Is Your Pontiac G5 Shifting Erratically?
If your 2007-2010 Pontiac G5 is suffering from harsh shifting, delayed gear engagement, or has a check engine light with transmission-related codes, a failing Transmission Control Module (TCM) is the most likely culprit. The TCM is the electronic brain of your automatic transmission, responsible for orchestrating every shift with precision. When it begins to fail, it can cause a wide range of drivability issues, from poor fuel economy to getting stuck in ‘limp mode.’ This replacement GM T42 TCM is the definitive solution to restore your vehicle’s transmission performance and reliability.
From the Diagnostic Bay
We had a 2008 Pontiac G5 come into the shop that the owner was convinced needed a full transmission rebuild. It was banging into gear and sometimes wouldn’t shift past 2nd. A quick scan pulled a P0700 code and a few solenoid circuit faults. Instead of jumping to the worst-case scenario, we inspected the TCM. After swapping in a VIN-programmed module like this one, the car shifted like it just rolled off the factory floor. It’s a powerful reminder that what seems like a catastrophic mechanical failure is often an electronic one, saving the owner thousands in unnecessary repairs.
The Plug-and-Play Solution for Your Pontiac G5 TCM
Forget expensive dealership visits and complex programming procedures. This T42 module arrives at your door pre-programmed to your vehicle’s specific Vehicle Identification Number (VIN). This critical step ensures that the module communicates flawlessly with your G5’s Engine Control Module (ECM) and other onboard systems right out of the box. We load the latest GM software updates, which often correct factory flaws and improve transmission logic for smoother, more efficient operation. This is a true plug-and-play repair that you can perform in your own driveway.
Common Symptoms of a Faulty TCM
- ✔ Harsh, erratic, or delayed gear shifts that disrupt your driving experience.
- ✔ The vehicle gets stuck in a single gear (often called limp mode) to protect the transmission.
- ✔ An illuminated Check Engine Light or Transmission Warning Light on your dashboard.
- ✔ Diagnostic Trouble Codes (DTCs) such as P0700, P0750, or other solenoid-specific codes.
- ✔ A noticeable decrease in fuel efficiency as the transmission operates incorrectly.
- ✔ Complete failure to shift, leaving you stranded.
- ✔ Intermittent loss of communication with the scan tool or other modules.
Engineered for Lasting Reliability
This module is built to meet or exceed original equipment standards, providing a dependable and long-lasting repair. It directly replaces a wide range of original part numbers, including 24252114, 24234503, 24230461, and YNXS, making it a versatile solution for many GM vehicles equipped with 4-speed automatic transmissions like the 4L60E and 4L65E. For the Pontiac G5 (2007-2010), the TCM is typically located on the driver’s side strut tower, making access straightforward. Simply disconnect the battery, unbolt the old module, disconnect the wiring harnesses, and install the new one in its place. Once the battery is reconnected, your vehicle’s shifting problems will be a thing of the past.
Frequently Asked Questions
What does VIN programming mean for me?
VIN programming means we flash the module with your car’s specific software from GM before we ship it. This makes the unit ready for installation without any need for expensive dealer tools or additional programming, saving you time and money.
Do I need to take this part to a dealer after installation?
No. Because the module is pre-programmed to your VIN, it is a plug-and-play installation. You will not need to visit a dealership or repair shop for further programming.
Where is the TCM located on a 2007-2010 Pontiac G5?
On the Pontiac G5, the Transmission Control Module is typically found in the engine bay, mounted to the driver’s side (LH) strut tower for easy access.
Will this fix a P0700 trouble code?
A P0700 code is a general transmission fault request from the TCM to the ECM to turn on the check engine light. While a failing TCM is a very common cause for this code, it’s important to scan for other transmission-specific codes (like P07xx) to confirm the diagnosis. In many cases, replacing the TCM will resolve the root cause of the P0700 code.
Is a core charge required for this part?
No, there is no core charge for this module. You can keep your old part without any hassle or need to return it.