End Frustrating Shifting Problems in Your Pontiac Montana
If you’re dealing with a 2006-2009 Pontiac Montana that’s shifting harshly, getting stuck in gear, or throwing transmission codes, the problem is very often a failing Transmission Control Module (TCM). As a family vehicle, reliability is non-negotiable. A faulty TCM can leave you stranded in limp mode, compromise safety, and ruin your fuel economy. This isn’t just an annoyance; it’s a critical failure that needs a dependable solution. This replacement T42 TCM, part number 24241806, is the definitive answer to these widespread issues.
From the Diagnostic Bay: A Common Montana Story
I’ve seen countless Pontiac Montanas and similar GM vans come into the shop with erratic shifting. The owner has often already replaced a shift solenoid or two, chasing codes like P0753 or P0758, but the problem persists. The real culprit? The TCM itself. Internal circuit board failures from heat and vibration are extremely common in these T42 modules. This pre-programmed 2006-2009 Montana TCM is the exact solution I’ve used to provide a lasting repair, saving my customers the headache of repeat visits and the high cost of dealership programming.
Is Your Montana Exhibiting These Transmission Woes?
A failing TCM will give you clear warning signs. If you’re experiencing any of the following, it’s time to consider a replacement:
- ✔ Hard, slamming shifts between gears or delayed engagement from park to drive.
- ✔ The vehicle is stuck in one gear (often 2nd or 3rd) and will not upshift or downshift, also known as “limp mode.”
- ✔ Your Check Engine Light is on with transmission-specific Diagnostic Trouble Codes (DTCs), such as the general P0700 code or specific solenoid circuit codes.
- ✔ A noticeable drop in fuel efficiency as the transmission isn’t operating in the optimal gear.
- ✔ Complete loss of communication with the module, leading to a no-shift condition.
Straightforward DIY Installation Guide
One of the best features of this part is how simple it is to install. You don’t need a professional lift or specialized equipment. For the Pontiac Montana, the process is quick and accessible right in your driveway.
- 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 your 2006-2009 Montana, the TCM is conveniently located on the driver’s side of the engine bay, mounted to the LH strut tower.
- 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. While the module is plug-and-play, it’s always good practice to use a basic OBD2 scanner to clear any stored fault codes from the vehicle’s memory. Start the engine and test drive to confirm smooth shifting.
Verified Fitment for Your Vehicle
This module is a direct-fit replacement for the 2006-2009 Montana TCM. It is also compatible with a wide array of other General Motors vehicles that use the T42-style TCM. It interchanges with numerous part numbers, including 24252114, 24234503, 24240400, and your specific part 24241806, ensuring broad compatibility and a perfect match for your repair needs.
Frequently Asked Questions
What does “VIN Programmed” mean for me?
It means this module arrives ready for installation right out of the box. We program it with your vehicle’s specific VIN, so it communicates perfectly with the engine computer and other systems. This allows you to skip a costly and time-consuming trip to the dealership for programming.
Is this difficult to install myself?
Not at all. For a Pontiac Montana, this is a great DIY-friendly repair. With basic hand tools (like a socket set), you can complete the job in under 30 minutes. The location on the LH strut tower is easy to access.
Will this fix my P0700 transmission code?
A P0700 code is a general fault code indicating the TCM has detected a problem. In many cases where this code is present along with shifting issues, a faulty TCM is the root cause. Replacing it with this module is the direct solution for such failures.
Do I need to send my old TCM back?
No. We do not require a core return. You can keep your old part, which simplifies the process and saves you the hassle and cost of return shipping.
What kind of warranty is included?
This module is backed by our one-year, hassle-free warranty, giving you peace of mind and confidence in your repair.