Is Your Yukon XL Running Rough, Stalling, or Refusing to Start?
As a technician with over two decades of experience under the hood, I’ve seen firsthand how a failing Engine Control Module (ECM) can bring a powerful truck like your 2017 Yukon XL 1500 to a grinding halt. You might be dealing with a persistent Check Engine Light, erratic engine behavior, poor fuel economy, or a frustrating no-start condition. These aren’t just annoyances; they’re signs that the brain of your engine is struggling. This module is the definitive solution to restore your vehicle’s performance and reliability.
The Smart, Simple Solution: VIN-Programmed & Ready for Installation
Forget the hassle and high cost of a dealership visit. We take the guesswork out of the repair by pre-programming this ECM specifically for your vehicle. Simply provide us with your Yukon’s Vehicle Identification Number (VIN) after your purchase, and our experts will flash the module with the latest, most stable software updates directly from GM. This ensures perfect communication between the ECM and all your truck’s systems.
- โ VIN-Specific Programming: We load your vehicle’s exact calibration files for seamless integration.
- โ Latest GM Software: Benefit from the most recent drivability and performance enhancements from the manufacturer.
- โ Direct-Fit Replacement: Guaranteed compatibility with part numbers 12704476, 12692068, 12686382, and more.
- โ Resolves Common Failures: Effectively corrects issues like false sensor codes, harsh shifting, and intermittent stalling.
Expert Pro Tip: Check Your Connections Before You Swap
Before you condemn your old ECM, take 10 minutes to inspect the main electrical connectors at the module. Over the years, I’ve seen dozens of cases where a loose pin, corrosion, or a frayed wire in the harness was the real culprit. A simple wiggle test or a quick spray with electronics cleaner on the pins can sometimes save you from replacing a perfectly good part. It’s a quick check that has saved my customers hundreds of dollars.
Important Note on Post-Installation Procedures
This is a critical step for a successful repair. While we handle the complex programming, your vehicle’s security system needs to recognize the new module. If the truck does not start after installation, a Vehicle Theft Deterrent System Relearn must be performed. This procedure requires a professional scan tool with GM-specific software (like Tis2web or Techline Connect) and is the responsibility of the installer. Other vehicle-specific relearns, such as for the crankshaft position sensor or fuel injectors, may also be necessary to ensure optimal performance.
Easy Installation Guide for Your 2017 Yukon XL 1500 ECM
- Safety First: Disconnect the negative terminal from your vehicle’s battery and secure it away from the post.
- Locate the ECM: On most 2017 Yukon XL models, the ECM is found in the engine compartment on the driver’s side (LH front).
- Disconnect Connectors: Carefully release the locking tabs and unplug the electrical wiring harnesses from the old module. Inspect them for any damage or corrosion.
- Remove Old Module: Unbolt the old ECM from its mounting bracket.
- Install New Module: Mount your new, pre-programmed ECM in place and securely fasten the bolts.
- Reconnect Everything: Plug the wiring harnesses back into the new module until they click firmly into place. Reconnect the negative battery terminal.
- Perform Relearns: Follow the required GM procedures for the Theft Deterrent System and any other necessary relearns to complete the job.
Guaranteed Fitment for Your GM Vehicle
This module is a direct replacement for several original part numbers, including: 12692068, 12704476, 12686382, 12674052, 12674472, and 12678815. It is confirmed to fit the following vehicles:
- 2017 Cadillac Escalade & Escalade ESV
- 2017 Cadillac XTS (3.6L Twin Turbo)
- 2017 Cadillac CTS (6.2L Supercharged & 3.6L Twin Turbo)
- 2017 Cadillac ATS (3.6L)
- 2017 Chevrolet Corvette
- 2017 Chevrolet Tahoe & Suburban 1500
- 2016-2018 Chevrolet Silverado 1500
- 2017 GMC Yukon & Yukon XL 1500
- 2016-2018 GMC Sierra 1500 & Sierra Denali 1500