If your 2007-2010 Pontiac G5 is struggling with harsh shifts, getting stuck in gear, or throwing transmission codes, you’re not just dealing with an annoyance—you’re facing a common failure point: the Transmission Control Module (TCM). As a technician with over two decades of experience, I’ve seen countless GM vehicles sidelined by faulty TCMs. The communication breakdown between the engine and transmission leads to poor performance, decreased fuel economy, and can even cause permanent transmission damage if ignored.
This isn’t a problem you have to live with or pay exorbitant dealership fees to fix. We’re offering a reliable, direct-fit T42 Transmission Control Module, part number 24235754, that arrives at your door pre-programmed to your vehicle’s specific VIN. This means no expensive trips for programming; it’s a true plug-and-play solution designed to get your G5 back to the smooth, responsive driving experience you expect. This module is the brain of your automatic transmission, precisely managing shift points, torque converter clutch engagement, and line pressure to restore factory performance.
A Technician’s Notebook
I recently had a 2008 Pontiac G5 in my bay with a classic, frustrating complaint. The owner said it would drive fine for days, then suddenly refuse to shift out of 2nd gear, triggering the check engine light. A quick scan showed a P0700 (Transmission Control System Malfunction) and an intermittent solenoid code. After checking the wiring and solenoids, which tested fine, I knew the culprit was the TCM. These modules, especially the T42 generation, are known for internal circuit failures caused by years of heat cycles and vibration. We installed one of our VIN-programmed modules, and the fix was immediate. The car shifted perfectly on the test drive, and the customer was thrilled to have a reliable car again without the dealership’s multi-day wait and high labor costs. This is the exact solution for that kind of problem.
Is Your Pontiac G5 Showing These Telltale Signs?
- ✔ Unpredictable, harsh, or delayed gear shifts that make driving uncomfortable.
- ✔ The vehicle enters “limp mode,” often stuck in 2nd or 3rd gear, with limited power.
- ✔ Check Engine Light or Transmission Warning Light is illuminated on your dash.
- ✔ Your scanner pulls Diagnostic Trouble Codes (DTCs) like P0700, P0750-P0758, or other solenoid-related faults.
- ✔ A noticeable drop in fuel efficiency as the transmission isn’t operating in the optimal gear.
- ✔ Complete failure to shift, either up or down, or a loss of communication with the module.
DIY-Friendly Installation: Get Your G5 Shifting Smoothly
Replacing the 2007-2010 G5 Transmission Module is a straightforward job that most DIYers can complete in under 30 minutes with basic hand tools. On the Pontiac G5, it’s conveniently located on the driver’s side strut tower.
- Safety First: Always disconnect the negative terminal from your vehicle’s battery before starting any electrical work. This prevents short circuits and helps reset the vehicle’s systems.
- Locate the Module: Open the hood and find the TCM mounted to the driver’s side (LH) strut tower in the engine bay.
- Disconnect and Remove: Carefully unplug the electrical connectors. Note the locking tabs to avoid damage. Then, unbolt the module from its mounting bracket and remove it from the vehicle.
- Install the New Module: Mount your new, pre-programmed TCM in the same location, secure the bolts, and firmly reconnect the electrical harnesses until they click into place.
- Final Steps: Reconnect the battery terminal. While the module is plug-and-play, it’s best practice to use a standard OBD2 scan tool to clear any stored fault codes from the previous failure. Start the car and enjoy smooth shifting!
Verified Fitment For Your Vehicle
This T42 TCM is a direct replacement for part number 24235754 and other interchangeable numbers. While this page focuses on the 2007-2010 G5 Transmission Module, it is also compatible with a wide array of GM vehicles. Please verify your 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)
- Chevrolet Impala (2006-2011): Transmission; (lower air cleaner housing)
- Chevrolet Silverado 1500 (2007-2013): Transmission; (next to battery)
- GMC Sierra 1500 (2007-2013): Transmission; (next to battery)
- Saturn Vue (2007-2010): Transmission; (LH front engine compartment)
- …and many more GM cars, trucks, and SUVs from 2006-2014. Please check the full list or contact us to confirm your vehicle.
Frequently Asked Questions
Do I need to take this module to a dealer for programming?
No. This is the biggest benefit of our service. We program the module to your vehicle’s VIN before shipping it. It arrives ready for a plug-and-play installation, saving you time and money.
What tools are required for installation on a Pontiac G5?
You’ll typically only need a basic socket set to remove the mounting bolts and a flathead screwdriver to help release the connector tabs. The entire process should take less than 30 minutes.
Will this fix a P0700 trouble code?
A P0700 code is a generic fault code indicating the TCM has detected a problem. Often, the root cause is the TCM itself. Replacing a faulty module with this pre-programmed unit will resolve the issue and allow you to clear the code permanently.
Is there a core charge for my old part?
No, there is no core charge. You are not required to send your old, faulty module back to us, which simplifies the repair process for you.
What if I have a different part number on my original module?
This module replaces a wide range of T42 TCM part numbers. Please check our compatibility list or contact our expert support team with your original part number to confirm an exact match.