Is Your C7 Corvette Running Rough? Restore Its Peak Performance.
If your 2014, 2015, or 2016 Corvette is suffering from perplexing issues like a persistent check engine light, poor fuel economy, stalling, or a no-start condition, the root cause is often a failing Engine Control Module (ECM). The ECM is the brain of your vehicle’s engine, managing everything from fuel injection and ignition timing to emissions controls. When it fails, the heart of your high-performance machine can’t function correctly. Don’t let a faulty computer sideline your Corvette. This genuine GM Engine Control Module, part number 12669318, is the definitive solution to restore your vehicle’s factory performance and reliability.
We take the guesswork and hassle out of the replacement process. Unlike a generic module from a parts store, this ECM comes professionally programmed to your Corvette’s specific Vehicle Identification Number (VIN). This critical step ensures that the module communicates flawlessly with all other systems in your car, from the transmission to the anti-lock brakes. We load the latest GM-authorized software updates, which can often resolve underlying drivability issues you may not have even known were software-related. This is a true plug-and-play solution designed to get you back on the road with confidence.
From the Diagnostic Bay
We had a 2015 Corvette Z06 come into the shop with a bizarre, intermittent misfire that only happened under light throttle. The owner had already replaced plugs, wires, and even an O2 sensor with no luck. The check engine light would flash and then disappear, leaving no stored codes. After hours of diagnostics, we hooked up a scope to the injector drivers at the ECM. We found that the signal for cylinder #3 was dropping out unpredictably. We swapped in a pre-programmed ECM, and the problem vanished instantly. The original module had an internal fault that was just starting to fail, causing a ghost issue that was impossible to track down with a standard scanner. It’s a perfect example of how a failing ECM can manifest in ways that mimic other component failures.
Diagnosing a Faulty 2014-2016 Corvette Engine Module
A failing ECM can create a wide range of symptoms that can be easily misdiagnosed. If your vehicle is experiencing any of the issues below, it’s a strong indicator that your engine computer may need replacement. This direct-replacement 2014-2016 Corvette Engine Module is engineered to resolve these exact problems.
Common Symptoms of a Failing ECM
- ✔ Check Engine Light: The most common sign. The light may be on constantly or illuminate intermittently. Codes related to sensor circuits, communication errors (U-codes), or processor faults are strong indicators.
- ✔ Engine Stalling or Misfiring: The engine may stall for no reason, either while driving or at idle. You may also notice rough running, hesitation, or misfires.
- ✔ No-Start Condition: The engine cranks but refuses to start. This can happen if the ECM is not properly controlling the fuel pump or ignition system.
- ✔ Poor Performance and Fuel Economy: A failing ECM can’t efficiently manage the engine’s fuel and air mixture, leading to a noticeable drop in power and an increase in fuel consumption.
- ✔ Transmission Shifting Problems: The ECM works closely with the Transmission Control Module (TCM). A faulty ECM can send incorrect data, leading to harsh shifts, delayed engagement, or the transmission going into a limp mode.
- ✔ Intermittent Electrical Issues: Fans running after the car is off or other strange electrical behavior can sometimes be traced back to a failing computer.
Guaranteed Compatibility and Simple Installation
This module is a direct replacement for a wide range of GM vehicles, not just the Corvette. It is compatible with multiple part numbers, including 12692067, 12676230, 12656993, 12662034, and more. While it is the correct part for the 2014-2016 Corvette, it also fits models like the Silverado, Sierra, Camaro, CTS, and Escalade. Our VIN-programming service ensures it functions perfectly for whichever vehicle you have. After purchase, simply provide us with your VIN, and we handle the rest. The module will arrive ready for installation. In most cases, you will only need to perform a simple security relearn procedure (often called a ‘key relearn’ or ‘anti-theft relearn’), which can typically be done in your driveway without special tools.
Frequently Asked Questions
Do I need to do any programming myself?
No. We handle all the programming before the part is shipped. We use your VIN to load the correct GM-certified software and updates, making it ready for installation right out of the box.
What is a security relearn procedure?
This is a simple procedure that syncs the new ECM to your vehicle’s anti-theft system and keys. It usually involves turning the key to the ‘ON’ position for 10-15 minutes, then off, and repeating this sequence three times. Specific instructions for your vehicle can be easily found online or in your owner’s manual.
Will this fix my specific check engine light codes?
This ECM will resolve any issues and codes directly caused by a faulty module, such as internal processor faults or communication errors. However, it will not fix problems caused by other failed components like a bad oxygen sensor or a wiring short. It is essential to diagnose your vehicle properly before ordering.
Where is the ECM located on a 2014-2016 Corvette?
On the C7 Corvette, the Engine Control Module is typically located on the right-hand side, under the cowl panel near the base of the windshield. Access may require removing the cowl cover.
Is this compatible with other GM vehicles?
Yes. This ECM, part number 12669318, and its alternates are used in a wide variety of GM cars and trucks from this era, including the Silverado/Sierra 1500, Camaro, Cadillac ATS/CTS/XTS, and Tahoe/Yukon. Our VIN programming ensures it works perfectly for your specific application.