Restore Peak Performance to Your GM Truck or SUV
Is your 2017 GMC Yukon, Tahoe, or Silverado suffering from baffling electrical issues, a persistent check engine light, or a no-start condition? The Engine Control Module (ECM), often called the engine’s brain, is the central command unit responsible for managing everything from fuel injection and ignition timing to transmission shifts and emissions. When it fails, it can cause a cascade of problems that can leave your vehicle unreliable and frustrating to drive. This replacement Engine Control Module, part number 12674472, is the definitive solution to restore your vehicle’s factory performance and reliability.
Unlike a generic part from a local store, this ECM is not just a piece of hardware; it’s a complete, vehicle-specific solution. Before we ship it, we program the module using your vehicle’s unique Vehicle Identification Number (VIN). This critical step ensures the ECM is loaded with the latest, most stable software updates directly from GM. This VIN-specific programming guarantees seamless communication with your vehicle’s other modules, correct engine and transmission parameters, and proper function of all related systems, eliminating the guesswork and costly programming fees at a dealership.
Expert Pro Tip
Before beginning the installation, ensure your vehicle’s battery is fully charged and disconnected. A weak or fluctuating battery voltage can cause communication errors during the critical post-installation relearn procedures. For the Vehicle Theft Deterrent System (VTDS) relearn, using a professional-grade scan tool with access to GM’s Tis2web or Techline Connect is highly recommended for a smooth, error-free process.
Common Symptoms of a Failing ECM
- ✔ Persistent Check Engine Light (CEL) that won’t clear, often with communication-related fault codes (e.g., U-codes).
- ✔ Unexplained engine stalling, rough idling, or hesitation during acceleration.
- ✔ Complete no-start or intermittent starting problems where the engine cranks but won’t fire.
- ✔ Noticeable decrease in fuel economy and loss of engine power.
- ✔ Harsh or erratic automatic transmission shifting.
- ✔ Malfunctions in other electronic systems that seem unrelated to the engine.
Installing Your 2017 Yukon Engine Module
This module is a direct-fit replacement, making the physical installation straightforward for a competent DIY mechanic or any professional technician. However, the electronic setup after installation is a crucial step. Because the ECM is tied into your vehicle’s security system, a Vehicle Theft Deterrent System (VTDS) relearn is mandatory. If this procedure is not performed, the vehicle will not start as a security precaution. This relearn synchronizes the new ECM with your vehicle’s existing security components.
Additionally, other procedures like a crankshaft variation relearn or injector flow rate programming may be required depending on your specific vehicle and its condition. It is the buyer’s responsibility to ensure these necessary relearn and setup procedures are completed by a qualified technician with the appropriate GM-compatible diagnostic tools. By purchasing this part, you are receiving a module correctly programmed to your VIN; the final vehicle-side integration is the responsibility of the installer.
Direct Replacement for Multiple Part Numbers:
This module is a verified replacement for the following GM part numbers: 12692068, 12704476, 12686382, 12674052, 12674472, and 12678815.
Verified Vehicle Fitment:
- ✔ 2017 Cadillac XTS (3.6L Twin Turbo)
- ✔ 2017 Cadillac ATS (3.6L Twin Turbo)
- ✔ 2017 Chevrolet Tahoe
- ✔ 2017 Chevrolet Suburban 1500
- ✔ 2016-2018 Chevrolet Silverado 1500 Pickup (check ID)
- ✔ 2017 Chevrolet Corvette
- ✔ 2016-2018 GMC Sierra 1500 Pickup (check ID)
- ✔ 2017-2018 GMC Sierra Denali 1500 (check ID)
Frequently Asked Questions
Why do I need to provide my VIN?
Your VIN is essential because it allows us to load the exact, correct factory software and calibrations for your vehicle’s specific engine, transmission, and options. This ensures the 2017 Yukon Engine Module works perfectly out of the box and communicates correctly with all other systems.
What is a ‘theft deterrent relearn’ and why is it necessary?
The theft deterrent system links your ECM, ignition key, and other modules. When you replace the ECM, this link is broken. The relearn procedure re-establishes this secure connection, telling the vehicle that the new ECM is authorized. Without this step, the system assumes a theft is in progress and will prevent the engine from starting.
Can I perform the relearn procedures myself?
While some manual relearn procedures exist for older vehicles, for this model year it is strongly recommended to use a professional diagnostic tool with a subscription to GM’s programming software (Tis2web/Techline Connect). This ensures the process is done correctly and avoids potential complications. We advise having a qualified shop perform the final installation steps.
Is this ECM compatible with other part numbers?
Yes, this module is a direct replacement for several part numbers, including 12692068, 12704476, 12686382, 12674052, and 12678815. Ordering this part ensures you receive a compatible unit for any of these original numbers.
What happens if I install the ECM without doing the relearn?
If you install the module and do not perform the mandatory theft deterrent relearn, the engine will not start. The vehicle’s security system will immobilize the engine until the procedure is successfully completed.