Is Your 2017 Corvette Suffering from Frustrating Engine Problems?
There’s nothing worse than when your high-performance machine isn’t performing. If your C7 Corvette is throwing a check engine light, running rough, hesitating, or even refusing to start, a failing Engine Control Module (ECM) is a very likely culprit. As the central computer for your engine, its health is critical. When it fails, it can cause a cascade of confusing and difficult-to-diagnose issues. Stop chasing symptoms and replace the core component with a reliable, correctly programmed solution.
The Smart Solution: A VIN-Programmed ECM Ready for Installation
This isn’t just a replacement part; it’s a comprehensive fix. We take a genuine GM ECM and professionally program it to your Corvette’s specific Vehicle Identification Number (VIN) before it ever leaves our facility. This crucial step loads the latest, most stable software from General Motors, ensuring your vehicle operates exactly as the engineers intended. This process eliminates the need for an expensive trip to the dealership for initial programming, saving you significant time and money.
Expert Pro Tip: A customer’s 2017 Corvette came into my shop last month with a persistent misfire on cylinder 5 that they couldn’t solve. They had already replaced the spark plug, ignition coil, and fuel injector. After confirming the new parts were good, I used an oscilloscope to check the signal from the ECM to the injector. The signal was weak and erratic. This confirmed the fault wasn’t the injector itself, but the driver circuit inside the original ECM. A new, programmed module fixed the issue instantly. Always verify the control signal before replacing expensive components multiple times.
Common Symptoms of a Failing 2017 Corvette Engine Control Module:
- โ Persistent Check Engine Light (CEL) with various communication or sensor codes.
- โ Engine stalling, stumbling, or hesitating during acceleration.
- โ Noticeable decrease in fuel economy and overall performance.
- โ Vehicle entering a “limp mode” with reduced power.
- โ Complete no-start or intermittent starting condition.
- โ Communication errors with diagnostic scan tools.
Installation and Final Setup Guide
Installing your new ECM is straightforward, but a final security step is required. For the 2017 Corvette, the ECM is located under the passenger side (RH) cowl panel, beneath the dashboard.
- Safety First: Always disconnect the negative terminal from your vehicle’s battery before beginning work.
- Locate and Access: Carefully remove the necessary trim panels to access the ECM under the RH side of the cowl/dash area.
- Disconnect and Remove: Gently unclip and disconnect the wiring harnesses from the old ECM. Then, unbolt and remove the module from its mounting bracket.
- Install New Module: Mount the new, pre-programmed ECM in place and securely reconnect all wiring harnesses. Ensure they click into place.
- Reconnect Battery: Re-attach the negative battery terminal.
- CRITICAL – Theft Relearn: After installation, the vehicle’s anti-theft system must be synchronized with the new ECM. If the car does not start, this is the reason. This procedure requires a GM-compatible scan tool with access to their programming software (such as Tis2web or Techline Connect). This is a standard procedure for any professional technician or well-equipped independent shop.
- Additional Relearns: Depending on your vehicle’s specific condition, other procedures like a Crankshaft Variation Relearn may be necessary to ensure optimal performance.
This Module is a Direct Replacement for the Following Part Numbers:
This ECM, part number 12674052, is also a direct replacement for service numbers: 12692068, 12704476, 12686382, 12674472, and 12678815.
Verified Vehicle Fitment:
This module is compatible with a wide range of GM vehicles. Please verify your model and options below:
- 2017 Cadillac Escalade & Escalade ESV
- 2017 Cadillac XTS (3.6L Twin Turbo, VIN 8, opt LF3)
- 2017 Cadillac CTS (6.2L Supercharged or 3.6L Twin Turbo)
- 2017 Cadillac ATS (3.6L, VIN Y, opt LF4)
- 2017 Chevrolet Corvette (Located RH cowl under dash)
- 2017 Chevrolet Tahoe & Suburban 1500
- 2017 Chevrolet Silverado 1500 Pickup
- 2016 Chevrolet Silverado 1500 Pickup (ID 12674472)
- 2018 Chevrolet Silverado 1500 Pickup (ID 12686382)
- 2017 GMC Yukon & Yukon XL 1500
- 2017 GMC Sierra 1500 & Sierra Denali 1500
- 2016 GMC Sierra 1500 Pickup (ID 12674472)
- 2018 GMC Sierra 1500 & Sierra Denali 1500 (ID 12686382)