Restore Peak Performance to Your Pontiac Montana’s Transmission
Is your 2006-2009 Pontiac Montana suffering from harsh, erratic shifting, delayed gear engagement, or a frustrating “limp mode”? These are common and clear indicators of a failing Transmission Control Module (TCM). As the central computer for your automatic transmission, a faulty TCM can cause a cascade of performance issues, from poor fuel economy to a complete inability to shift gears. This replacement T42 TCM, part number 24230461, is the definitive solution to restore your vehicle’s drivability and reliability.
The most significant advantage of our module is the included VIN programming. We pre-program each unit with your vehicle’s specific Vehicle Identification Number and the latest GM software updates before it ships. This critical step ensures complete compatibility and communication with your vehicle’s other systems, eliminating the need for an expensive and time-consuming visit to the dealership. It’s a true plug-and-play solution designed to get you back on the road quickly.
From the Diagnostic Bay
We recently worked on a 2008 Montana that was throwing a generic P0700 transmission fault code and shifting violently between first and second gear. The owner was convinced the transmission needed a full rebuild. However, our diagnostic scan revealed intermittent communication loss with the TCM. Instead of a costly mechanical repair, the fix was a simple swap with a VIN-programmed module like this one. The new module immediately resolved the communication errors, cleared the codes, and made the van shift like new. Always check the electronics before condemning the hard parts.
Symptoms of a Failing 2006-2009 Montana TCM
- ✔ Harsh or abrupt gear changes, especially between 1st and 2nd gear.
- ✔ The vehicle gets stuck in a single gear (limp mode) to prevent further damage.
- ✔ Check Engine Light or Transmission Warning Light is illuminated on the dashboard.
- ✔ Diagnostic Trouble Codes (DTCs) such as P0700, P0750, or other solenoid-related codes are stored.
- ✔ Delayed engagement when shifting from Park to Drive or Reverse.
- ✔ A noticeable decrease in fuel efficiency.
- ✔ Complete failure to shift, resulting in the vehicle being inoperable.
Installation and Compatibility
Replacing the TCM is a straightforward process for a DIY mechanic or professional technician. On the 2006-2009 Pontiac Montana, this module is typically located on the LH (driver’s side) strut tower in the engine compartment. Simply disconnect the battery, unplug the electrical connectors from the old module, unbolt it, and install the new one in its place. Reconnect everything, and you’re ready to go. We recommend using a scan tool to clear any old fault codes after installation. This module is a direct replacement for multiple part numbers, including 24252114, 24234503, 24230461, and more, ensuring a perfect fit for your application.
Frequently Asked Questions
Do I need to have a dealership program this module?
No. This module comes pre-programmed to your vehicle’s specific VIN. It is ready for installation right out of the box, saving you time and money on dealership programming fees.
Where is the TCM located on my 2007 Pontiac Montana?
For the 2006-2009 Montana, the Transmission Control Module is typically found in the engine bay, mounted to the driver’s side (LH) strut tower.
Will this part fix a P0700 trouble code?
A P0700 code is a general fault code indicating that the TCM has detected a problem and requested the check engine light be turned on. While this module often resolves the root cause of a P0700, it’s essential to diagnose any other accompanying codes to confirm the TCM is the issue.
Is there a core charge for my old part?
No, we do not require a core charge. You can keep your old part without any additional fees or hassle.
What kind of warranty is included?
This transmission control module is backed by our standard one-year warranty, giving you peace of mind with your purchase.