Is your 2007-2010 Pontiac G5 experiencing frustrating transmission problems like harsh, erratic shifting, getting stuck in gear, or a persistent check engine light? These are classic signs of a failing Transmission Control Module (TCM). The TCM is the electronic brain of your automatic transmission, responsible for managing shift points, torque converter clutch engagement, and fluid pressure. When it fails, it can disrupt your vehicle’s performance and drivability, leaving you with an unreliable and inefficient car.
This OEM-quality T42 Transmission Control Module is the definitive solution to restore your vehicle’s transmission to its original, smooth-operating condition. Specifically designed as a direct replacement, it eliminates the guesswork and high costs associated with dealership repairs. We take care of the most critical step: programming the module to your vehicle’s specific VIN before it ships. This ensures a seamless, plug-and-play installation without the need for additional programming or expensive scan tools.
Why Choose a VIN-Programmed 2007-2010 G5 Transmission Module?
A generic, unprogrammed module won’t work correctly in your Pontiac G5. Modern vehicles rely on precise software that communicates between the engine, transmission, and other systems. Our VIN programming service installs the latest GM-certified software specific to your vehicle, ensuring that all transmission parameters, shift strategies, and diagnostic functions operate exactly as the manufacturer intended. This pre-programming resolves common diagnostic trouble codes (DTCs) right out of the box and is essential for optimal performance and fuel economy. Don’t settle for a part that requires a trip to the dealer; our 2007-2010 G5 Transmission Module arrives ready for immediate installation.
From the Diagnostic Bay
We recently had a 2008 G5 come into the shop stuck in third gear, a common ‘limp mode’ symptom. The owner had already replaced two shift solenoids based on the DTC codes, but the problem persisted. A quick data scan showed intermittent communication errors with the TCM. Instead of continuing to chase component-level symptoms, we identified the root cause. After installing one of our pre-programmed T42 modules, all codes cleared instantly, and the car shifted perfectly on the first test drive. It’s a classic case where the issue isn’t the solenoid itself, but the module that controls it.
Common Symptoms of a Failing G5 TCM
- ✔ Harsh, slamming, or erratic gear shifts.
- ✔ Delayed engagement when shifting from Park to Drive or Reverse.
- ✔ Vehicle gets stuck in a single gear (limp mode), often 2nd or 3rd.
- ✔ Check Engine Light or Transmission Warning Light is illuminated.
- ✔ Diagnostic trouble codes such as P0700, P0750, or other solenoid-related faults.
- ✔ Poor fuel efficiency and a feeling of sluggish acceleration.
- ✔ Complete loss of shifting capability or intermittent transmission failure.
Replacing your faulty TCM with our reliable unit will not only solve these issues but also prevent potential long-term damage to your transmission’s mechanical components. Located conveniently at the LH strut tower on the Pontiac G5, installation is straightforward for any competent DIY mechanic or professional technician. Simply disconnect the battery, swap the modules, reconnect the battery, and clear any remaining codes with a basic scan tool.
This module is also a direct replacement for a wide range of other GM vehicles utilizing the T42 controller and 4-speed automatic transmissions like the 4L60E, 4L65E, and 4L70E. It interchanges with part numbers including 24252114, 24234503, 24242391, and many more, making it a versatile solution for your repair needs.
Frequently Asked Questions
What does a VIN-programmed TCM mean?
It means we flash the module with the specific software and calibration files for your vehicle using your VIN. This makes the part plug-and-play, allowing it to communicate correctly with your car’s other computers without requiring a trip to the dealership for expensive programming.
Will this fit other GM vehicles besides the Pontiac G5?
Yes, this T42 TCM is compatible with a wide array of 2006-2014 GM vehicles, including models from Chevrolet, GMC, Buick, Saturn, and more. Please check the detailed fitment list on this page to confirm compatibility with your specific year, make, and model.
Do I need special tools to install this 2007-2010 G5 Transmission Module?
No special tools are required. Basic hand tools to access the module (typically located on the LH strut tower in a G5) and disconnect the electrical connectors are all that’s needed. We do recommend having a basic OBD2 scan tool to clear any stored codes after installation.
What happens if I don’t replace a failing TCM?
Continuing to drive with a faulty TCM can lead to poor fuel economy, unpredictable shifting, and could leave you stranded. More importantly, it can cause excessive wear and tear on the mechanical parts of your transmission, potentially leading to a much more expensive repair down the road.
Is there a core charge for this part?
No, there is no core charge. You can keep your old module without the hassle of returning it, saving you time and money.