Restore Smooth Shifting to Your Pontiac G5
Is your 2007-2010 Pontiac G5 suffering from harsh, erratic shifting, or getting stuck in limp mode? You’re not alone. The Transmission Control Module (TCM) is a frequent point of failure, leading to frustrating drivability issues and a persistent check engine light. This replacement T42 TCM, part number 24235340, is the definitive solution. As a seasoned technician, I’ve seen these exact symptoms hundreds of times on GM compacts like the G5 and Cobalt. The root cause is often the module’s location on the driver-side strut tower, where it’s exposed to constant vibration and engine bay heat, eventually causing internal electronic failure.
This isn’t just a replacement part; it’s a complete, ready-to-install solution. We handle the most critical step for you: VIN programming. By programming the module to your specific vehicle before it ships, we eliminate the need for expensive dealership calibration. You get a part that communicates perfectly with your vehicle’s powertrain right out of the box, restoring the precise, factory-new shifting you’ve been missing. This is the most reliable way to solve those nagging transmission problems and turn off that check engine light for good.
A Technician’s Notebook: The Intermittent Shifting Nightmare
A customer brought in their 2009 Pontiac G5 with a classic complaint: “Sometimes it shifts so hard it feels like I’ve been rear-ended, and other times it seems fine.” They also had a Check Engine Light with a P0700 (Transmission Control System Malfunction) code. Intermittent issues are the hardest to diagnose, but with these GM platforms, my first suspect is always the TCM. After confirming power and ground were good, we swapped in one of our pre-programmed modules. The test drive was perfect—smooth upshifts, crisp downshifts, and no more violent lurching. The VIN programming ensured the new TCM understood all the vehicle’s specific parameters, making it a 30-minute repair that solved a month-long headache for the owner.
Is Your Pontiac G5 Showing These Transmission Warning Signs?
- ✔ Harsh, banging, or delayed gear shifts.
- ✔ Vehicle is stuck in one gear (often 2nd or 3rd, known as “limp mode”).
- ✔ Check Engine Light or Transmission Warning Light is illuminated.
- ✔ Diagnostic Trouble Codes (DTCs) are present, such as P0700, P0750, P0753, P0758, or other solenoid-related faults.
- ✔ Inconsistent or complete loss of upshifting or downshifting.
- ✔ Poor fuel economy and a feeling of sluggish performance.
DIY-Friendly Installation: Get Your G5 Shifting Smoothly in Minutes
Replacing the TCM on your Pontiac G5 is a straightforward job that most DIY mechanics can complete in under 30 minutes with basic hand tools. No complex procedures or special equipment are required.
- Safety First: Disconnect the negative terminal from your vehicle’s battery to prevent any electrical shorts and help reset the system.
- Locate the Module: On the 2007-2010 Pontiac G5, the TCM is conveniently located in the engine bay, mounted directly to the driver-side (LH) strut tower.
- Disconnect and Remove: Carefully unplug the electrical connectors from the old module. Then, unbolt the module from its mounting bracket.
- Install the New Module: Bolt the new, pre-programmed TCM into place and securely reconnect the electrical harnesses. Ensure they click into place.
- Final Steps: Reconnect the battery terminal. While our programming resolves most codes, it’s good practice to use a basic OBD2 scanner to clear any stored DTCs from the vehicle’s memory. Start the car and enjoy smooth shifting!
Verified Fitment for Your General Motors Vehicle
This T42 TCM is a direct replacement for part number 24235340 and other service numbers. It is compatible with a wide range of GM vehicles. While this listing is focused on the Pontiac G5, please verify your specific model 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)
- Saturn Ion (2006-2007): Transmission; (behind LH strut tower)
- Pontiac G6 (2006-2010): Transmission; (LH strut tower)
- Chevrolet Malibu (2006-2010): Transmission; (LH frame rail)
- … and many other GM cars, trucks, and SUVs from 2006-2014. See full fitment list for details.
Frequently Asked Questions
What does a “VIN-Programmed” TCM mean for me?
It means the module arrives ready for installation. We load your car’s specific Vehicle Identification Number (VIN) and the latest GM software onto the module before shipping. This ensures it works perfectly with your engine and transmission, saving you a trip to the dealership and avoiding hundreds of dollars in programming fees.
Is this difficult to install on my 2008 Pontiac G5?
Not at all. The installation is one of the easier electronic repairs. The TCM is easily accessible on the driver-side strut tower in the engine bay. With basic tools, most people can swap it out in under 30 minutes.
Will this part fix a P0700 trouble code?
Yes. The P0700 code is a general fault code indicating the TCM has detected a problem. In many cases, replacing a failing TCM with our programmed unit will resolve the underlying issue causing the P0700 and related transmission codes.
Do I need to send my old part back?
No. We do not require a core return for this part. You can keep your old module or dispose of it, making the process simple and hassle-free.
How do I know this is the correct part for my car?
This module, part number 24235340, is the correct fit for the 2007-2010 Pontiac G5. You can also match the part number on your existing module to the ones listed in our compatibility chart to be 100% certain. When you provide your VIN at checkout, we perform a final verification.