Restore Smooth Shifting to Your Pontiac G5
If you’re dealing with the headache of a transmission that won’t shift correctly, slams into gear, or has your Pontiac G5 stuck in limp mode, you’ve come to the right place. As a technician with over two decades of experience, I’ve seen countless drivers frustrated by these exact issues. The problem often isn’t the transmission itself, but its electronic brain: the Transmission Control Module (TCM). This replacement T42 TCM, part number 24240400, is the definitive solution for your 2007-2010 Pontiac G5, arriving pre-programmed to your vehicle’s specific VIN for a true plug-and-play repair.
Is Your Pontiac G5 Exhibiting These Telltale Signs?
- âś” Unpredictable, harsh, or delayed gear shifts that make driving a chore.
- âś” The vehicle is stuck in a single gear (limp mode), severely limiting speed and performance.
- âś” Your dashboard is lit up with a Check Engine Light or transmission warning, showing codes like P0700, P0750, or other solenoid-related faults.
- âś” A noticeable drop in fuel economy or a transmission that seems to be running hotter than usual.
- âś” Complete failure to shift up or down, or intermittent communication loss with the module.
From the Diagnostic Bay: Solving the “Limp Mode” Mystery
A customer brought in their 2008 Pontiac G5, explaining it would randomly refuse to shift past 2nd gear. They had already replaced a shift solenoid with no luck. After connecting my scan tool, I saw the dreaded P0700 (Transmission Control System Malfunction) code, a general fault that points to the TCM. Instead of a costly diagnostic rabbit hole, we focused on the module. Heat and vibrations, especially on these models where the TCM is mounted on the strut tower, cause internal solder joints to fail over time. We installed one of our VIN-programmed modules, and in less than an hour, the car was shifting perfectly. It’s a common failure I’ve diagnosed hundreds of times, and a reliable replacement TCM is the correct fix.
The Critical Solution: A Pre-Programmed 2007-2010 G5 Transmission Module
The transmission in your car relies on this module for everything from executing smooth gear changes to managing torque converter lockup for optimal fuel efficiency. When it fails, the entire system is compromised. Our process eliminates the guesswork and extra expense. We take your vehicle’s VIN and flash this module with the latest GM software, ensuring it communicates flawlessly with your car’s engine computer and other systems right out of the box. There’s no need for an expensive trip to the dealership for programming—a step that can often cost hundreds of dollars on its own.
DIY-Friendly Installation: A 30-Minute Fix
- âś” Safety First: Disconnect the negative terminal from your car’s battery to prevent any electrical shorts and to help reset the vehicle’s computer systems.
- âś” Locate the Module: On your Pontiac G5, the TCM is conveniently located on the driver’s side (LH) strut tower in the engine bay. It’s a silver box with electrical connectors.
- âś” Disconnect and Remove: Carefully unplug the electrical harnesses. Then, unbolt the module from its mounting bracket. Keep the hardware safe.
- âś” Install the New Module: Mount your new, pre-programmed TCM in the same location and securely fasten it. Reconnect the electrical harnesses, ensuring they click into place.
- âś” Final Steps: Reconnect the battery terminal. While the system may reset, it’s best practice to use a basic OBD2 scan tool to clear any stored diagnostic trouble codes (DTCs) from the vehicle’s memory.
Verified Vehicle Compatibility List
While this is the correct part for the 2007-2010 Pontiac G5, this versatile T42 module also fits a wide range of other General Motors vehicles. This part is interchangeable with service numbers including 24252114, 24234503, 24230461, 24234274, 24239224, and more. Please verify your specific model and location below:
- Pontiac G5 (2007-2010): Transmission; (LH strut tower)
- Chevrolet Cobalt (2006-2010): Transmission; (LH strut tower)
- Chevrolet HHR (2006-2011): Transmission; (LH engine compartment)
- Saturn Ion (2006-2007): Transmission; (behind LH strut tower)
- Chevrolet Silverado / GMC Sierra 1500 (2007-2013): Transmission; (next to battery)
- Chevrolet Tahoe / GMC Yukon (2007-2009): Transmission; (next to battery)
- Chevrolet Impala (2006-2011): Transmission; (lower air cleaner housing)
- And many more GM models from 2006-2014.
Do I need to have this module programmed by a dealer?
Do I need to have this module programmed by a dealer?
No. The biggest benefit of our service is that this 2007-2010 G5 Transmission Module arrives fully programmed to your car’s VIN. This makes it a direct-fit, plug-and-play solution, saving you the time and expense of a dealership visit.
Is this a difficult part for a DIY mechanic to install?
Not at all. For a Pontiac G5, the installation is very straightforward. The module is easily accessible on the driver’s side strut tower. With basic hand tools, the entire job can typically be completed in under 30 minutes, making it an excellent DIY repair.
What happens if I install this and still have problems?
While this module fixes the most common causes of shifting issues, we stand by our products. This part is backed by a one-year warranty. If you encounter any issues, our expert support team is here to help you diagnose the problem and ensure you get the right solution.
Is there a core charge for my old part?
No, there is no core charge required. You can keep your old part without the hassle of returning it, simplifying the repair process for you.