Is Your Pontiac G5 Shifting Erratically or Stuck in Gear?
A faulty Transmission Control Module (TCM) can turn your daily drive into a stressful, unpredictable experience. If you’re dealing with sudden harsh shifts, a car that won’t shift out of a low gear, or a persistent check engine light, you’re not just facing an annoyance—you’re facing a critical component failure. This VIN-programmed T42 Transmission Control Module is the definitive solution for your 2007-2010 Pontiac G5 Transmission Control Module, designed to restore the smooth, reliable performance you depend on without a costly trip to the dealership.
Common Symptoms & Your Solution
When the TCM begins to fail, your vehicle will let you know. Ignoring these signs can lead to more significant transmission damage. This module is the direct fix for issues including:
- Harsh, jerky, or delayed gear shifts
- Vehicle stuck in “limp mode” (usually 2nd or 3rd gear)
- Check Engine Light or Transmission Warning Light is on
- Diagnostic Trouble Codes (DTCs) like P0700, P0750, or other solenoid-related codes
- Failure to upshift or downshift properly
- A noticeable decrease in fuel economy
Our pre-programmed T42 TCM directly addresses these problems, ensuring your vehicle’s computer receives the correct signals for precise, factory-spec shifting.
Features & Benefits
- ✔ Plug-and-Play Installation: This module arrives pre-programmed to your Pontiac G5’s specific VIN. Simply install it, and you’re ready to go—no additional programming or dealership visits required.
- ✔ Restore Smooth Performance: By precisely managing shift points, torque converter lockup, and line pressure, this TCM eliminates erratic behavior and brings back the smooth operation you expect.
- ✔ Solve Annoying Warning Lights: Engineered to clear persistent transmission-related fault codes (like P0700) that are often triggered by a failing original module.
- ✔ OEM-Quality Engineering: Built to meet or exceed original equipment standards for durability and function, ensuring reliable performance for years to come. This is the correct 2007-2010 Pontiac G5 Transmission Control Module for a lasting repair.
- ✔ Warranty Protection: This unit is backed by our one-year replacement warranty.
Expert Insight: The ‘Limp Mode’ Lifesaver
When your G5 goes into “limp mode,” it’s a protective measure triggered by the onboard computer detecting a severe transmission fault. The goal is to prevent further damage by locking the transmission into a single gear. While it’s designed to help you get off the road safely, it’s also a clear signal that the TCM has failed. In the past, this meant a tow to the dealer for diagnosis and expensive programming. Our VIN-programmed module changes the game, allowing you or your mechanic to perform the replacement quickly, erasing the fault, and restoring full function in under an hour.
Frequently Asked Questions
Will this TCM fit my 2008 Pontiac G5?
Yes, this Transmission Control Module is a direct-fit replacement for all 2007, 2008, 2009, and 2010 Pontiac G5 models equipped with an automatic transmission. It is also compatible with a wide range of other GM vehicles from that era.
What does “VIN Programmed” actually mean?
“VIN Programmed” means we load the module with the latest GM software that is specific to your vehicle’s unique Vehicle Identification Number (VIN). This ensures it communicates perfectly with your car’s engine computer and other systems right out of the box, eliminating the need for expensive dealership tools.
Is this difficult to install myself?
For someone with basic mechanical skills, the installation is straightforward. On the Pontiac G5, the TCM is typically located on the driver’s side strut tower. The process involves disconnecting the battery, unplugging the electrical connectors, unbolting the old module, and installing the new one. Most installations take under 30 minutes.
Do I need to return my old part?
No, there is no core charge for this part. You can keep or dispose of your old module without the hassle of returning it, saving you time and money on shipping.
What happens if I don’t replace a failing TCM?
Continuing to drive with a faulty TCM can cause excessive wear and tear on your transmission’s mechanical parts due to harsh shifting and improper fluid pressure. This can lead to much more expensive internal transmission damage over time. Replacing the 2007-2010 Pontiac G5 Transmission Control Module promptly is a smart preventative measure.