Restore Your Pontiac G6’s Shifting Performance
If your 2006-2010 Pontiac G6 is suffering from erratic shifting, getting stuck in gear, or has an illuminated check engine light, a failing Transmission Control Module (TCM) is the most likely cause. As the central computer for your automatic transmission, the TCM is responsible for every gear change, torque converter lockup, and pressure regulation. When it malfunctions, it can cripple your vehicle’s drivability and leave you stranded. This OEM-quality T42 TCM, part number 24240400, is the definitive solution, arriving pre-programmed to your vehicle’s VIN for a hassle-free, plug-and-play installation.
From the Diagnostic Bay
We recently had a 2008 Pontiac G6 come into the shop that was stuck in 3rd gear (limp mode) with a P0700 code. The owner had already replaced two shift solenoids with no success. After a quick scan, we confirmed communication with the TCM was intermittent. Instead of a costly internal transmission repair, we installed one of our VIN-programmed T42 modules. The entire job took less than 30 minutes, and after clearing the codes, the car shifted perfectly on the test drive. This simple replacement saved the customer hundreds of dollars and significant downtime compared to a dealership visit.
Symptoms of a Failing Pontiac G6 TCM
A faulty transmission module can manifest in several ways. If you’re noticing any of the following issues, it’s a strong indicator that your TCM needs replacement. Ignoring these signs can lead to more severe transmission damage over time.
- ✔ Harsh or Delayed Shifting: Experiencing hard clunks when the transmission shifts, or a noticeable delay when shifting from park to drive or reverse.
- ✔ Stuck in Limp Mode: The vehicle refuses to shift out of a single gear (usually 2nd or 3rd) to protect the transmission from further damage.
- ✔ Warning Lights: The Check Engine Light or a dedicated transmission warning light is illuminated on your dashboard.
- ✔ Diagnostic Trouble Codes (DTCs): Common codes associated with a bad TCM include P0700 (Transmission Control System Malfunction), P0750-P0758 (Shift Solenoid Errors), and other communication-related faults.
- ✔ Poor Fuel Economy: Inefficient shifting and torque converter operation can lead to a sudden drop in your vehicle’s gas mileage.
- ✔ No Upshift or Downshift: The transmission fails to shift to higher or lower gears as you accelerate or decelerate.
The Plug-and-Play Advantage: VIN Programming Included
Don’t waste time and money at the dealership. This module is not a generic, off-the-shelf part. We program it specifically to your vehicle’s unique Vehicle Identification Number (VIN) before it ships. This critical step ensures that the module communicates flawlessly with your vehicle’s other computers, like the Engine Control Module (ECM), right out of the box. It’s flashed with the latest GM software updates to provide optimal shift patterns, fuel efficiency, and long-term reliability. This is the most effective way to solve electronic transmission issues and get your Pontiac G6 TCM functioning correctly again.
This T42 TCM is a direct replacement for a wide range of GM vehicles equipped with 4-speed automatic transmissions like the 4L60E, 4L65E, and 4L70E. It is interchangeable with numerous service numbers, including 24252114, 24234503, 24230461, 24240400, and more, making it a versatile solution for many cars, trucks, and SUVs.
Frequently Asked Questions
What does “VIN Programmed” actually mean?
VIN programming means we load your vehicle’s specific factory software and calibration files onto the module before we ship it to you. This makes the module a true plug-and-play part, as it will be immediately recognized by your car’s computer systems without requiring any additional setup or expensive tools from a dealership.
Do I need to take my car to a mechanic after installing this part?
No. Because the unit comes pre-programmed, you do not need to visit a dealer or mechanic for programming. The installation is straightforward for a DIYer with basic tools. After installation, we recommend using a basic OBD2 scanner to clear any stored trouble codes from the vehicle’s memory.
Where is the TCM located on my 2006-2010 Pontiac G6?
On the Pontiac G6, the Transmission Control Module is typically found in the engine bay, mounted to the driver’s side (LH) strut tower. It’s an easily accessible location that makes replacement a quick job.
Will this TCM fix my P0700 trouble code?
A P0700 code is a general fault code indicating the TCM has detected a problem. While this module often resolves the root cause that triggers a P0700, it’s essential to diagnose any other accompanying codes (like solenoid codes) to confirm the TCM is the primary point of failure. In most cases where shifting issues are present, replacing the TCM is the correct fix.
Is there a core charge for my old part?
No, we do not require a core charge. You can keep your old part, which saves you the time, money, and hassle of shipping it back.