Restore Peak Performance to Your 2017 GMC Yukon
Is your 2017 GMC Yukon suffering from perplexing issues like a persistent check engine light, stalling, poor fuel economy, or a no-start condition? These are classic signs of a failing Engine Control Module (ECM), the central computer that governs your vehicle’s engine performance. A faulty ECM can disrupt everything from fuel delivery and ignition timing to transmission shifting, making your vehicle unreliable and frustrating to drive. This genuine GM Engine Control Module, part number 12678815, is the definitive solution to restore your truck’s factory performance and reliability.
This isn’t just a replacement part; it’s a comprehensive service. We take the hassle out of the repair by pre-programming the module to your vehicle’s specific 17-digit Vehicle Identification Number (VIN) before it ships. This ensures that the ECM is loaded with the latest GM software updates and calibrations tailored specifically for your Yukon’s configuration, eliminating the need for an expensive trip to the dealership for programming.
Common Symptoms of a Failing ECM
- ✔ Persistent Check Engine Light (CEL) with various fault codes
- ✔ Engine stalling, stumbling, or misfiring
- ✔ Unexplained decrease in fuel efficiency
- ✔ Complete no-start or difficult starting conditions
- ✔ Loss of communication with diagnostic scan tools
- ✔ Erratic or harsh transmission shifting
- ✔ Reduced engine power and poor acceleration
Why Choose Our Programmed 2017 Yukon ECM?
When you order this 2017 Yukon ECM, you’re getting a direct-fit, OEM component that is ready for installation. We handle the complex programming so you can focus on the physical replacement. The process is simple: place your order, provide us with your VIN, and we’ll ship a module that’s plug-and-play, pending the final security relearn. This module is also a direct replacement for several other part numbers, including 12692068, 12704476, 12686382, 12674052, and 12674472, making it a versatile solution for a wide range of GM trucks and SUVs.
Important Installation Note: The buyer is responsible for performing all necessary post-installation procedures. This includes the mandatory Vehicle Theft Deterrent (VTD) relearn. Depending on your vehicle’s specific needs, other procedures like a crankshaft variation relearn or injector flow rate programming may also be required. These are standard procedures when replacing an ECM and must be completed by the end-user or their technician to ensure proper vehicle function.
Frequently Asked Questions
Do I need to program this 2017 Yukon ECM?
No. We pre-program the module to your vehicle’s VIN before shipping. It arrives ready for installation and the final security relearn procedure.
What information do you need from me?
After you place your order, you will need to provide us with your vehicle’s complete 17-digit VIN. This is crucial for us to load the correct software and calibrations for your specific vehicle.
My vehicle won’t start after I installed the new ECM. Is it defective?
No, this is expected behavior. You must perform the Vehicle Theft Deterrent (VTD) relearn to sync the new ECM with your vehicle’s security system. Once this is done, the vehicle will start.
What tools are needed for the final installation steps?
A qualified technician will need a GM-specific diagnostic tool (like a GM MDI or Tech 2) with an active subscription to GM’s Tis2Web or Techline Connect service to perform the VTD relearn and any other necessary setup procedures.
Will this part fit other vehicles besides the 2017 Yukon?
Yes, this ECM fits a wide range of GM vehicles, including the Escalade, Tahoe, Suburban, Sierra, Silverado, and more from similar model years. Please verify the part number or consult the fitment list on this page.