Restore Smooth Shifting to Your Pontiac G6
If you’re dealing with the frustration of a Pontiac G6 that shifts harshly, gets stuck in gear, or has an illuminated check engine light, a failing Transmission Control Module (TCM) is the most likely culprit. Over my 20 years in automotive diagnostics, I’ve seen these T42 modules cause countless headaches for drivers. This isn’t just an annoyance; it’s a reliability issue that can leave you stranded. This replacement 2006-2010 G6 Transmission Module, part number 24241806, is the definitive solution, arriving pre-programmed to your vehicle’s specific VIN for a true plug-and-play repair.
A Technician’s Notebook: The Intermittent G6
A customer brought in a 2008 Pontiac G6 with a complaint that stumped a few other shops: it would occasionally refuse to shift out of 2nd gear, but only after driving for 20-30 minutes. There were no consistent codes, just a generic P0700 (Transmission Control System Malfunction) that would pop up and disappear. After checking the wiring and solenoids, which all tested fine, we focused on the TCM. On the bench, we found that heat exposure was causing an internal circuit failure. Once we installed a new, VIN-programmed TCM, the problem was solved permanently. This is a classic failure pattern for these modules.
Is Your Pontiac G6 Showing These Warning Signs?
A faulty TCM doesn’t always mean a complete transmission failure. Often, the signs are subtle at first. If you notice any of the following, it’s time to consider a replacement to avoid more significant damage.
- ✔ Harsh, slamming, or delayed gear shifts.
- ✔ The vehicle feels stuck in one gear (often called ‘limp mode’).
- ✔ Check Engine Light or Transmission Warning Light is on with codes like P0700, P0750, P0753, P0758, or other solenoid-related faults.
- ✔ Inability to upshift or downshift properly.
- ✔ A noticeable drop in fuel economy.
- ✔ Intermittent loss of communication with the scan tool.
DIY-Friendly Installation in Under 30 Minutes
One of the best features of this module is its ease of installation, especially on the Pontiac G6. You don’t need a lift or specialized transmission tools. Just some basic hand tools and a few minutes of your time.
- Safety First: Disconnect the negative terminal from your vehicle’s battery to prevent any electrical shorts and to help reset the system.
- Locate the TCM: On the 2006-2010 Pontiac G6, the Transmission Control Module is conveniently located on the driver’s side strut tower in the engine bay. It’s easily accessible.
- Disconnect and Remove: Carefully unplug the electrical connectors. Press the release tabs firmly. 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. You should hear a ‘click’ as they lock in.
- Final Steps: Reconnect the battery terminal. Start the vehicle and allow it to idle for a few minutes. If you have a basic OBD2 scanner, it’s good practice to clear any stored fault codes.
Verified Vehicle Compatibility
This T42 Transmission Control Module is a direct-fit replacement for a wide range of General Motors vehicles. While this listing is focused on the 2006-2010 G6 Transmission Module, it is also compatible with the following models and more. Always verify your part number (24241806) or contact us with your VIN.
- Pontiac: G6 (2006-2010), G5 (2007-2010), Grand Prix (2006-2008)
- Chevrolet: Cobalt (2006-2010), HHR (2006-2011), Malibu (2006-2010), Impala (2006-2011), Silverado, Tahoe
- Saturn: Aura (2007-2009), Ion (2006-2007), Vue (2007-2010)
- Buick: LaCrosse (2006-2009), Lucerne (2006-2011)
- And many other GM trucks, vans, and SUVs from 2006-2014.
What does ‘VIN Programmed’ actually mean for me?
What does ‘VIN Programmed’ actually mean for me?
It means we load your vehicle’s unique Vehicle Identification Number (VIN) and the latest GM software onto the module before we ship it. This ensures it communicates perfectly with your car’s engine computer and other systems right out of the box, eliminating the need for an expensive trip to the dealership for programming.
Do I need any special tools for this installation?
What does ‘VIN Programmed’ actually mean for me?
It means we load your vehicle’s unique Vehicle Identification Number (VIN) and the latest GM software onto the module before we ship it. This ensures it communicates perfectly with your car’s engine computer and other systems right out of the box, eliminating the need for an expensive trip to the dealership for programming.
Will this fix a P0700 trouble code?
What does ‘VIN Programmed’ actually mean for me?
It means we load your vehicle’s unique Vehicle Identification Number (VIN) and the latest GM software onto the module before we ship it. This ensures it communicates perfectly with your car’s engine computer and other systems right out of the box, eliminating the need for an expensive trip to the dealership for programming.
What happens if I keep driving with a bad TCM?
What does ‘VIN Programmed’ actually mean for me?
It means we load your vehicle’s unique Vehicle Identification Number (VIN) and the latest GM software onto the module before we ship it. This ensures it communicates perfectly with your car’s engine computer and other systems right out of the box, eliminating the need for an expensive trip to the dealership for programming.
Is there a core charge for my old part?
What does ‘VIN Programmed’ actually mean for me?
It means we load your vehicle’s unique Vehicle Identification Number (VIN) and the latest GM software onto the module before we ship it. This ensures it communicates perfectly with your car’s engine computer and other systems right out of the box, eliminating the need for an expensive trip to the dealership for programming.