Restore Smooth, Reliable Shifting to Your Pontiac G5
Is your 2007-2010 Pontiac G5 suffering from frustrating transmission problems? The jarring shifts, the hesitation between gears, or worse—getting stuck in limp mode—are more than just an annoyance; they’re a sign that your transmission’s brain is failing. The Transmission Control Module (TCM) is the critical component responsible for every gear change. When it malfunctions, it can mimic a catastrophic transmission failure, leading to costly and often unnecessary repair quotes. This VIN-programmed T42 TCM, part number 24255280, is the direct, reliable solution to get your car driving like new again.
A Technician’s Notebook: The Intermittent Shifting Ghost
I had a 2008 Cobalt (a cousin to the G5) in my bay that was driving the owner crazy. The car would shift perfectly for days, then suddenly start slamming into gear or refuse to shift past 2nd. They had already replaced two shift solenoids with no luck. After connecting my scan tool, I saw the classic P0700 code, but the solenoid codes were intermittent. Experience has taught me that when electrical gremlins appear random, the controller is often the culprit. We swapped in a VIN-programmed TCM, and the problem vanished instantly. It wasn’t a bad transmission; it was a faulty module sending bad commands. This is a fix I’ve performed hundreds of times on these GM platforms.
Why Choose a VIN-Programmed Module?
The single biggest hurdle in replacing a modern vehicle module is programming. In the past, you’d install the part and then have to get your car towed to a dealership for an expensive programming session. We eliminate that step entirely. By providing your vehicle’s VIN during checkout, we flash this 2007-2010 G5 Transmission Module with the latest GM software specific to your car. It arrives at your door ready for a true plug-and-play installation, saving you hundreds of dollars and significant downtime.
Is Your Pontiac G5 Showing These Telltale Signs?
- âś” Harsh, erratic, or delayed gear shifts.
- âś” Vehicle is stuck in one gear (often called “limp mode”).
- âś” Check Engine Light or Transmission Warning Light is illuminated.
- âś” Diagnostic Trouble Codes (DTCs) are present, especially P0700, P0750-series solenoid codes, or communication errors.
- âś” A sudden drop in fuel economy.
- âś” The transmission seems to slip out of gear.
- âś” Complete failure to shift up or down.
A Straightforward Guide to Your G5 TCM Installation
- 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 TCM: On your Pontiac G5, the Transmission Control Module is conveniently located in the engine bay, mounted directly on the driver’s side (LH) strut tower.
- âś” Disconnect and Remove: Carefully unplug the electrical connectors. Press the release tabs firmly. Then, unbolt the module from its mounting bracket.
- âś” Install the New Module: Bolt the new, pre-programmed TCM into place and securely reconnect the electrical harnesses. You should hear a click as they lock in.
- âś” Final Steps: Reconnect the battery terminal. Start the vehicle and allow it to idle for a few minutes. If you have a basic OBD2 scan tool, use it to clear any remaining fault codes from the system’s memory.
Verified Vehicle Compatibility List
This T42 TCM is a direct replacement for part number 24255280 and is interchangeable with many other GM service numbers. While this page focuses on the 2007-2010 G5 Transmission Module, it also fits a wide range of other vehicles. Please verify your specific model below or provide your VIN for guaranteed fitment.
Fits Models Including:
- Pontiac G5: 2007-2010 (LH strut tower)
- Chevrolet Cobalt: 2006-2010 (LH strut tower)
- Chevrolet HHR: 2006-2011 (LH engine compartment)
- Saturn Ion: 2006-2007 (Behind LH strut tower)
- GMC Sierra & Chevrolet Silverado: 2007-2013 (Next to battery)
- GMC Yukon & Chevrolet Tahoe: 2007-2009 (Next to battery)
- And many more GM cars, trucks, and SUVs from 2006-2014.
Frequently Asked Questions
What does “VIN-programmed” mean for me?
It means we flash the module with your car’s specific Vehicle Identification Number before shipping. This ensures it communicates perfectly with your car’s other computers right out of the box, eliminating the need for an expensive trip to the dealership for programming.
Can I install this myself?
Absolutely. For a Pontiac G5, the TCM is located on the driver’s side strut tower. With basic hand tools, most DIYers can complete the job in under 30 minutes. Just disconnect the battery first.
Will this clear my Check Engine Light and codes like P0700?
Yes, this module is designed to resolve the internal electronic faults that cause codes like P0700 (Transmission Control System Malfunction) and various solenoid codes. After installation, you may need to clear any stored codes with a basic scan tool.
What if I order the wrong part?
We guarantee fitment. Providing your VIN at checkout ensures we program the correct module for your vehicle. Our expert support team is also here to help you verify compatibility before you buy.
Is there a core charge?
No, there is no core charge. You can keep or dispose of your old module without the hassle of sending it back.