2017-2019 Silverado ECM Engine Control Module 12692201 Programmed

Is Your GM Truck or SUV Experiencing Frustrating Engine Problems?

A vehicle that won’t start, runs poorly, or has an illuminated Check Engine Light can be a major source of stress. If your 2017-2019 GM vehicle is suffering from erratic behavior, poor fuel economy, or shifting issues, the root cause is often a failing Engine Control Module (ECM). As the central computer, the ECM is responsible for managing everything from fuel injection and ignition timing to transmission shifting and emissions control. When it fails, the symptoms can be widespread and difficult to diagnose, but a replacement is often the only definitive solution.

This is a direct-fit replacement ECM, part number 12692201 (also compatible with 12668986), designed to restore your vehicle’s factory performance and reliability. The most significant advantage of our service is that we program the module to your vehicle’s specific Vehicle Identification Number (VIN) before it ships. This critical step ensures the ECM has the correct software and calibrations for your exact engine, transmission, and options, saving you a costly and time-consuming trip to the dealership for programming.

Diagnosing a Faulty 2017-2019 Silverado ECM

Identifying a failing ECM requires careful observation of symptoms and, ideally, the use of a professional scan tool. A faulty module can disrupt communication across the vehicle’s network, leading to a cascade of confusing error codes and performance issues. If you’re experiencing several of the following problems, your ECM is a likely culprit.

• ✔ Check Engine Light: A persistent Check Engine Light is the most common indicator. You may see codes related to internal module failure, processor errors, or loss of communication (U-codes).
• ✔ No-Start or Intermittent Start: The engine may crank but refuse to start, or it may start unpredictably. This can be caused by the ECM failing to command the fuel pump or ignition coils.
• ✔ Poor Engine Performance: Symptoms include rough idling, stalling, engine misfires, hesitation during acceleration, and a noticeable decrease in power.
• ✔ Reduced Fuel Economy: An ECM that isn’t correctly managing the air-fuel mixture will often cause a significant drop in your vehicle’s MPG.
• ✔ Transmission and Shifting Problems: The ECM works with the Transmission Control Module (TCM). A failing ECM can lead to harsh shifting, getting stuck in gear, or incorrect shift points.
• ✔ Cooling Fans Running Constantly: As a fail-safe, the ECM may command the cooling fans to run at all times, even when the engine is cold.

The Simple, Reliable Solution

Don’t let a faulty computer keep your truck off the road. This replacement 2017-2019 Silverado ECM is your path to a smooth-running vehicle. By providing us with your VIN during checkout, you receive a module that is ready for installation, loaded with the latest GM-certified software for your specific application. This process ensures all parameters are set correctly, restoring the precise engine management your vehicle had when it left the factory.

Vehicle Fitment Information:

This module is a confirmed fit for the following vehicles and options. Please verify your part number and application before ordering.

• 2017-2018 Chevrolet Silverado 2500 Pickup: Electronic Control Module; (LH front engine compartment), 6.0L
• 2017-2019 Chevrolet Silverado 3500 Pickup: Electronic Control Module; (LH front engine compartment)
• 2017-2018 GMC Sierra 2500 Pickup: Electronic Control Module; (LH front engine compartment), 6.0L
• 2017 Chevrolet Suburban 3500: Electronic Control Module; (LH front engine compartment)
• 2017-2018 Chevrolet Sonic: Electronic Control Module
• 2017-2018 Buick Encore: Electronic Control Module; (1.4L), VIN B (8th digit, opt LUV)

After installation, you may need to perform a simple security relearn procedure (also known as a Passlock or anti-theft relearn) to sync the new ECM with your vehicle’s keys. This procedure can typically be done without special tools and instructions are widely available online or in service manuals.