Restore Peak Performance to Your Pontiac Montana’s Transmission
If your 2006, 2007, 2008, or 2009 Pontiac Montana is suffering from erratic shifting, getting stuck in gear, or has an illuminated check engine light with transmission codes, a failing Transmission Control Module (TCM) is the most likely culprit. This critical component is the brain of your automatic transmission, and when it fails, it can mimic a catastrophic internal failure. Before considering a costly transmission replacement, replace the faulty unit with this direct-fit, VIN-programmed T42 TCM, designed to restore the smooth, reliable performance you expect from your vehicle.
From the Diagnostic Bay
We recently had a 2007 Montana minivan towed to the shop. The owner was convinced the transmission was completely shot. It would slam into gear and was stuck in ‘limp mode,’ unable to shift past 3rd gear. A quick scan pulled a P0700 code along with several solenoid circuit faults. Instead of quoting a multi-thousand dollar transmission job, we identified the root cause: the original TCM. We installed one of these pre-programmed T42 modules, cleared the codes, and had the van shifting perfectly on a test drive just 30 minutes later. It’s a common issue, and this part is the definitive solution, saving the customer a massive headache and expense.
Is Your Montana Showing These TCM Failure Symptoms?
A failing TCM can cause a variety of alarming issues. If you’re experiencing any of the following, this module is the solution you need:
- ✔ Harsh, delayed, or unpredictable gear shifts that make driving uncomfortable.
- ✔ The vehicle suddenly enters “limp mode,” often getting stuck in 2nd or 3rd gear.
- ✔ Your check engine light or a dedicated transmission warning light is on.
- ✔ Diagnostic scans reveal codes like P0700, P0750, or other solenoid-related faults.
- ✔ A complete failure to upshift or downshift, leading to poor acceleration and fuel economy.
- ✔ Intermittent electrical problems that seem to have no other cause.
Key Features of this 2006-2009 Montana Transmission Module
This isn’t just a replacement part; it’s a complete solution designed for a hassle-free repair. Our module ensures your vehicle gets back on the road quickly and reliably.
- ✔ Plug & Play Installation: This module comes expertly pre-programmed to your Montana’s specific Vehicle Identification Number (VIN). This critical step ensures it communicates perfectly with your vehicle’s engine computer and other systems right out of the box, eliminating the need for an expensive trip to the dealership for programming.
- ✔ Restores Original Performance: Loaded with the latest GM software updates, this TCM corrects common factory flaws and ensures precise control over shift points, torque converter lockup, and line pressure for optimal drivability and fuel efficiency.
- ✔ OEM-Quality Construction: Built to meet or exceed original equipment standards for durability and performance. It’s engineered to withstand the demanding environment of the engine bay, ensuring long-lasting reliability.
- ✔ No Core Charge: Unlike many suppliers, we do not require you to send back your old, faulty part. This saves you time, money on shipping, and the hassle of managing a core return.
Simple Installation Process
For the 2006-2009 Pontiac Montana, this TCM is conveniently located on the LH (driver’s side) strut tower in the engine compartment, making it easily accessible. The replacement process is straightforward and can typically be completed in under 30 minutes with basic hand tools. Simply disconnect the vehicle’s battery, unplug the electrical connectors from the old module, unbolt it, and install the new one in its place. Once reconnected, use a standard OBD2 scan tool to clear any stored diagnostic trouble codes (DTCs) for a fresh start.
This T42 TCM is also a direct replacement for a wide array of other GM vehicles and is interchangeable with numerous part numbers, including 24252114, 24234503, 24230461, 24234274, 24235754, and 24240449. Restore your vehicle’s transmission health and drive with confidence. Order today!
Frequently Asked Questions
What is VIN programming and why is it essential?
VIN programming loads your vehicle’s specific software and calibration files onto the module. This is crucial for the TCM to communicate correctly with the engine computer and other vehicle systems. Without it, the transmission will not shift properly, if at all. Our pre-programming service saves you a trip to the dealer and ensures a true plug-and-play installation.
Is this a difficult part to install on my Montana?
No, this is considered a simple repair for a DIY mechanic with basic tools. The module is located on the driver’s side strut tower in the engine bay. The process involves disconnecting the battery, unplugging two connectors, and removing a few bolts. Most people can complete the job in under 30 minutes.
Will this module fix a P0700 trouble code?
A P0700 code is a generic code indicating that the TCM has detected a fault and has requested the check engine light be turned on. Often, this code is accompanied by more specific codes pointing to a faulty TCM or its circuits. Replacing a bad TCM is a very common fix for a P0700 code.
Do I need to send my old TCM back?
No. We do not have a core charge for this part. You can keep your old module or dispose of it without any hassle or additional cost.
How do I ensure this is the correct part for my vehicle?
This module is the correct fit for the 2006-2009 Pontiac Montana. You can also verify by matching the part number 24235753 or one of the interchangeable numbers listed in the description to your old part. When you order, we will program it to the VIN you provide, guaranteeing compatibility.