End Frustrating Transmission Problems in Your Pontiac G6
If you’re dealing with a 2006-2010 Pontiac G6 that’s shifting harshly, getting stuck in gear, or throwing transmission codes, you know how disruptive it can be. As a technician with over two decades of experience, I’ve seen countless drivers frustrated by these exact symptoms. The culprit is often a failing Transmission Control Module (TCM), the electronic brain of your automatic transmission. This T42 TCM, part number 24235754, is the definitive solution, arriving pre-programmed to your vehicle’s VIN for a hassle-free, plug-and-play installation.
Your vehicle’s TCM is responsible for managing every aspect of shifting—from gear selection and timing to torque converter clutch engagement. When it fails due to heat cycles and electronic wear, the result is poor performance, decreased fuel economy, and the dreaded check engine light. Our replacement module restores the precise communication needed for your transmission to operate as it did from the factory, eliminating the guesswork and costly diagnostic fees associated with intermittent electronic issues.
Case Study: A Tricky Diagnosis
A customer brought in a 2009 G6 with classic limp-mode symptoms—stuck in 3rd gear with a P0700 code. They had already replaced two shift solenoids based on a generic code reader’s suggestion, with no improvement. After a quick data stream analysis, I saw erratic command signals from the TCM. The internal processor was failing, sending junk data to perfectly good solenoids. We installed one of our VIN-programmed T42 modules, cleared the codes, and the car shifted flawlessly. This is a common scenario; replacing the TCM first often saves hundreds in unnecessary parts and labor.
Is Your Pontiac G6 Showing These Telltale Signs?
A faulty TCM can manifest in several ways. If you’re experiencing any of the following, it’s a strong indicator that your module needs replacement:
- âś” Harsh, slamming shifts or delayed gear engagement.
- âś” Vehicle is stuck in ‘limp mode’ and won’t shift out of 2nd or 3rd gear.
- âś” The Check Engine Light or a transmission warning indicator is illuminated on your dash.
- âś” Your scan tool shows Diagnostic Trouble Codes (DTCs) like P0700, P0750, or other solenoid-related faults.
- âś” A noticeable drop in fuel efficiency or a transmission that seems to be overheating.
- âś” Complete loss of communication with the transmission module.
A Straightforward Guide to Your G6 TCM Swap
One of the best features of this part is its simple installation, which most DIYers can complete in under 30 minutes. The TCM on the Pontiac G6 is conveniently located and requires only basic hand tools.
- Safety First: Always disconnect the negative terminal from your vehicle’s battery to prevent electrical shorts and help reset the system.
- Locate the Module: On the 2006-2010 G6, the TCM is found on the driver’s side of the engine bay, mounted to the LH strut tower. It’s a silver box with electrical connectors.
- Disconnect and Remove: Carefully unclip the wiring harness connectors. Then, unbolt the module from its mounting bracket.
- Install the New TCM: Mount the new, pre-programmed module in the same location and securely fasten the bolts. Reconnect the wiring harnesses, ensuring they click into place.
- Final Steps: Reconnect the battery terminal. While the module is plug-and-play, it’s always best practice to use a scan tool to clear any stored fault codes from the vehicle’s memory.
By choosing our VIN-programmed 2006-2010 G6 TCM, you are not just buying a part; you are getting a complete, ready-to-install fix that restores your vehicle’s drivability and reliability. This module is also a direct replacement for a wide range of other GM vehicles, making it a versatile and dependable solution.
Verified Vehicle Compatibility List
This T42 TCM is engineered to fit a wide array of General Motors vehicles. Please confirm your model and the module location noted below. This part is a direct replacement for service numbers including 24252114, 24234503, 24235754, 24240449, and more.
- Pontiac G6 (2006-2010) – Transmission; (LH strut tower)
- Chevrolet Cobalt (2006-2010) – Transmission; (LH strut tower)
- Chevrolet HHR (2006-2011) – Transmission; (LH engine compartment)
- Chevrolet Impala (2006-2011) – Transmission; (lower air cleaner housing)
- Chevrolet Malibu (2006-2010) – Transmission; (LH frame rail)
- Chevrolet Monte Carlo (2006-07) – Transmission; (lower air cleaner housing)
- Saturn Aura (2007-2009) – Transmission; (LH frame rail front)
- Saturn Ion (2006-2007) – Transmission; (behind LH strut tower)
- Saturn Vue (2007-2010) – Transmission; (LH front engine compartment)
- …and many other GM cars, trucks, and SUVs listed in the original fitment data.
Frequently Asked Questions
Do I need to take my car to the dealer for programming?
Absolutely not. This is the biggest benefit we offer. We program the module to your car’s specific VIN before shipping it. This means it’s ready for installation right out of the box, saving you the time and expense of a dealership visit.
Is this part difficult to install myself?
For the Pontiac G6, this is a very DIY-friendly repair. The TCM is easily accessible on the driver’s side strut tower in the engine bay. With basic hand tools, most people can swap it in under 30 minutes.
What is a core charge?
There is no core charge for this module. You are not required to send your old, faulty part back to us, which simplifies the process for you.
Will this fix a P0700 trouble code?
A P0700 code is a general transmission fault request from the TCM to the ECM to turn on the check engine light. While this module often resolves the underlying cause of the P0700, it’s important to check for other specific transmission codes (e.g., P0751, P0756) that point to the exact problem. A failing TCM is a very common cause.
What kind of warranty is included?
This module comes with a one-year warranty, giving you peace of mind that you’re installing a quality, reliable part backed by our commitment to excellence.