2006 Montana Engine Control Module ECM 12607096 Programmed to Your VIN

Is Your 2006 Pontiac Montana Experiencing Engine Problems?

If you’re dealing with a 2006 Pontiac Montana that suddenly won’t start, stalls for no reason, or has a persistent Check Engine light that no amount of part-swapping seems to fix, the problem might be deeper than a simple sensor. As a technician with over two decades of experience under the hood, I’ve seen these exact issues hundreds of times. Often, the culprit is the very brain of the operation: the Engine Control Module (ECM).

The Brain of Your Engine: Why the ECM is Critical

Think of the ECM as the central command center for your Montana’s 3.9L engine. It constantly takes in data from dozens of sensors—like oxygen sensors, throttle position, and engine speed—and makes thousands of calculations per second. Based on this data, it precisely controls:

• ✔ Fuel injector pulse width (how much fuel to spray)
• ✔ Ignition timing (when to fire the spark plugs)
• ✔ Idle speed control
• ✔ Emissions systems (like the EGR valve and evaporative system)
• ✔ Communication with the Transmission Control Module (TCM) for smooth shifting

When the ECM fails, this entire symphony of operations falls apart, leading to a wide range of confusing and frustrating symptoms.

Common Symptoms of a Failing 2006 Montana ECM

A faulty ECM can manifest in many ways. If you’re experiencing any of the following, your engine computer is a likely suspect:

• ✔ Check Engine Light: Often with communication-related codes (U-codes) or internal processor failure codes (P06xx series).
• ✔ No-Start or Hard Starting: The engine cranks but won’t fire up because the ECM isn’t commanding fuel or spark.
• ✔ Engine Stalling: The vehicle may die unexpectedly while driving or at an idle.
• ✔ Poor Performance & Fuel Economy: Without correct calculations, the engine runs inefficiently, leading to reduced power and more trips to the gas station.
• ✔ Erratic Shifting: The ECM’s communication with the TCM is vital for proper automatic transmission function.
• ✔ Apparent Failure of Multiple Sensors: If your scan tool shows codes for numerous unrelated sensors at once, it’s often the ECM itself that can’t read them correctly.

The Simple, Reliable Solution: A VIN-Programmed ECM

Replacing an ECM used to mean buying the part, installing it, and then having your vehicle towed to a dealership for expensive programming. This part eliminates that hassle. This is a genuine GM Engine Control Module, service part number 12607096, that we program specifically for your vehicle before it ever leaves our facility.

Here’s how it works:

1. You purchase this ECM.
2. You provide us with your vehicle’s 17-digit VIN.
3. Our technicians use professional-grade tools to flash the module with the latest, most up-to-date GM software calibration for your exact 2006 Pontiac Montana.
4. We ship the ready-to-install module directly to you.

This process ensures that the ECM has the correct software for your engine, transmission, and factory options. It’s a true plug-and-play solution that gets you back on the road without the dealership headache. In most cases, after installation, you may only need to perform a simple security relearn procedure, which typically involves turning the key on for 10-15 minutes and can be done in your own driveway.

Guaranteed Fitment & Compatibility

This ECM, part number 12607096, is a direct replacement for a wide range of GM vehicles. It is interchangeable with several other service numbers, ensuring broad compatibility. Please verify your original part number against this list:

• ✔ 12590032
• ✔ 12602044
• ✔ 12603530
• ✔ 12605843
• ✔ 12607096
• ✔ 12630457
• ✔ 19210737

While this module fits many models, the VIN-specific programming is what makes it the perfect, tailored solution for your 2006 Pontiac Montana (SV6) with the 3.9L engine, typically located in the left-hand (driver’s side) engine compartment.