Restore Peak Performance to Your Pontiac G6
Is your 2006-2010 Pontiac G6 experiencing frustrating transmission problems like harsh shifting, delayed gear engagement, or getting stuck in limp mode? These are classic signs of a failing Transmission Control Module (TCM). The TCM is the electronic brain of your automatic transmission, responsible for coordinating every shift with precision. When it malfunctions, it can disrupt your vehicle’s drivability, fuel economy, and overall reliability. This replacement GM T42 TCM, part number YNXS, is the definitive solution to restore your transmission’s smooth and efficient operation.
Our key advantage is providing a module that is pre-programmed to your vehicle’s specific Vehicle Identification Number (VIN). This critical step ensures that the module communicates flawlessly with your G6’s other computer systems right out of the box. You can bypass the expensive and time-consuming trip to the dealership for programming. This is a direct-fit, plug-and-play component designed to get you back on the road quickly and confidently.
From the Diagnostic Bay
We had a 2008 Pontiac G6 come into the shop that was stuck in third gear—a classic limp mode symptom. The check engine light was on, and a scan revealed code P0700 (Transmission Control System Malfunction). After checking the wiring harness for damage, we identified the original TCM as the culprit. Instead of a lengthy dealer visit, we installed one of our VIN-programmed T42 modules. After a quick battery disconnect to reset the systems and clearing the codes, the car was shifting perfectly on the test drive. The customer was thrilled to have their car back the same day without the dealership hassle.
Common Symptoms of a Failing G6 TCM
If you’re unsure whether your TCM is the problem, look for these common warning signs. A failing module can manifest in several ways, often starting intermittently before becoming a constant issue.
- ✔ Harsh, jerky, or erratic shifting between gears.
- ✔ The vehicle gets stuck in a single gear (limp mode) and will not shift up or down.
- ✔ Check Engine Light or Transmission Warning Light is illuminated on the dashboard.
- ✔ Diagnostic Trouble Codes (DTCs) such as P0700, P0750, or other solenoid-related codes are stored.
- ✔ Significant delays when shifting from Park into Drive or Reverse.
- ✔ A noticeable decrease in fuel efficiency.
- ✔ Complete loss of transmission function.
Why Choose Our 2006-2010 G6 Transmission Module?
This isn’t just another replacement part; it’s a comprehensive solution. Built to strict OEM standards, this module ensures long-lasting durability and performance. By providing your VIN at checkout, we load the latest GM software specific to your car, which corrects many of the inherent factory issues and optimizes shift patterns for your exact vehicle configuration. This T42 TCM is a direct replacement for a wide range of part numbers, including 24252114, 24234503, 24230461, and YNXS, guaranteeing compatibility.
Simple, Straightforward Installation
For the Pontiac G6 models from 2006-2010, the TCM is conveniently located on the driver’s side, attached to the LH strut tower in the engine compartment. The replacement process can typically be completed in under 30 minutes with basic hand tools. Simply disconnect the vehicle’s battery, unplug the electrical connectors from the old module, unbolt it, and install the new one in its place. Once the new module is connected and the battery is reconnected, any persistent codes can be cleared with a standard OBD2 scan tool.
Frequently Asked Questions
What is VIN programming and why do I need it?
VIN programming is the process of loading your vehicle’s specific software and calibration files onto the transmission module. This ensures the TCM works perfectly with your G6’s engine, ABS, and other systems. Without it, the transmission may not shift correctly, or the vehicle may not start at all. Our service handles this for you, so the part is ready for installation upon arrival.
Do I need to visit a dealer after installing this part?
No. Because we pre-program the module to your VIN, you do not need to take your vehicle to a dealership or mechanic for additional programming. This saves you hundreds of dollars in labor and programming fees.
Where is the TCM located on a 2006-2010 Pontiac G6?
On the 2006-2010 Pontiac G6, the Transmission Control Module is located in the engine bay, mounted to the driver’s side (LH) strut tower. It’s an accessible location that makes for a quick and easy replacement.
Will this module fix a P0700 trouble code?
A P0700 code is a general fault code indicating the TCM has detected a problem and has requested the Check Engine Light to be turned on. While this module often resolves the root cause of a P0700, it’s essential to have the vehicle scanned for other transmission-specific codes (like solenoid or sensor codes) to confirm the TCM is the issue.
Is there a core charge for my old module?
No, we do not require a core charge. You can keep your old part, eliminating the hassle and expense of shipping it back.