Programmed 2014-2016 Sierra 1500 ECM Engine Control Module 12672537

Restore Peak Performance to Your GM Truck or SUV

As a technician with over two decades of experience under the hood, I’ve seen firsthand the frustration that a failing Engine Control Module (ECM) can cause. Your 2014-2016 Sierra 1500 Pickup isn’t just a vehicle; it’s a tool, a partner, and a key part of your daily life. When it starts acting up—stalling, shifting erratically, or refusing to start—it disrupts everything. The ECM is the brain of your engine, and when it falters, the entire system suffers. That’s why we offer this direct-fit, fully programmed Engine Control Module, part number 12672537, to get you back on the road with confidence.

Forget the expensive dealership visits and the hassle of coordinating a tow for programming. We handle the critical first step for you. Simply provide us with your vehicle’s VIN at checkout, and our experts will flash this module with the latest, most stable GM software specific to your truck. This ensures seamless communication between all your vehicle’s systems, from the engine and transmission to the fuel and ignition. It arrives at your door ready for a straightforward installation, making this a job you can confidently tackle in your own garage.

Is Your Truck Exhibiting These ECM Failure Signs?

A faulty ECM can manifest in numerous ways. If you’re experiencing any of the following, it’s a strong indicator that your engine’s computer may be the culprit.

• ✔ Check Engine Light is illuminated, often with codes like P0601, P0606 (Internal Control Module Processor Error), or other communication codes.
• ✔ The engine cranks but refuses to start.
• ✔ Noticeable decrease in fuel economy.
• ✔ The transmission shifts harshly or at the wrong times.
• ✔ Engine stalling, stumbling, or misfiring for no apparent reason.
• ✔ Issues with other electronic systems, as the ECM is a central communication hub.

Your Straightforward Guide to a 2014-2016 Sierra 1500 ECM Installation

This installation is designed to be simple for both seasoned mechanics and determined DIYers. With the programming already done, it’s a true plug-and-play process.

1. Safety First: Always disconnect the negative terminal from your vehicle’s battery and secure it away from the post to prevent any accidental power surges.
2. Locate the ECM: On most 2014-2016 Sierra and Silverado 1500 models, the ECM is located in the front of the engine compartment on the driver’s side, near the air filter housing.
3. Disconnect the Wiring: Carefully release the locking tabs on the electrical connectors and pull them straight out from the module. Avoid pulling on the wires themselves. There are typically three or four large connectors.
4. Remove the Old Module: Unbolt the mounting hardware that secures the old ECM to its bracket. Keep the hardware, as you will reuse it for the new module.
5. Install the New ECM: Mount the new, pre-programmed ECM onto the bracket and secure it with the original hardware. Reconnect the electrical harnesses, ensuring they click firmly into place.
6. Reconnect the Battery: Reattach the negative battery terminal. Some vehicles may require a security relearn procedure, which typically involves cycling the key. Consult your owner’s manual for specific steps if needed.

Verified Compatibility for Your GM Vehicle

This module is a direct replacement for part number 12672537 and is interchangeable with several other GM part numbers, including 12692067, 12676230, 12656993, and more. It is confirmed to fit the following vehicles, but always verify your part number or consult with us if you’re unsure.

Frequently Asked Questions