2017 XTS Engine Control Module 12674052 | Programmed to Your VIN

Is Your Cadillac XTS Running Rough or Showing a Check Engine Light?

If you’re dealing with frustrating issues like erratic engine behavior, poor fuel economy, a persistent check engine light, or even a no-start condition in your 2017 Cadillac XTS, a failing Engine Control Module (ECM) is often the culprit. As the brain of your vehicle’s engine, the ECM controls everything from fuel injection and ignition timing to emissions systems. When it fails, the symptoms can be widespread and difficult to diagnose. I’ve seen countless vehicles in my shop where owners have replaced multiple sensors, only to find the root cause was the ECM itself.

The Simple, Reliable Solution: A VIN-Programmed ECM

Forget the hassle and high cost of a dealership visit. We provide a direct, effective solution. This Engine Control Module is professionally programmed with the latest GM software updates specifically for your vehicle’s VIN. This critical step ensures that the module communicates perfectly with your XTS’s existing systems, restoring its original performance and efficiency. Just provide us with your VIN during checkout, and we handle the complex programming before it even ships.

Common Symptoms of a Failing ECM:

• ✔ Persistent Check Engine Light (CEL) with various fault codes
• ✔ Engine stalling, misfiring, or hesitation
• ✔ Noticeable decrease in fuel efficiency
• ✔ Transmission shifting problems
• ✔ Complete no-start or intermittent starting issues

Installation and Post-Installation Requirements

Installing your new 2017 XTS Engine Control Module is straightforward, but a critical final step is required to sync it with your vehicle’s anti-theft system. This is an industry-standard security measure on all modern GM vehicles.

1. Safety First: Always disconnect the negative battery terminal before beginning any work on your vehicle’s electrical system.
2. Locate and Replace: The ECM on the 2017 XTS with the 3.6L LF3 engine is typically located in the engine compartment. Carefully disconnect the wiring harnesses and remove the mounting bolts to swap the old module with your new one.
3. Perform Security Relearn: After installation, the vehicle may not start. This is normal. A Vehicle Theft Deterrent (VTD) relearn must be performed using a compatible GM diagnostic tool like Tis2web or Techline Connect. This procedure pairs the new ECM to your car’s security system.
4. Additional Setups: Depending on your vehicle’s specific configuration, other procedures like a Crankshaft Position Variation Relearn or injector flow rate programming may be necessary to ensure optimal performance. These are standard procedures for any professional technician with the correct equipment.

Please Note: The buyer is responsible for ensuring these post-installation procedures are completed by a qualified technician with the appropriate tools. We guarantee the module is correctly programmed to your VIN; the final vehicle integration is the responsibility of the installer.

Guaranteed Fitment and Compatibility

This module is a direct replacement for several original equipment part numbers, ensuring broad compatibility across a range of GM cars and trucks. It is guaranteed to be a compatible replacement for the following part numbers:

• 12692068
• 12704476
• 12686382
• 12674052
• 12674472
• 12678815

This ECM fits a wide variety of models, including but not limited to the 2017 Cadillac XTS with the 3.6L Twin Turbo engine (VIN 8, RPO code LF3), as well as various Escalade, Tahoe, Yukon, CTS, Corvette, Sierra, and Silverado models. Please verify the part number on your original module to confirm fitment.