Is Your Pontiac G6 Shifting Erratically?
If you’re dealing with the frustration of a Pontiac G6 that slams into gear, refuses to shift, or has the check engine light glaring at you, the problem is very likely a failing Transmission Control Module (TCM). As the electronic brain of your automatic transmission, the TCM is responsible for every gear change. When it fails, it can make your daily drive unpredictable and stressful. In my 20+ years as a technician, I’ve seen these T42 modules cause countless headaches, but the fix is more straightforward than you might think.
Expert Pro Tip: Check Before You Replace
Before you condemn your TCM, take 5 minutes to inspect the main electrical connector on the module. On the G6, it’s right at the driver-side strut tower. Unplug it and look for any green or white crusty corrosion on the pins or moisture inside the connector. A poor connection can mimic all the symptoms of a bad module. Cleaning it with a contact cleaner might just solve your problem. If the connector is clean and the problems persist, the module itself is the next logical step.
Common Symptoms of a Failing G6 TCM
A faulty TCM can manifest in several ways. If you’re experiencing any of the following, this part is your solution:
- ✔ Harsh, delayed, or erratic shifting between gears.
- ✔ The vehicle is stuck in one gear (often called “limp mode”).
- ✔ Check Engine Light is on with transmission-related codes like P0700 or P0750.
- ✔ Complete loss of forward or reverse gears intermittently.
- ✔ Poor acceleration and decreased fuel economy.
The Plug-and-Play Solution: A Pre-Programmed 2006-2010 G6 Transmission Control Module
Forget expensive dealership visits and programming fees. We take the hassle out of the repair by programming this module to your vehicle’s specific VIN before it ships. This ensures it communicates perfectly with your car’s engine computer and other systems right out of the box. It arrives loaded with the latest GM software updates to correct factory flaws and provide the most reliable performance possible.
Simple Installation: Get Back on the Road in Under 30 Minutes
- Safety First: Disconnect the negative terminal from your car’s battery to prevent any electrical shorts.
- Locate the Module: On your Pontiac G6, the TCM is conveniently located in the engine bay, mounted to the driver-side (LH) strut tower.
- Swap the Part: Unplug the electrical connectors and unbolt the old module. Bolt the new one in its place and securely reconnect the plugs.
- Final Steps: Reconnect the battery terminal. The system will be reset, but it’s always a good practice to use a basic scan tool to clear any stored fault codes.
OEM-Quality and Guaranteed Fitment
This module is built to meet or exceed original equipment standards for a long service life. It is a direct replacement for a wide range of part numbers, including 24235340, 24252114, 24234503, and many others, ensuring broad compatibility across the GM lineup. Backed by our one-year warranty, you can purchase with confidence, knowing you’re getting a reliable part that solves the problem for good. No core charge means you don’t have to worry about sending the old part back. Order today and restore the smooth, dependable performance your Pontiac G6 was built for.