Restore Crisp, Reliable Shifting to Your Pontiac G6
Is your 2006-2010 Pontiac G6 suffering from frustrating and unpredictable transmission issues? Harsh shifts, getting stuck in gear, or an illuminated check engine light can make driving a stressful experience. The Transmission Control Module (TCM), the electronic brain of your automatic transmission, is often the source of these problems. This direct-replacement T42 TCM, part number 24239926, is the definitive solution, arriving pre-programmed to your vehicle’s specific VIN for a true plug-and-play repair that requires no expensive dealership visit.
As a technician with over two decades of experience, I’ve seen countless GM vehicles, including the G6, come into the shop with what seems like a major transmission failure. More often than not, the culprit is a faulty TCM. This module precisely manages shift points, torque converter lockup, and line pressure. When it fails, communication is lost, leading to poor performance and potential damage. Our 2006-2010 Pontiac G6 TCM restores this critical communication, bringing back the smooth operation you expect from your car.
Case Study: A Tricky Diagnosis
A customer brought in a 2008 Pontiac G6 with an intermittent ‘no-upshift’ condition and a P0700 code. They were worried they needed a full transmission rebuild. After checking the fluid and wiring, my scan tool pointed to erratic solenoid commands from the TCM. Instead of a $2,500+ mechanical repair, we installed one of these VIN-programmed modules. The entire job took less than an hour in the bay. The codes cleared, the car shifted perfectly on the test drive, and the customer was saved a massive headache and expense. This is a common scenario where replacing the TCM is the correct, cost-effective fix.
Common Signs of a Failing G6 TCM
If you’re experiencing any of the following, a faulty TCM is the likely cause. Replacing your 2006-2010 Pontiac G6 TCM can resolve these issues:
- ✔ Abrupt, hard, or delayed gear shifts.
- ✔ Vehicle is stuck in a single gear (limp mode), often 2nd or 3rd.
- ✔ The check engine light or transmission warning light is on.
- ✔ Diagnostic Trouble Codes (DTCs) are present, such as P0700, P0750-P0758, or other solenoid-related faults.
- ✔ Inability to shift into higher or lower gears.
- ✔ Noticeable decrease in fuel efficiency.
- ✔ The transmission seems to slip out of gear unexpectedly.
A Straightforward Guide to Installation
This module is designed for a simple, direct-fit replacement. For the Pontiac G6, the TCM is typically located on the driver’s side of the engine bay, mounted to the strut tower. You can have your car back to normal in under 30 minutes.
- Safety First: Disconnect the negative terminal from your vehicle’s battery to prevent any electrical shorts and to help reset the system.
- Locate the Module: Find the old TCM on the LH strut tower. It’s a silver box with several large electrical connectors.
- Disconnect and Remove: Carefully unplug the wiring harness connectors. Then, unbolt the module from its mounting bracket.
- Install the New TCM: Mount your new, pre-programmed module in place of the old one and securely reconnect the wiring harnesses.
- Final Steps: Reconnect the battery terminal. While the module is plug-and-play, it’s always good practice to use a scan tool to verify that no old fault codes remain in the system.
Verified Vehicle Compatibility
This T42 TCM is the correct replacement for the 2006-2010 Pontiac G6. It is also a direct fit for a wide range of other General Motors vehicles, ensuring broad compatibility and OEM-level function. This part is interchangeable with service numbers including 24252114, 24234503, 24239926, 24242391, and more. See the detailed list below to confirm your specific model.
This part will fit these makes and models with these options
G6 06-10 Transmission; (LH strut tower)
ALLURE 06-09 Transmission; (lower air cleaner housing)
AURA 07-09 Transmission; (LH frame rail front)
AVALANCHE 1500 07-08 Transmission; (next to battery)
CANYON 08-12 Transmission; (RH rear engine compartment)
COBALT 06-10 Transmission; (LH strut tower)
COLORADO 08-12 Transmission; (RH rear engine compartment)
DTS 06-11 Transmission; (RH front engine compartment)
ENVOY 06-09 Transmission; (LH engine compartment)
EXPRESS VANS 06-14 Transmission; (RH engine compartment)
G5 07-10 Transmission; (LH strut tower)
GRAND PRIX 06-08 Transmission; (lower air cleaner housing)
HHR 06-11 Transmission; (LH engine compartment)
HUMMER H3 08-10 Transmission; (RH rear engine compartment)
IMPALA 06-11 Transmission; (lower air cleaner housing)
ION 06-07 Transmission; (behind LH strut tower)
LACROSSE 06-09 Transmission; (lower air cleaner housing)
LUCERNE 06-11 Transmission; (LH engine compartment)
MALIBU 06-10 Transmission; (LH frame rail)
MONTE CARLO 06-07 Transmission; (lower air cleaner housing)
MONTANA 06-09 Transmission; (LH strut tower)
RAINIER 06-07 Transmission
RENDEZVOUS 06-07 Transmission; (air cleaner box)
SAAB 9-7X 06-09 Transmission; (LH engine compartment)
SIERRA PICKUPS 07-13 Transmission; (next to battery)
SILVERADO PICKUPS 07-13 Transmission; (next to battery)
SSR 05-06 Transmission; (front LH frame)
SUBURBAN 1500 07-08 Transmission; (next to battery)
TAHOE 07-09 Transmission; (next to battery)
TERRAZA 06-07 Transmission; (LH strut tower)
TRAILBLAZER 06-09 Transmission; (LH engine compartment)
UPLANDER 06-09 Transmission; (LH strut tower)
VUE 07-10 Transmission
YUKON & YUKON XL 07-09 Transmission; (next to battery)
Frequently Asked Questions
Do I need to have this module programmed by a dealer?
No. This module is delivered to you pre-programmed using your vehicle’s VIN. It is ready for installation right out of the box, saving you hundreds of dollars in dealership programming fees.
Is this a reliable part?
Absolutely. Each module is built to meet or exceed OEM specifications and undergoes rigorous testing to ensure dependable performance. It’s backed by our one-year warranty for your peace of mind.
Will this fix a P0700 trouble code?
A P0700 code is a general transmission fault request from the TCM to the main computer. In many cases, a failing TCM is the root cause, and replacing it will resolve the P0700 code along with other specific transmission codes.
What tools do I need to install this?
Installation typically requires only basic hand tools, such as a socket set and ratchet to remove the mounting bolts and disconnect the battery. No specialized electronic tools are needed.
Is there a core charge for my old part?
No, there is no core charge. You can keep your old module without the hassle of returning it, making the repair process even simpler.