Restore Flawless Shifting in Your GM Vehicle
Is your Pontiac G5, Chevrolet Cobalt, or another GM vehicle suffering from erratic shifting, getting stuck in gear, or displaying transmission-related error codes? A failing Transmission Control Module (TCM) is often the culprit behind these frustrating and potentially damaging issues. This genuine quality T42 TCM, service part number 24239224, is the definitive solution to restore your vehicle’s transmission performance. It arrives expertly programmed to your specific Vehicle Identification Number (VIN), ensuring a seamless, plug-and-play installation without any need for expensive dealership visits or special tools.
From the Diagnostic Bay
We had a 2008 Chevy Silverado in the shop with a classic case of “transmission confusion.” The driver reported it would occasionally slam into gear from a stop, and sometimes it would refuse to shift out of 3rd on the highway. We scanned it and got a P0700 code, which is a general transmission fault, along with some intermittent solenoid circuit codes. Instead of jumping straight to a costly transmission rebuild, we checked the TCM. After swapping in a VIN-programmed T42 module like this one, the truck’s shifting became crisp and predictable. The owner was thrilled to have his truck back on the road for a fraction of the cost of a new transmission—a perfect example of how replacing this single electronic component can solve what seems like a major mechanical failure.
Diagnosing Your 2007-2010 G5 Transmission Module
The TCM is the brain of your automatic transmission, responsible for managing shift points, torque converter lockup, and line pressure. When it begins to fail, it can manifest in a variety of ways that disrupt your driving experience. If you’re noticing these symptoms, it’s a strong indicator that your TCM needs attention.
Common Symptoms of a Faulty T42 TCM
- ✔ Erratic and Harsh Shifting: Your vehicle may slam into gear, hesitate between shifts, or shift at incorrect RPMs.
- ✔ Stuck in Limp Mode: The transmission may default to a single gear (often 2nd or 3rd) to prevent further damage, severely limiting vehicle speed.
- ✔ Check Engine Light: The dreaded check engine light or a dedicated transmission warning light will illuminate, often with Diagnostic Trouble Codes (DTCs) like P0700, P0750, P0753, or other solenoid-specific codes.
- ✔ Delayed Engagement: A noticeable delay when shifting from Park into Drive or Reverse.
- ✔ Poor Fuel Economy: Inefficient shifting and torque converter operation can lead to a significant drop in gas mileage.
- ✔ No Communication: In severe cases, a scan tool may be unable to communicate with the TCM, indicating a complete module failure.
Replacing your faulty unit with our pre-programmed 2007-2010 G5 Transmission Module is the most effective way to eliminate these issues and restore the smooth, reliable operation you expect from your vehicle. This module is a direct replacement for a wide array of GM cars, trucks, and SUVs equipped with 4-speed automatic transmissions like the 4L60E, 4L65E, and 4L70E.
Installation and Compatibility
Installation is a straightforward process that can typically be completed in under 30 minutes with basic hand tools. The TCM is located in the engine compartment—common locations include the LH strut tower (as in the Pontiac G5 and Cobalt), next to the battery, or under the air cleaner box, depending on your specific model. Simply disconnect the battery, unplug the electrical connectors from the old module, unbolt it, and install the new one in its place. Once the new module is installed and the battery is reconnected, the vehicle is ready to go. We recommend clearing any stored DTCs with a scan tool after installation.
This module is interchangeable with a host of part numbers, including 24252114, 24234503, 24239224, 24256960, and more, making it a versatile solution for countless GM vehicles from 2006 to 2014. From a workhorse GMC Sierra to a family-hauling Chevrolet Tahoe or a daily-driving Buick LaCrosse, this part ensures OEM-level function and reliability.
Frequently Asked Questions
Will this part require programming at the dealership?
No. This Transmission Control Module comes pre-programmed to your vehicle’s specific VIN. This means it is ready for installation right out of the box, saving you time and the high cost of dealership programming.
Where is the TCM located on my 2008 Pontiac G5?
On the 2007-2010 Pontiac G5, the TCM is typically located on the driver’s side of the engine bay, mounted to the LH strut tower. Always confirm the location on your specific vehicle before beginning the replacement process.
Is this a new or used part?
This is a high-quality, OEM-standard component that has been thoroughly inspected and prepared to meet or exceed original factory specifications. It is backed by our one-year warranty for your peace of mind.
What happens if I continue driving with a bad TCM?
Continuing to drive with a faulty TCM can lead to more severe transmission damage. Poor shifting can cause excessive wear on clutches and bands, and incorrect line pressure can lead to overheating. This can eventually result in a complete transmission failure, which is a much more expensive repair.
How do I provide my VIN for programming?
You will be prompted to enter your vehicle’s 17-digit VIN during the checkout process. Our technicians use this number to load the correct software and calibrations for your exact vehicle configuration.