Restore Peak Performance to Your GM Vehicle
If you’re dealing with a frustrating check engine light, erratic engine behavior, or a no-start condition, a failing Engine Control Module (ECM) is often the culprit. As the central computer of your vehicle, the ECM governs everything from fuel mixture and ignition timing to transmission shifting. When it fails, it can cause a cascade of problems that are difficult to diagnose. This direct-replacement ECM, part number 12672963, is the reliable solution to get your vehicle running smoothly again.
With over two decades of hands-on diagnostic experience, I’ve seen firsthand how a faulty ECM can sideline even the most well-maintained cars and trucks. That’s why we take the guesswork out of the repair. We pre-program this module to your vehicle’s specific Vehicle Identification Number (VIN) before it ships. This means it arrives loaded with the latest factory software from GM, ensuring optimal performance and compatibility right out of the box. You get a dependable fix without the expensive trip to the dealership for programming.
Common Signs of a Failing Engine Computer
- ✔ Persistent Check Engine Light (CEL) that won’t clear.
- ✔ Engine stalling, sputtering, or misfiring for no apparent reason.
- ✔ Noticeable decrease in fuel economy.
- ✔ The vehicle won’t start, but the battery and starter are good.
- ✔ Trouble codes related to internal module failure (e.g., P0601, P0606) or communication loss (U0100).
- ✔ Harsh or incorrect automatic transmission shifting.
Case Study: A Tricky Diagnosis
A customer brought in a 2015 Silverado 1500 with an intermittent stalling issue that two other shops couldn’t solve. It would run perfectly for days, then suddenly die at a stoplight. There were no consistent trouble codes, just a history of random communication faults. After ruling out fuel and ignition basics, I suspected the ECM. On a hunch, I used a heat gun to gently warm the module while the engine was idling. Within minutes, the engine stumbled and died. The ECM had developed an internal fault that was only present when it reached a certain temperature. Replacing it with a pre-programmed unit like this one solved the problem for good. This is a classic example of how a 2014-2016 Corvette ECM (and its counterparts for other models) can fail in ways that are tough to track down without experience.
A Straightforward Guide to Installation
Installing your new 2014-2016 Corvette ECM is a manageable job for a confident DIYer. While the exact location varies by model (it’s on the right-hand cowl under the dash for the Corvette), the general process is the same.
- Safety First: Always disconnect the negative terminal from your vehicle’s battery and wait a few minutes before beginning work.
- Locate the Module: Find the existing ECM. On many GM trucks and SUVs, it’s in the engine compartment on the driver’s side. On cars like the Corvette or CTS, it may be under the dash or cowl panel.
- Disconnect and Remove: Carefully unplug the electrical connectors. Most have locking tabs that need to be released. Once disconnected, unbolt the module from its mounting bracket and remove it.
- Install the New ECM: Mount the new module in the same location and securely fasten it. Reconnect the electrical connectors, ensuring they click firmly into place.
- Reconnect Power: Reattach the negative battery terminal.
- Perform Security Relearn: Your vehicle may require a simple security relearn procedure. This often involves turning the key to the ‘ON’ position for 10-15 minutes, then off, and repeating two or three times before starting the engine. Consult your vehicle’s service information for the specific procedure.
Verified Compatibility Across the GM Lineup
This module is a direct replacement for multiple part numbers and fits a wide range of GM vehicles. Please verify your part number or contact us with your VIN to confirm fitment. This unit is compatible with part numbers 12692067, 12676230, 12656993, 12662034, 12672537, 12673195, 12663391, 12672963, and 12669318.
ATS (14-16) | CAMARO (16) | CANYON (15-16) | COLORADO (15-16) | CORVETTE (14-16) | CTS (14-16) | ESCALADE & ESV (15-16) | SIERRA 1500 & DENALI (14-16) | SILVERADO 1500 (14-16) | SUBURBAN 1500 (15-16) | TAHOE (15-16) | XTS (14-16) | YUKON & YUKON XL (15-16)
Note: Specific engine and option codes may apply. The provided fitment list is a guide; VIN confirmation is the best way to ensure compatibility.
Your Purchase Process
This is a complete, ready-to-install solution. After you complete your purchase, simply send us a message with your vehicle’s 17-digit VIN. Our technicians will program the 2014-2016 Corvette ECM with the latest GM software matched perfectly to your vehicle’s configuration. It’s the most reliable way to get back on the road fast.
What information do you need to program the ECM?
What information do you need to program the ECM?
We need your vehicle’s 17-digit Vehicle Identification Number (VIN). This allows us to flash the module with the exact software and calibrations your vehicle requires for proper operation.
Is this part truly plug-and-play?
Yes, because we program it to your VIN, it eliminates the need for dealer-level programming tools. In some cases, a simple ‘Security Relearn’ procedure (done with just the ignition key) may be required after installation. This procedure is straightforward and instructions can be easily found for your model.
Will this fix my check engine light?
If the check engine light and other symptoms are being caused by a faulty ECM, then yes, this part will resolve those issues. However, it’s crucial to ensure the ECM is the actual point of failure. This part cannot fix problems related to other faulty sensors or mechanical components.
Where is the ECM located on my 2015 Corvette?
On the 2014-2016 Chevrolet Corvette, the Engine Control Module is located under the dash on the right-hand (passenger) side, near the cowl area.
Does this module have the newest software?
Absolutely. We program every module with the most current software version available from General Motors. This can often resolve drivability issues that were present even with the original factory programming.