Restore Peak Transmission Performance in Your Pontiac Montana
Is your 2006-2009 Pontiac Montana suffering from erratic shifting, getting stuck in gear, or displaying a check engine light with transmission codes? These are classic signs of a failing Transmission Control Module (TCM). This critical component is the brain of your automatic transmission, responsible for managing shift points, torque converter clutch engagement, and fluid pressure. When it fails, it can lead to poor performance, decreased fuel economy, and potentially catastrophic transmission damage if left unaddressed.
This genuine OEM-quality T42 TCM, service number 24234274, is the definitive solution. It arrives pre-programmed to your vehicle’s specific Vehicle Identification Number (VIN), ensuring a seamless, plug-and-play installation without the need for an expensive trip to the dealership for programming. Restore the smooth, reliable operation your vehicle had when it was new.
From the Diagnostic Bay
We had a 2008 Uplander (which uses the same platform and TCM as the Montana) come into the shop stuck in ‘limp mode’—it wouldn’t shift out of 3rd gear. The owner had already replaced two shift solenoids based on the trouble codes, but the problem persisted. A quick scan showed communication errors with the TCM. Instead of continuing to replace internal parts, we installed a VIN-programmed TCM. The vehicle immediately began shifting perfectly, and all codes were cleared. It’s a common scenario where the root cause is the module itself, not the mechanical parts it controls.
Symptoms of a Failing Montana TCM
- ✔ Harsh, delayed, or unpredictable gear shifts.
- ✔ The vehicle feels stuck in one gear (limp mode).
- ✔ Illumination of the Check Engine Light or Transmission Warning Light.
- ✔ Diagnostic trouble codes (DTCs) such as P0700, P0750, or other solenoid-related faults.
- ✔ Failure to engage drive or reverse, or a significant delay in engagement.
- ✔ A noticeable drop in fuel efficiency.
- ✔ Inability for the torque converter to lock up at highway speeds.
Why Choose Our 2006-2009 Montana Transmission Module?
This isn’t just a replacement part; it’s a complete solution designed for longevity and ease of installation. We handle the complex programming so you can get your vehicle back on the road quickly. Each module is loaded with the latest GM software updates for your specific VIN, which often corrects factory flaws and improves transmission behavior. Built to strict OEM specifications, this module ensures reliable performance and is backed by our one-year warranty for your peace of mind.
Key Features & Benefits
- ✔ Plug & Play Installation: Comes fully programmed to your VIN. No dealership visit required.
- ✔ Restores Shift Quality: Eliminates harsh shifting, slipping, and delayed engagement for a smoother ride.
- ✔ Solves Fault Codes: A direct fix for common TCM-related DTCs that cause check engine lights.
- ✔ OEM-Standard Durability: Engineered for reliability and a long service life, matching factory performance.
- ✔ No Core Charge: Keep your old part. There’s no need to worry about returns or extra charges.
The 2006-2009 Montana Transmission Module is located on the LH (driver’s side) strut tower, making it easily accessible for a straightforward replacement that typically takes less than 30 minutes. 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.
Frequently Asked Questions
Do I need to get this module programmed by a dealer?
No. We pre-program the module to your vehicle’s VIN before shipping. It will arrive ready for a direct, plug-and-play installation without any additional programming needed.
Where is the TCM located on my 2007 Pontiac Montana?
For the 2006-2009 Pontiac Montana, as well as similar vans like the Uplander and Terraza, the Transmission Control Module is typically found bolted to the driver’s side (LH) strut tower in the engine compartment.
Will this fix a P0700 trouble code?
A P0700 code is a general transmission fault request from the TCM to the Engine Control Module (ECM) to turn on the check engine light. While this module can resolve the underlying issue that causes a P0700, it’s important to have the specific transmission codes (e.g., P0751, P0756) to confirm the TCM is the likely cause.
Is this compatible with other GM vehicles?
Yes, this T42 TCM is compatible with a wide range of GM vehicles from 2006-2014 that use 4-speed automatic transmissions like the 4L60E and 4L65E. This includes many Chevrolet, GMC, Buick, Pontiac, Saturn, and Cadillac models. Please verify your part number or contact us with your VIN to ensure perfect fitment.
What is the warranty on this part?
This transmission control module comes with a one-year replacement warranty, giving you confidence in your purchase and repair.