2015-2016 Tahoe Engine Control Module ECM 12673195

Restore Peak Performance to Your Chevrolet Tahoe

Is your 2015 or 2016 Chevrolet Tahoe suffering from perplexing issues like a persistent check engine light, rough idling, poor fuel economy, or even a no-start condition? The Engine Control Module (ECM), the central computer of your vehicle’s powertrain, is often the culprit. This vital component manages everything from fuel injection and ignition timing to transmission shifting and emissions control. When it begins to fail, the symptoms can be widespread and frustrating. This replacement ECM, part number 12673195, is the definitive solution to restore your vehicle’s reliability and performance.

We take the guesswork and high cost out of the repair process. Unlike a generic module that requires an expensive trip to the dealership for programming, this unit arrives at your door fully programmed to your specific vehicle. Simply provide us with your Vehicle Identification Number (VIN) during checkout, and our technicians will flash the module with the latest, most stable software updates directly from GM. This ensures perfect compatibility and a seamless installation process, getting you back on the road quickly and confidently.

Common Symptoms of a Failing ECM

• ✔ Persistent and illuminated Check Engine Light (CEL)
• ✔ Vehicle refuses to start or has intermittent starting problems
• ✔ Noticeable decrease in fuel efficiency
• ✔ Rough or unstable engine idling
• ✔ Engine stalling, stuttering, or misfiring
• ✔ Poor acceleration and overall loss of power
• ✔ Harsh or erratic automatic transmission shifting
• ✔ Communication errors with diagnostic scan tools

The Smart Solution: A VIN-Programmed 2015-2016 Tahoe Engine Control Module

Navigating an ECM replacement can be daunting. A new module from a dealership can be prohibitively expensive, and a used one from a salvage yard is a gamble—it won’t work without being programmed, a service most shops can’t perform. Our solution provides the best of both worlds: a reliable, tested component that is 100% plug-and-play. By flashing the module with your VIN, we ensure that it communicates flawlessly with all other modules in your Tahoe, including the Body Control Module (BCM), Transmission Control Module (TCM), and anti-theft system. This eliminates compatibility conflicts and the need for additional dealer-level tools for setup.

Installation and Setup

Replacing the ECM is a straightforward task for a DIY mechanic with basic tools. The module is typically located in the engine compartment on the driver’s side. The general process involves:

1. Disconnect the Battery: Always disconnect the negative battery terminal before working on any electronic components.
2. Locate and Remove the Old ECM: Carefully unplug the electrical connectors and unbolt the module from its mounting bracket.
3. Install the New Module: Mount your new, pre-programmed ECM and securely reconnect all electrical harnesses.
4. Reconnect the Battery: Reattach the negative battery terminal.
5. Perform Security Relearn: In most cases, you will need to perform a simple security relearn procedure (often called a key relearn or anti-theft relearn). This can typically be done without special tools and involves a sequence of turning the key in the ignition. Instructions are readily available online or can be provided upon request.

This module is a direct replacement for part number 12673195 and is also compatible with a wide range of other GM part numbers, including 12692067, 12676230, 12656993, and more. It fits not only the 2015-2016 Tahoe but also a variety of other GM trucks, SUVs, and cars from the same era, such as the Silverado, Sierra, Yukon, Escalade, and Corvette. Please verify the part number or consult the detailed fitment list to ensure this is the correct component for your vehicle.