Is Your GM Truck or SUV Experiencing Frustrating Engine Problems?
If your 2017 GMC Yukon, Chevy Tahoe, Cadillac Escalade, or another compatible GM vehicle is suffering from issues like stalling, erratic idling, a persistent check engine light, or a complete no-start condition, a failing Engine Control Module (ECM) is a very likely culprit. The ECM is the brain of your engine, managing everything from fuel delivery and ignition timing to emissions controls. When it fails, it can cause a cascade of problems that are often difficult to diagnose, leaving you stranded and facing a costly dealership repair.
The Direct Solution: A VIN-Programmed Engine Computer
This Engine Control Module is the reliable, straightforward solution to get your vehicle running properly again. We take the guesswork out of the repair by pre-programming the module specifically for your vehicle using your VIN. This ensures it arrives with the latest, most stable software updates from General Motors, tailored to your exact configuration.
- โ VIN-Specific Programming: We flash the module with your vehicle’s VIN to ensure perfect communication and function.
- โ Latest GM Calibrations: Arrives with the newest software updates for optimal performance and efficiency.
- โ Direct Replacement: Engineered to be a direct fit for original part numbers 12692068, 12704476, 12686382, 12674052, 12674472, and 12678815.
- โ Restores Original Function: Solves common failure symptoms like no-start, poor fuel economy, and false sensor codes.
Expert Pro Tip: Check Before You Replace
In my 20+ years as a technician, I’ve seen countless ECMs replaced unnecessarily. Before condemning your module, perform a “wiggle test.” With the key on, gently wiggle the main wiring harness connectors at the ECM. If the engine stumbles, stalls, or warning lights flicker, you may have a poor connection or a corroded pin, not a failed module. Cleaning the connector pins with a dedicated contact cleaner can sometimes save you hundreds of dollars. This simple check takes five minutes and can pinpoint the true source of the problem.
Critical Information: Post-Installation Procedures
This is not a simple plug-and-play part for all situations. Because this ECM is a critical part of your vehicle’s security system, a Vehicle Anti-Theft System (VATS/Passlock) relearn is often required after installation. If the vehicle cranks but does not start, the security system must be synchronized to the new module.
This procedure requires a professional scan tool with GM-specific software, such as GM Tis2web or Techline Connect. It is the buyer’s responsibility to have access to these tools or a qualified technician who does. Additionally, other procedures may be necessary depending on your vehicle, including:
- Crankshaft Position Variation Relearn
- Fuel Injector Flow Rate Programming
- Idle Learn Procedure
We provide a module correctly programmed to your VIN; the final integration and relearn procedures are the responsibility of the installer.
Installation Guide for your 2017 Yukon Engine Control Module
- Safety First: Disconnect the negative terminal from your vehicle’s battery and secure it away from the post to prevent accidental contact.
- Locate the ECM: On most GM trucks and SUVs like the Yukon and Silverado, the ECM is located in the engine compartment on the driver’s side, often near the air filter housing.
- Disconnect the Harnesses: Carefully release the locking tabs on the electrical connectors and pull them straight out from the module. Do not force them. Inspect the connectors for any signs of corrosion or damage.
- Remove the Old Module: Unbolt the old ECM from its mounting bracket. There are typically a few 10mm bolts holding it in place.
- Install the New Module: Mount the new ECM onto the bracket 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 Relearn Procedures: Attempt to start the vehicle. If it does not start, proceed with the required Vehicle Anti-Theft System relearn using a compatible GM diagnostic tool as mentioned above.