Is Your 2007 Montana Experiencing Engine Problems?
If your 2007 Pontiac Montana is suffering from poor performance, erratic shifting, a persistent check engine light, or even a no-start condition, a failing Powertrain Control Module (PCM) could be the culprit. The PCM is the central computer of your vehicle, responsible for managing everything from fuel injection and ignition timing to transmission shift points and emissions systems. When it fails, it can cause a cascade of frustrating and difficult-to-diagnose issues, leaving your vehicle unreliable.
We had a 2007 Pontiac Montana SV6 come into the shop that had its owner completely stumped. The van would randomly stall at red lights and had a harsh 1-2 shift. The check engine light was on with a slew of communication and sensor codes. The owner had already replaced the throttle body and a couple of sensors with no luck. After hooking up our diagnostic scanner, we noticed the live data stream from the PCM was dropping out intermittently. This pointed directly to an internal failure in the module. We sourced a reliable, pre-programmed 2007 Montana PCM, installed it, performed a quick security relearn, and the van ran like new. It’s a classic case where swapping parts doesn’t work, but replacing the brain of the operation does.
Common Symptoms of a Failing PCM
- ✔ Persistent Check Engine Light (CEL) with various trouble codes.
- ✔ Engine stalling, stumbling, or misfiring for no apparent reason.
- ✔ Drastic decrease in fuel economy.
- ✔ Harsh or erratic automatic transmission shifting.
- ✔ Complete no-start or no-crank condition.
- ✔ Communication errors with diagnostic scan tools.
- ✔ Issues with other electronic modules, like the anti-lock brakes or traction control.
The Direct-Fit Solution: Part Number 19210736
This listing is for a genuine, used GM Powertrain Control Module, part number 19210736 (interchangeable with 12605843). We take the guesswork and high dealership cost out of the repair. This isn’t just a part in a box; it’s a complete solution. Before we ship it, our technicians will program the module with the latest GM software updates specifically for your vehicle using the VIN you provide. This ensures that when you receive the part, it is ready for installation, communicates correctly with all other modules, and restores your vehicle’s original performance and efficiency.
This 2007 Montana PCM is a cost-effective and reliable alternative to a new dealership part. Each unit is sourced from a salvaged vehicle and carefully inspected to ensure it is fully functional. By programming it to your VIN, we make the replacement process as simple as possible, often eliminating the need for expensive dealer-specific tools for setup.
Broad GM Compatibility
While this is the correct module for your 2007 Pontiac Montana, this versatile PCM was also used across a wide range of 2007 GM vehicles. It is compatible with models like the Cadillac DTS and SRX, Chevrolet Impala and Monte Carlo, Buick Lucerne, Saturn Aura, and many others. Please verify the part number 19210736 matches your original unit or consult the detailed fitment list to confirm compatibility with your specific make, model, and engine option.
Frequently Asked Questions
Is this part ready to install when I receive it?
Yes! This module is programmed to the specific Vehicle Identification Number (VIN) you provide after your purchase. This means it will be ready for installation. In some cases, a simple security or CASE (Crankshaft Angle Sensor Error) relearn procedure may be required after installation, which can be done with many common professional scan tools.
Where do I provide my vehicle’s VIN?
After you complete your purchase, you will need to send us your 17-digit VIN. You can typically add it as a note during checkout or send us a message directly through the platform. We cannot ship the module until we have your VIN to program it.
What is the difference between a PCM and an ECM?
The terms are often used interchangeably. ECM stands for Engine Control Module, while PCM stands for Powertrain Control Module. A PCM is a more advanced type of ECM that controls both the engine and the transmission functions. This part, 19210736, is a PCM.
Is this a new part?
No, this is a fully functional, tested computer that was sourced from a salvaged vehicle. This allows us to offer a reliable, programmed solution at a fraction of the cost of a new module from a dealership.
How can I be sure my old PCM is the problem?
Diagnosing a faulty PCM can be tricky. It’s best to have a professional technician perform a full diagnostic check. Common indicators include multiple unrelated error codes, stalling, no-start conditions, and failure to communicate with a scan tool. If other potential causes like sensors, wiring, and fuel delivery have been ruled out, the PCM is a likely culprit.