Restore Peak Performance to Your GM Vehicle
Is your Yukon XL, Sierra, or Tahoe suffering from frustrating and unpredictable issues like a persistent check engine light, rough idling, poor fuel economy, or a no-start condition? These are classic signs of a failing Engine Control Module (ECM), the central computer that manages your vehicle’s performance. This pre-programmed ECM is the definitive, reliable solution to restore your vehicle’s power, efficiency, and dependability, getting you back on the road with confidence.
Common Symptoms & Your Direct Solution
A failing ECM can manifest in numerous ways, often leading to a dead-end diagnosis. If you’re experiencing any of the following, this module is the component you need:
- Erratic engine performance, stalling, or misfires
- Poor acceleration and throttle response
- Reduced fuel efficiency
- Transmission shifting problems
- Check Engine Light with communication codes (U-codes) or sensor circuit faults
- Complete failure to start the engine
Instead of wrestling with a faulty unit, this professionally programmed 2017 Yukon XL 1500 ECM 12704476 arrives ready for installation. We take the guesswork out of the repair by flashing the module with the latest GM calibrations specifically matched to your vehicle’s VIN.
Features & Tangible Benefits
- ✔ VIN-Specific Programming: We flash the module with your vehicle’s exact VIN, ensuring all systems communicate perfectly and all factory-intended parameters are restored.
- ✔ Latest GM Software Updates: Your ECM will be loaded with the most current factory software, often correcting underlying drivability issues and improving overall efficiency beyond the original calibration.
- ✔ Direct-Fit Replacement: This unit is a direct replacement for multiple part numbers, including 12692068, 12704476, and 12686382, guaranteeing a perfect physical fit.
- ✔ Cost-Effective Repair: Avoid the high costs and scheduling delays of a dealership visit. This is a professional-grade solution that saves you time and money.
- ✔ Peace of Mind Protection: This unit is backed by our one-year replacement warranty.
Expert Insight: The Brain of Your Vehicle
Think of the ECM as the brain of your truck or SUV. It processes thousands of data points every second from sensors all over the vehicle to manage everything from fuel injection and spark timing to transmission shifts and emissions. When it fails, the entire system is compromised. That’s why simply installing a used, non-programmed module from another vehicle will not work. Our VIN-programming service ensures this new ‘brain’ is perfectly synced to your vehicle’s specific ‘nervous system,’ including its factory-installed security features. The required post-installation theft relearn is a crucial step that pairs the module to your specific key and anti-theft system, a standard procedure for modern vehicle security.
By choosing this precision-programmed 2017 Yukon XL 1500 ECM 12704476, you’re not just buying a part; you’re investing in a reliable and lasting fix that restores the integrity and performance of your vehicle’s complex electronic systems.
Frequently Asked Questions
What do I need to do after placing my order?
After your purchase is complete, you must provide us with your vehicle’s 17-digit Vehicle Identification Number (VIN). We cannot program and ship your ECM without it. You can typically find your VIN on the driver’s side dashboard (visible through the windshield) or on the sticker in the driver’s side door jamb.
Is this a simple plug-and-play installation?
The physical installation is a direct swap. However, for security reasons, a ‘Vehicle Theft Deterrent Relearn’ procedure is often required after installation. This syncs the new ECM to your vehicle’s anti-theft system. Other vehicle-specific relearns, like for the crankshaft position sensor, may also be necessary.
What is required to perform the theft relearn procedure?
The theft relearn and other setup procedures must be performed by a qualified technician using the official GM programming system, such as Tis2web or Techline Connect. This is the responsibility of the installer.
Will this ECM fix my check engine light?
If the check engine light and associated symptoms are caused by a faulty ECM, this part is the correct solution. It is crucial to have the vehicle properly diagnosed to confirm the original ECM is the point of failure before ordering. This module will resolve issues directly related to the engine computer itself.
Does this part fit vehicles other than the 2017 Yukon XL 1500?
Yes. This ECM is compatible with a wide range of GM vehicles, including the Cadillac Escalade, Chevy Tahoe, Suburban, Silverado 1500, and GMC Sierra 1500 from various model years. Please refer to the full fitment list on this page to confirm compatibility with your specific vehicle.
How do I know if my original ECM part number matches?
This unit replaces several common GM part numbers, including 12692068, 12704476, 12686382, 12674052, 12674472, and 12678815. If your original module has any of these numbers, this is the correct replacement.