Finally, A Real Fix for Your Pontiac G6’s Shifting Problems
If you’re dealing with a 2006-2010 Pontiac G6 that slams into gear, refuses to shift, or is stuck in limp mode, you know how frustrating it can be. As a technician with over two decades of experience, I’ve seen countless drivers worry that their transmission is shot, facing a repair bill in the thousands. More often than not, the real culprit is a faulty Transmission Control Module (TCM). This module is the brain of your automatic transmission, and when it fails, it creates chaos. This T42 series TCM, part number 24243901, is the direct, reliable solution you’ve been looking for.
Case Study: The G6 Stuck in Second Gear
A customer brought in their 2008 G6, explaining it wouldn’t shift past 2nd gear and the check engine light was on. They were worried about a complete transmission rebuild. I pulled the codes and saw a P0700 (Transmission Control System Malfunction) and a P0752 (Shift Solenoid ‘A’ Stuck On). Instead of tearing into the transmission, I checked the TCM. After seeing some telltale signs of internal failure, we ordered a VIN-programmed module. Less than an hour after it arrived, the new module was in, codes were cleared, and the car was shifting perfectly. A simple, cost-effective fix that saved the customer a massive headache and expense.
The Power of a Pre-Programmed Module
The single biggest advantage of this module is that it arrives at your door fully programmed to your vehicle’s specific Vehicle Identification Number (VIN). In the past, replacing a TCM meant a trip to the dealership for expensive programming with their specialized tools. We handle all of that for you. Using the latest GM software updates, we flash the module so it’s ready for immediate installation. This isn’t just about convenience; it ensures the transmission’s shift points, torque converter lockup, and pressure controls are perfectly calibrated for your exact vehicle, restoring original performance and fuel efficiency.
Is Your Pontiac G6 Showing These Telltale Signs?
- ✔ Harsh, banging shifts or delayed gear engagement.
- ✔ Vehicle is stuck in a single gear (often called “limp mode”).
- ✔ Check Engine Light or Transmission Warning Light is illuminated.
- ✔ Diagnostic Trouble Codes (DTCs) like P0700, P0750, or other solenoid-related faults are present.
- ✔ Inconsistent shifting, poor acceleration, and decreased fuel economy.
- ✔ Complete loss of communication with the transmission module.
A Straightforward Guide to Your G6 TCM Swap
For the 2006-2010 Pontiac G6, this is a job most DIYers can handle in their own driveway. The module is typically easy to access, making for a quick swap. The key is our VIN programming, which eliminates the most difficult step. This is the definitive fix for your 2006-2010 G6 Transmission Control Module issues.
- Safety First: Disconnect the negative terminal from your car’s battery to prevent any electrical shorts.
- Locate the TCM: On the Pontiac G6, the TCM is conveniently located at the driver’s side (LH) strut tower in the engine bay.
- 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 your new, pre-programmed TCM into place and securely reconnect the electrical harnesses. You should hear a ‘click’ as they lock in.
- Final Steps: Reconnect the battery terminal. Start the vehicle and allow it to idle for a few minutes. If you have a basic scan tool, use it to clear any stored transmission codes to finalize the process.
Verified Vehicle Compatibility List
This T42 TCM, including part number 24243901, is a direct fit for a wide range of General Motors vehicles. While this page is focused on the 2006-2010 G6 Transmission Control Module, it is also compatible with the following models. Please verify your specific model and location notes.
- 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)
- PURSUIT 06 Transmission; (LH strut tower)
- RENDEZVOUS 06-07 Transmission; (air cleaner box)
- SAAB 9-7X 06-09 Transmission; (LH engine compartment)
- SAVANA VANS 06-14 Transmission; (RH 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; (engine compartment)
- YUKON & YUKON XL 07-09 Transmission; (next to battery)
Why is VIN programming so important for a TCM?
Why is VIN programming so important for a TCM?
VIN programming loads your car’s specific software into the module. Every GM vehicle has slight variations in its transmission strategy for shift timing and pressure. Our programming ensures this replacement TCM works perfectly with your G6’s engine and transmission hardware, preventing performance issues and error codes that would occur with a non-programmed unit.
Is this a difficult part to install myself?
For the Pontiac G6, this is considered a straightforward installation for a DIYer with basic tools. The module is located in an accessible spot in the engine bay (LH strut tower). Since we handle the programming, it’s a simple plug-and-play process. No special computer tools are required.
Will this fix my check engine light for code P0700?
Yes. A P0700 code is a general fault code indicating the TCM has detected a problem. It’s often accompanied by more specific codes. If the root cause is a failing module, replacing it with our programmed unit will resolve the issue and allow the codes to be cleared, turning off the light.
Do I need to send my old TCM back?
No, there is no core charge or need to return your old part. You can dispose of it or keep it, making the process faster and more convenient for you.
What kind of warranty is included?
We stand behind the quality of our modules with a comprehensive one-year warranty, giving you peace of mind that you’re making a lasting repair.