution: this OEM-quality T42 Transmission Control Module, a direct replacement for part number 24230461. The most significant benefit? We pre-program it to your vehicle’s specific VIN before it even leaves our shop. This means no expensive trips to the dealership for programming. It arrives at your door ready for a true plug-and-play installation, restoring the crisp, predictable shifting your G6 had from the factory.
Is Your Pontiac G6 Showing These Transmission Problems?
A failing TCM can manifest in several ways. If you’re experiencing any of the following, this module is the likely solution. In my experience, these symptoms often appear intermittently at first before becoming constant.
- ✔ Abrupt, jerky, or delayed gear shifts.
- ✔ Vehicle is stuck in “limp mode” (usually 2nd or 3rd gear) and won’t shift.
- ✔ Check Engine Light or Transmission Warning Light is on.
- ✔ Diagnostic Trouble Codes (DTCs) are present, such as the general P0700 or specific solenoid codes (e.g., P0751, P0756).
- ✔ A noticeable drop in fuel efficiency.
- ✔ The transmission seems to slip out of gear.
From the Diagnostic Bay: The Misleading Solenoid Code
A customer brought in their 2008 G6 with a check engine light and erratic shifting. The scanner pulled a P0752 code, pointing to a stuck shift solenoid. A less experienced tech might have immediately dropped the transmission pan to replace the solenoid—a messy, time-consuming job. However, having seen this pattern hundreds of times, I knew the T42 TCMs in these cars are prone to internal circuit failure. The module fails to properly command the solenoid, which *looks* like a solenoid fault. We swapped in a programmed TCM first. The code vanished, the car shifted perfectly, and the customer saved hundreds on unnecessary labor. This is why correctly diagnosing the TCM as the root cause is crucial.
A Straightforward Guide to Your G6 TCM Swap
One of the best parts about this solution is how accessible it is for a DIY mechanic. You don’t need a vehicle lift or specialized transmission tools. For the 2006-2010 G6, the TCM is conveniently located and the job takes less than 30 minutes.
- Safety First: Disconnect the negative terminal from your car’s battery to prevent any electrical shorts and help reset the vehicle’s computer systems.
- Locate the Module: On the Pontiac G6, the TCM is typically mounted on the driver’s side strut tower in the engine bay. It’s a silver box with electrical connectors.
- Disconnect and Remove: Carefully unclip the wiring harnesses. Then, unbolt the module from its mounting bracket. Keep the hardware safe.
- Install the New Module: Bolt the new, pre-programmed TCM into place and securely reconnect the wiring harnesses. You should hear a click as they lock in.
- Final Steps: Reconnect the battery terminal. Start the car and let it idle for a few minutes. While not always necessary, using a basic OBD2 scanner to clear any stored fault codes is good practice. Take a test drive to confirm the smooth shifting.
Why Choose Our Pre-Programmed 2006-2010 G6 TCM?
This isn’t just another part; it’s a complete repair solution. By ordering from us, you get a reliable component built to OEM specifications, loaded with the latest GM software for your exact vehicle, and backed by a one-year warranty. You bypass dealer hassle and get your car back to peak performance quickly and affordably.
Verified Vehicle Compatibility
This T42 TCM, part number 24230461, is a direct fit for the following vehicles and configurations. Please verify your model and location notes.
- Pontiac G6 2006-2010: Transmission; (LH strut tower)
- Chevrolet Cobalt 2006-2010: Transmission; (LH strut tower)
- Chevrolet HHR 2006-2011: Transmission; (LH engine compartment)
- Chevrolet Impala 2006-2011: Transmission; (lower air cleaner housing)
- Chevrolet Malibu 2006-2010: Transmission; (LH frame rail)
- Chevrolet Monte Carlo 2006-2007: Transmission; (lower air cleaner housing)
- Buick Allure / LaCrosse 2006-2009: Transmission; (lower air cleaner housing)
- GMC Canyon / Chevrolet Colorado 2008-2012: Transmission; (RH rear engine compartment)
- Hummer H3 2008-2010: Transmission; (RH rear engine compartment)
- Saturn Aura 2007-2009: Transmission; (LH frame rail front)
- Saturn Ion 2006-2007: Transmission; (behind LH strut tower)
- Saturn Vue 2007-2010: Transmission; (various locations, check model specifics)
- And many other GM models from 2006-2014. Please see the full fitment list for details.
Frequently Asked Questions
Do I need to do any programming myself?
No. This is the core benefit of our service. We use your vehicle’s VIN to program the module with the correct, updated software from GM before shipping. It is 100% plug-and-play.
Is this part difficult to install at home?
Not at all. For the Pontiac G6, it’s one of the easier electronic module replacements. It’s located on the driver’s side strut tower and requires only basic hand tools. Most DIYers can complete the job in under 30 minutes.
What is a core charge? Do I need to send my old part back?
There is no core charge for this part. You can keep your old module, so there’s no hassle with return shipping or waiting for a core refund.
Will this fix a P0700 trouble code?
Yes, in many cases. A P0700 is a generic code indicating the TCM has detected a fault. If the TCM itself is the source of the fault, replacing it with this programmed unit will resolve the P0700 and any related specific codes.
What does the warranty cover?
This module comes with a one-year, no-hassle warranty covering any defects in the part itself. We stand behind the quality and reliability of our programmed electronics.