Restore Smooth, Reliable Shifting to Your Pontiac G6
Is your 2006-2010 Pontiac G6 suffering from harsh, erratic shifting, getting stuck in gear, or throwing transmission-related check engine lights? You’re not alone. The Transmission Control Module (TCM), the electronic brain of your automatic transmission, is a common failure point. This replacement T42 TCM, part number 24235753, is the definitive solution to get your car driving like new again. Forget expensive dealership diagnostics and programming fees; this module arrives at your door pre-programmed to your vehicle’s specific VIN, making it a true plug-and-play fix.
From the Diagnostic Bay
I recently had a 2008 Pontiac G6 in the shop with classic symptoms: it would slam into Drive and refuse to shift past 2nd gear. The customer was worried about a complete transmission failure, which would be a multi-thousand-dollar repair. A quick scan revealed a P0700 (Transmission Control System Malfunction) and a handful of solenoid communication codes. After 20 years of seeing this, I knew exactly where to look. The original TCM had failed due to heat and vibration. We installed one of our VIN-programmed modules, cleared the codes, and the car shifted perfectly on the test drive. It’s a 30-minute fix that saves customers from a massive headache and an even bigger bill.
Is Your Pontiac G6 Showing These Transmission Issues?
A failing TCM can manifest in several ways that disrupt your driving experience and can even be a safety concern. If you’re noticing any of the following, it’s a strong indicator that your 2006-2010 G6 TCM needs replacement:
- âś” Harsh or delayed engagement when shifting into Drive or Reverse.
- âś” Erratic, jerky, or unpredictable gear changes while driving.
- âś” Vehicle is stuck in “limp mode,” often locked in 2nd or 3rd gear.
- âś” The Check Engine Light or Transmission Warning Light is illuminated.
- âś” Diagnostic Trouble Codes (DTCs) are present, such as P0700, P0750, P0753, P0758, or other solenoid-related faults.
- âś” Complete loss of communication with the transmission module.
- âś” A noticeable decrease in fuel economy due to inefficient shifting.
DIY-Friendly Installation for Your G6
One of the best features of this part is the straightforward installation. For the Pontiac G6, the TCM is conveniently located and accessible for any DIY enthusiast. No specialized tools are required.
- Safety First: Disconnect the negative terminal from your vehicle’s battery to prevent any electrical shorts and to help reset the system.
- Locate the Module: On your 2006-2010 Pontiac G6, the TCM is found mounted to the driver’s side (LH) strut tower in the engine bay.
- Disconnect and Remove: Carefully unplug the electrical connectors from the old module. Then, unbolt the module from its mounting bracket.
- Install the New TCM: Mount the new, pre-programmed TCM in the same location and securely plug in the electrical connectors.
- Final Steps: Reconnect the battery terminal. While the module is plug-and-play, it’s always best practice to use a basic OBD2 scan tool to clear any stored fault codes from the vehicle’s memory.
Verified Vehicle Compatibility
This T42 Transmission Control Module is a direct-fit replacement for a wide range of General Motors vehicles. While this page focuses on the 2006-2010 G6 TCM, it is also compatible with the following models. Please verify your specific vehicle and options.
- 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 Silverado 1500/2500: 2007-2013 (Varies, typically next to battery)
- GMC Sierra 1500/2500: 2007-2013 (Varies, typically next to battery)
- Saturn Aura: 2007-2009 (Transmission; LH frame rail front)
- Saturn Vue: 2007-2010 (Varies by engine)
- …and many other GM models including Buick, Cadillac, GMC, Hummer, and Saab. This module replaces numerous part numbers including: 24252114, 24234503, 24235753, 24240449, and more.
Frequently Asked Questions
Do I need to take this part to a dealer for programming?
No. We program the module to your vehicle’s VIN before it ships. It arrives ready for a plug-and-play installation, saving you time and money.
Where is the TCM located on my 2007 Pontiac G6?
On the 2006-2010 Pontiac G6, the Transmission Control Module is located in the engine compartment, mounted to the driver’s side (LH) strut tower.
Will this fix a P0700 trouble code?
A P0700 code indicates a general fault in the transmission control system. While a failing TCM is a very common cause for this code, you should always diagnose any other accompanying codes (like solenoid faults) to confirm the TCM is the root cause. In most cases, replacing a faulty TCM will resolve the P0700 code.
Is there a core charge for this part?
No, there is no core charge. You can keep your old part, so you don’t have to worry about the cost or hassle of a return shipment.
What kind of warranty is included?
This module is backed by our one-year warranty, giving you peace of mind and confidence in your repair.