Is Your Pontiac Montana Shifting Erratically?
A failing transmission control module (TCM) in your family’s minivan can be more than just an inconvenience—it’s a serious concern. If you’re dealing with sudden harsh shifts, a transmission that seems to have a mind of its own, or a check engine light that won’t go away, you’ve found the solution. This genuine GM T42 Transmission Control Module is the definitive fix for your 2006-2009 Pontiac Montana, arriving pre-programmed to your vehicle’s specific VIN for a simple, plug-and-play installation that gets you back on the road with confidence.
Common Symptoms & Your Solution
A bad TCM can cause a host of frustrating and concerning issues. Your vehicle is signaling for help when it displays symptoms like delayed gear engagement, getting stuck in “limp mode” (usually 2nd or 3rd gear), or throwing transmission-related diagnostic trouble codes (DTCs) such as P0700. This module is engineered to resolve these exact problems, restoring the smooth, reliable performance your family depends on. Don’t let a faulty computer dictate your vehicle’s safety and drivability; take control with this reliable replacement Pontiac Montana transmission control module.
- ✔ Plug & Play Installation: This module arrives expertly programmed to your Montana’s VIN. No expensive trips to the dealer for programming are required—just install it and go.
- ✔ Restores Smooth Shifting: Eliminates harsh, erratic, and delayed shifting by re-establishing precise communication between your engine and transmission.
- ✔ Clears Fault Codes: Directly addresses the root cause of common transmission codes like P0700, P0750, and other solenoid-related faults.
- ✔ OEM-Quality Reliability: Built to strict General Motors standards to ensure long-lasting performance and durability, giving you peace of mind on every trip.
- ✔ Cost-Effective Repair: Save hundreds of dollars by avoiding dealership programming fees and performing the straightforward installation yourself.
- ✔ Purchase with Confidence: This unit is backed by our one-year replacement warranty.
Expert Insight: The Power of VIN Programming
Why is VIN programming so critical for a modern vehicle like your Montana? The TCM doesn’t just manage shifts; it’s in constant communication with the Engine Control Module (ECM) and other vehicle systems. An improperly programmed or generic module can cause communication conflicts, leading to persistent error codes and performance issues that mimic other failed parts. Our process ensures the module has the latest GM software and is perfectly matched to your vehicle’s specific configuration, guaranteeing seamless integration and optimal transmission function from the moment you turn the key.
By replacing your failing unit with this pre-programmed Pontiac Montana transmission control module, you are not just swapping a part—you are restoring a critical component of your vehicle’s powertrain logic. This ensures proper torque converter lockup, improved fuel efficiency, and the predictable operation you need for safe family transport. The installation is simple, typically located at the LH strut tower, making it an accessible job for a home mechanic.
Frequently Asked Questions
Will this part fit my 2007 Pontiac Montana?
Yes, this T42 TCM is the correct replacement for all 2006, 2007, 2008, and 2009 Pontiac Montana models. It is pre-programmed to your specific VIN to ensure perfect compatibility.
Do I need any special tools to install this?
No special tools are required. Basic hand tools like a socket set are typically all that’s needed for the installation. The most important step is to disconnect the vehicle’s battery before you begin.
Is this part difficult to locate on my vehicle?
For the Pontiac Montana, the TCM is generally easy to access. You will find it located on the driver’s side of the engine compartment, mounted to the LH strut tower.
Will this fix my check engine light and transmission warning codes?
Absolutely. This module is designed to resolve the internal electronic faults that cause transmission-related DTCs. Once installed, the active fault will be corrected. We recommend clearing any stored codes with a basic scan tool after installation for a clean slate.
Do I have to send my old module back?
No, there is no core charge for this part. You can keep your old module, which saves you the time and hassle of return shipping.