2014 – 2016 CTS Engine Control Module 12673195 Programmed to VIN

### Programmed 2014-2016 CTS Engine Module 12673195 \| VIN-Matched ECM   Is your Cadillac, Chevy, or GMC truck acting erratically? Stalling, poor fuel mileage, or a persistent Check Engine Light can often be traced back to a failing Engine Control Module (ECM). As a technician with over two decades of experience under the hood, I’ve seen firsthand how a faulty ECM can turn a reliable vehicle into a source of constant frustration. This isn’t just a part; it’s the central computer for your engine, and when it fails, nothing works right. This module, part number **12673195**, is the definitive solution to restore your vehicle’s performance and reliability. We take the guesswork and extra cost out of the repair. Unlike a generic part from a local store, this ECM arrives at your door pre-programmed with the latest official GM software. We use your vehicle’s VIN to ensure the calibration is a perfect match, just like the dealership would do. This means no extra trips for expensive programming—it’s a true plug-and-play solution designed to get you back on the road quickly and confidently. #### Case Study: A Tricky Diagnosis A customer brought in a 2015 Silverado 1500 with a complaint that stumped two other shops: intermittent stalling at stoplights and a flashing Check Engine Light with no clear pattern. They had already replaced the throttle body and a few sensors. My scan tool pulled a P0606 (ECM/PCM Processor Fault). While this code often points directly to the module, it can also be caused by wiring or power supply issues. After an hour of meticulously checking the harness, grounds, and power feeds to the ECM, everything tested perfectly. This confirmed my initial suspicion. The internal processor of the original ECM was failing under certain conditions. We ordered a VIN-programmed module, and the swap took less than 30 minutes. The truck ran flawlessly, and the customer was relieved to have a final, definitive fix. ## Is Your Vehicle Showing These Red Flags? A failing ECM can cause a wide range of symptoms. If you’re noticing any of the following, it’s a strong indicator that your engine’s computer needs attention. In my shop, these are the classic signs we look for: - ✔ Check Engine Light is on with codes like P0601 (Internal Control Module Memory Check Sum Error), P0606 (ECM Processor Fault), or U0100 (Lost Communication With ECM). - ✔ The engine cranks but refuses to start. - ✔ Unexplained drops in fuel economy. - ✔ The engine stalls, stumbles, or runs rough for no apparent reason. - ✔ Noticeable loss of power and poor acceleration. - ✔ Automatic transmission shifting erratically or harshly. - ✔ Communication issues with diagnostic scan tools. ## A Straightforward Guide to Your 2014-2016 CTS Engine Module Installation Replacing your ECM is a manageable job for a DIYer with basic tools. Our pre-programming service eliminates the most difficult step. Just follow this general guide for a successful installation. 1. **Safety First:** Disconnect the negative terminal from your vehicle’s battery to prevent any electrical shorts. 2. **Locate the ECM:** On most compatible vehicles (like the Silverado/Sierra or CTS), the ECM is located in the engine compartment, often on the driver’s side fender or firewall. Refer to your vehicle’s service manual for the exact position. 3. **Disconnect Connectors:** Carefully release the locking tabs on the electrical wiring harnesses and pull them straight out from the module. Avoid pulling on the wires themselves. 4. **Remove the Old Module:** Unbolt the old ECM from its mounting bracket. Keep the hardware, as you’ll need it to install the new one. 5. **Install the New Module:** Mount your new, pre-programmed ECM onto the bracket and secure it with the original bolts. 6. **Reconnect Everything:** Firmly plug the wiring harnesses back into the new ECM until they click into place. Reconnect the negative battery terminal. 7. **Final Steps:** Some vehicles may require a security relearn procedure or crankshaft position sensor relearn, which can often be done without special tools. Check your service manual for any specific post-installation steps. Start the vehicle and let it idle for a few minutes to confirm the repair. ## Verified Vehicle Compatibility This module is a direct-fit replacement for a wide range of GM vehicles. Please verify your part number or match your vehicle from the list below. This unit is compatible with part numbers: **12692067**, **12676230**, **12656993**, **12662034**, **12672537**, **12673195**, **12663391**, **12672963**, and **12669318**. **Cadillac:** ATS (2014-2016, 3.6L) CTS (2014-2016, 3.6L / 6.2L) XTS (2014-2016, 3.6L) Escalade / ESV (2015-2016) **Chevrolet:** Camaro (2016, 6.2L) Colorado (2015-2016, 3.6L) Corvette (2014-2016) Silverado 1500 (2014-2016) Suburban (2015-2016) Tahoe (2015-2016) **GMC:** Canyon (2015-2016, 3.6L) Sierra 1500 / Denali 1500 (2014-2016) Yukon / Yukon XL (2015-2016) ### Frequently Asked Questions **How does the VIN programming work?** After you complete your purchase, you will need to send us your 17-digit Vehicle Identification Number (VIN). Our technicians use this VIN to load the exact, latest GM-certified software and calibrations for your specific vehicle onto the module before shipping it. **Is this a plug-and-play part?** Yes, for the vast majority of vehicles. Because we program it to your VIN, it eliminates the need for a trip to the dealership for software flashing. In some cases, a simple security or crankshaft position relearn procedure may be necessary, which is detailed in most service manuals. **Will this fix my Check Engine Light?** If the Check Engine Light is caused by an internal failure of the ECM (like codes P0601 or P0606), this part is the correct fix. It’s crucial to properly diagnose the issue first, as other problems like faulty sensors or wiring can also trigger a warning light. **Do I need to send my old ECM (core) back?** No core charge or return is required for this module. You can keep or recycle your old part. **Is this a new or used part?** This is a high-quality, tested, and verified recycled OEM part that has been inspected and programmed to function to factory specifications. It provides the same reliability as a new dealer part at a fraction of the cost. Please enter it in the payment notes and save to ensure we receive it. Orders without a VIN within our 2-business-day handling period may be canceled, as programming cannot proceed without it. ### Shipping - **Processing Time:** Reliably shipped within 2-3 business days. ### Warranty Enjoy peace of mind with a **one-year replacement warranty** on this part, effective from the date you receive it. Labor costs are not covered. If the part fails within the warranty period, we’ll replace it with a comparable unit or refund your purchase price, ensuring a hassle-free experience. **Return Address:** **Highway71autoparts** **9131 Highway 71 NE** **Spicer, MN, 56288**

• Manufacturer Part Number: 12673195
• Country/Region of Manufacture: United States
• Manufacturer Warranty: 1 Year
• Superseded Part Number: 12656993, 12662034, 12663391, 12669318, 12672963, 12673195, 12676230, 12672537
• Genuine OEM: Yes
• Interchange Part Number: 590-08396
• PartNumber: 590
• Model: CTS
• Year: 2016
• Brand: GM
• superseded-part-number: 12676230 12656993 12662034 12672537 12673195,12663391
• Hardware Type: E92