Restore Your GM Vehicle’s Core Performance and Reliability
If you’re dealing with a frustrating Check Engine Light, erratic engine behavior, or a no-start condition in your 2014-2016 Corvette, the root cause is often a failing Engine Control Module (ECM). As the ‘brain’ of your vehicle, a faulty ECM can create a cascade of problems that are difficult to diagnose and expensive to fix at a dealership. I’ve seen it countless times in my 20+ years on the shop floor: a perfectly good engine held hostage by a failing computer. This isn’t just an inconvenience; it affects performance, fuel economy, and your confidence on the road.
This is your direct, reliable solution. We offer a genuine GM Engine Control Module, part number 12656993, that arrives at your door pre-programmed to your specific vehicle. Before we ship, our technicians use your Vehicle Identification Number (VIN) to flash the module with the very latest, most stable software from General Motors. This critical step ensures seamless communication with your vehicle’s other systems and often resolves issues that were present even in the original factory software. By choosing our pre-programmed 2014-2016 Corvette ECM, you bypass the costly programming fees and scheduling delays at the dealership, getting you back on the road faster.
Case Study: The Ghost in the Machine
A client brought in his 2015 Corvette with an intermittent no-start that two other shops couldn’t solve. It would run perfectly for days, then refuse to crank. There were no consistent trouble codes, just a frustrating U0100 (Lost Communication with ECM) that would appear and disappear. After checking all the usual suspects—battery, grounds, starter—I suspected a heat-related internal failure in the ECM. On a hot day, after a long drive, the issue would surface. We swapped in one of these pre-programmed modules, and the problem vanished instantly. The original ECM had a hairline fracture on the circuit board that only separated when it expanded with heat. It’s a classic failure mode that highlights why starting with a reliable, correctly programmed 2014-2016 Corvette ECM is the most efficient fix.
Is Your GM Vehicle Showing These Symptoms?
A failing ECM can manifest in numerous ways. If you’re experiencing any of the following, this module is the likely solution:
- ✔ Persistent Check Engine Light (CEL)
- ✔ Engine stalling, stuttering, or misfiring
- ✔ Complete no-start or intermittent starting issues
- ✔ Poor fuel economy and reduced engine power
- ✔ Inconsistent or harsh transmission shifting
- ✔ Diagnostic Trouble Codes (DTCs) pointing to internal module failure, such as P0601, P0606, or P060A.
- ✔ Communication error codes like U0100 with other vehicle modules.
A Straightforward Guide to Installation
One of the biggest benefits of this module is the ease of installation for both DIY enthusiasts and professional technicians. Since we handle the programming, your job is a simple component swap.
- Safety First: Always disconnect the negative terminal from your vehicle’s battery before beginning any electrical work.
- Locate the ECM: On the 2014-2016 Corvette, the Engine Control Module is located on the passenger side, under the cowl panel near the firewall. On trucks and other models, it’s often in the front left of the engine compartment.
- Disconnect and Remove: Carefully unplug the electrical connectors. They have locking tabs that must be released. Then, unbolt the old module from its mounting bracket.
- Install the New Module: Bolt the new, pre-programmed ECM into place. Firmly reconnect the electrical harnesses, making sure you hear and feel them click securely.
- Final Step: Reconnect the negative battery terminal. In some cases, a security relearn procedure may be required, which can typically be done without special tools. Start the vehicle and enjoy restored performance!
Verified Vehicle Compatibility
This module is a direct replacement for part number 12656993 and is compatible with a wide range of GM vehicles. It also interchanges with part numbers 12692067, 12676230, 12662034, 12672537, 12673195, 12663391, 12672963, and 12669318. Please verify your vehicle from the list below:
CAMARO: 2016 (6.2L)
CANYON / COLORADO: 2015-2016 (3.6L)
CORVETTE: 2014-2016
CTS: 2014-2016 (3.6L, 6.2L)
ESCALADE / ESCALADE ESV: 2015-2016
SIERRA 1500 / SIERRA DENALI 1500: 2014-2016
SILVERADO 1500 PICKUP: 2014-2016
SUBURBAN 1500: 2015-2016
TAHOE: 2015-2016
XTS: 2014-2016 (3.6L)
YUKON / YUKON XL 1500: 2015-2016
Note: Some models have specific ID requirements. Please match your part number or contact us with your VIN to ensure perfect fitment.
Do I need to get this module programmed by a dealer?
Do I need to get this module programmed by a dealer?
No. The main benefit of our service is that we program the module to your car’s VIN before we ship it. This makes the installation process plug-and-play, saving you hundreds of dollars in dealership fees.
What information do you need from me?
After you complete your purchase, you will need to provide us with your 17-digit Vehicle Identification Number (VIN). We cannot ship the module until we have this information to perform the programming.
Where is the ECM located on my 2014-2016 Corvette?
On the C7 Corvette, the ECM is found on the passenger side of the vehicle, located under the cowl panel, just below the windshield.
Will this fix my car’s specific issue?
This module will correct any problems directly caused by a faulty ECM, including the common symptoms and trouble codes listed above. If your vehicle’s issue is due to a different component (like a bad sensor or wiring), replacing the ECM will not fix it. Proper diagnosis is always recommended.
Is this a genuine GM part?
Yes, this is a genuine OEM-quality Engine Control Module that meets or exceeds original factory specifications, ensuring proper function and longevity.