Is Your GM Truck or SUV Running Rough? Get the Right Fix, The First Time.
If you’re dealing with a persistent check engine light, unexplained stalling, poor fuel mileage, or a no-start condition in your truck, the Engine Control Module (ECM) is often the culprit. As the brain of your vehicle’s engine, when it fails, it can cause a cascade of frustrating and difficult-to-diagnose problems. This isn’t just a part; it’s the central command for your engine’s performance and reliability. We offer a dependable, straightforward solution: a genuine GM ECM, part number 12674052, professionally programmed to your vehicle’s specific VIN.
Real-World Diagnosis: “A customer’s 2017 Silverado 1500 came into my shop last month with a complaint of random stalling and a flashing check engine light. The codes were all over the place—misfires, communication errors, and throttle body faults. After confirming the wiring harness was intact, we pinpointed the issue to an internal failure in the original ECM. A failing module can send confusing signals, making diagnosis a nightmare. Installing a correctly programmed ECM like this one resolved all the issues instantly.”
The Smarter Solution: A 2016-2018 Sierra 1500 ECM Programmed for You
Don’t waste time or money on a generic, unprogrammed module from a local parts store that will require an expensive trip to the dealership. We handle the critical programming for you before we ship, ensuring a smoother installation process.
- ✔ VIN-Specific Programming: We load the latest, most stable GM factory software directly onto the module using your vehicle’s VIN. This ensures perfect compatibility with your engine, transmission, and options.
- ✔ Direct-Fit Replacement: This module is a direct replacement for several part numbers, including 12692068, 12704476, 12686382, 12674472, and 12678815.
- ✔ Solves Common Failures: Effectively addresses issues like false trouble codes, communication loss, injector driver faults, and intermittent no-start conditions.
- ✔ Restores Performance: A properly functioning ECM is key to restoring lost horsepower, torque, and fuel efficiency.
Important Installation Information: Please Read Carefully
To ensure a successful repair, it’s crucial to understand the post-installation steps. Because this ECM is a vital part of your vehicle’s security system, additional procedures are required.
- Provide Your VIN: After placing your order, you MUST send us your 17-digit Vehicle Identification Number (VIN). We cannot program or ship your part without it.
- Security Relearn Procedure: Upon installation, your vehicle may not start. This is normal. The vehicle’s anti-theft system must be synchronized with the new ECM. This is called a “Vehicle Theft Deterrent System Relearn.” This procedure requires a professional scan tool with GM programming capabilities, such as GM Tis2web or Techline Connect. This is the responsibility of the installer.
- Additional Relearns: Depending on your vehicle’s specific configuration, other procedures like a Crankshaft Position Variation Relearn or injector flow rate programming may also be necessary to achieve optimal performance.
Expert Pro Tip: Check Your Connections
Before plugging in your new ECM, take 60 seconds to carefully inspect the vehicle’s main harness connectors. Look for any green or white crusty buildup (corrosion) or any pins that look bent or pushed back. A poor connection can damage the new module or mimic the exact symptoms of the old failed one. Using a dedicated electronic contact cleaner on the harness side can prevent a costly mistake and ensure a solid connection.
Guaranteed Vehicle Fitment
This Engine Control Module is compatible with a wide range of GM vehicles. Please verify your model and specific options below:
- ATS 2017 (3.6L, VIN Y, opt LF4)
- CORVETTE 2017
- CTS 2017 (6.2L Supercharged or 3.6L Twin Turbo, VIN 8, opt LF3)
- ESCALADE & ESCALADE ESV 2017
- SIERRA 1500 PICKUP 2016 (ID 12674472)
- SIERRA 1500 PICKUP 2017
- SIERRA 1500 PICKUP 2018 (ID 12686382)
- SIERRA DENALI 1500 2017-2018
- SILVERADO 1500 PICKUP 2016 (ID 12674472)
- SILVERADO 1500 PICKUP 2017
- SILVERADO 1500 PICKUP 2018 (ID 12686382)
- SUBURBAN 1500 2017
- TAHOE 2017
- XTS 2017 (3.6L, VIN 8, opt LF3)
- YUKON & YUKON XL 1500 2017