Is Your 2017 Yukon Experiencing Engine Problems?
The Engine Control Module (ECM), often called the engine computer, is the central command center for your vehicle’s engine. It meticulously manages everything from fuel injection and ignition timing to emissions systems and transmission shifting. When the ECM begins to fail, it can cause a cascade of confusing and frustrating problems that can be difficult to diagnose. If you’re dealing with an intermittent check engine light, poor performance, or a no-start condition, a faulty ECM could be the culprit. This replacement Engine Control Module, part number 12674052, is the definitive solution to restore your vehicle’s performance and reliability.
From the Diagnostic Bay
We once had a 2017 Sierra 1500 (which uses a similar ECM) come into the shop with a persistent random misfire code (P0300) and poor fuel economy. The owner had already replaced all the spark plugs, ignition coils, and even the mass airflow sensor, spending hundreds of dollars with no success. After hooking up our diagnostic tools, we noticed erratic data from the fuel trim and ignition timing parameters. The sensor inputs were stable, but the ECM’s outputs were inconsistent. This pointed directly to an internal processing failure in the original engine computer. We installed a VIN-programmed ECM, performed the necessary relearn procedures, and the truck ran perfectly. It’s a classic case of how a failing module can mimic other component failures, making accurate diagnosis essential.
Common Symptoms of a Failing ECM
- ✔ Persistent Check Engine Light (CEL) that won’t clear or returns immediately.
- ✔ Engine stalling, stumbling, or running rough for no apparent reason.
- ✔ A complete no-start condition where the engine cranks but will not fire up.
- ✔ Noticeable decrease in fuel efficiency.
- ✔ Unexplained loss of power and poor acceleration.
- ✔ Harsh or erratic automatic transmission shifting.
- ✔ Communication errors with diagnostic scan tools.
- ✔ Trouble codes related to module communication or internal processor failure.
The Solution: A VIN-Programmed 2017 Yukon ECM
Don’t settle for a generic, one-size-fits-all module. This ECM is specifically prepared for your vehicle. When you place your order, you provide us with your vehicle’s 17-digit VIN. We use that information to access the official GM service database and flash the module with the latest, most up-to-date software calibration for your exact vehicle configuration. This ensures perfect compatibility and optimal performance, right out of the box. This module is a direct replacement for the following part numbers: 12692068, 12704476, 12686382, 12674052, 12674472, and 12678815.
Important: Installation and Relearn Procedures
Installing a new ECM in a modern GM vehicle is more than just a physical swap. For security reasons, the new module must be synchronized with your vehicle’s anti-theft system. This is known as the Vehicle Theft Deterrent (VTD) relearn procedure.
NOTICE: Upon installation, if the vehicle does not start, this VTD relearn MUST be performed. This procedure requires a compatible diagnostic tool with access to GM’s programming system, such as Tis2web or Techline Connect. This is not something that can be bypassed. It is the responsibility of the installer to complete this step. Additionally, other procedures like a crankshaft position variation relearn or injector flow rate programming may be necessary depending on your vehicle’s specific needs to ensure peak performance.
Vehicle Fitment Information
This Engine Control Module is compatible with a wide range of GM trucks, SUVs, and cars. Please verify your vehicle and options below:
- ESCALADE & ESCALADE ESV: 2017
- TAHOE: 2017
- YUKON & YUKON XL 1500: 2017
- SUBURBAN 1500: 2017
- SILVERADO 1500 PICKUP: 2016 (ID 12674472), 2017, 2018 (ID 12686382)
- SIERRA 1500 PICKUP: 2016 (ID 12674472), 2017, 2018 (ID 12686382)
- SIERRA DENALI 1500: 2017, 2018 (ID 12686382)
- CORVETTE: 2017
- CTS: 2017 (6.2L Supercharged or 3.6L Twin Turbo VIN 8)
- XTS: 2017 (3.6L VIN 8)
- ATS: 2017 (3.6L VIN Y)
Frequently Asked Questions
Why do you need my VIN?
Your Vehicle Identification Number (VIN) allows us to download the exact factory software and calibrations for your specific vehicle. This includes details about the engine, transmission, emissions equipment, and other options, ensuring the ECM works perfectly upon installation.
What is a ‘theft relearn’ and can I do it myself?
The theft relearn is a security procedure that syncs the new ECM to your vehicle’s immobilizer system. Without it, the vehicle will not start. This process typically requires professional-grade scan tools with access to GM’s software (like Tis2web/Techline Connect) and is not something that can be done with basic code readers.
Will this part fix my check engine light?
If the check engine light and other symptoms are caused by a faulty ECM, this part will be the solution. However, it is crucial to have the vehicle properly diagnosed first, as other failing sensors or wiring issues can cause similar symptoms.
My original part number is slightly different but my vehicle is listed. Will this work?
Yes. Manufacturers often update and supersede part numbers over time. This module, when programmed to your VIN, is a correct replacement for all the part numbers listed in the description, including 12692068, 12704476, 12686382, 12674472, and 12678815.
What if the vehicle doesn’t start right after I install the module?
The most common reason for a no-start condition after installation is the need for the Vehicle Theft Deterrent (VTD) relearn. This security procedure is mandatory and must be completed by the installer.