Restore Peak Performance to Your High-Performance GM Vehicle
The Engine Control Module (ECM) is the electronic brain of your vehicle, orchestrating everything from fuel injection and ignition timing to emissions control and transmission communication. When it begins to fail in a high-performance machine like a 2010-2013 Corvette with the legendary 6.2L LS9 engine, the symptoms can be frustrating and difficult to diagnose. This replacement ECM, service part number 12633264, is the definitive solution to restore your vehicle’s factory performance, drivability, and reliability.
This isn’t just a generic part off a shelf. We provide a crucial service by programming this module specifically to your vehicle’s 17-digit Vehicle Identification Number (VIN) before it ships. This process loads the latest, most stable GM-certified software for your exact make, model, and options. This eliminates the need for expensive dealership programming, saving you time, money, and the hassle of towing your vehicle.
We had a 2011 Corvette ZR1 come into the shop with a baffling issue. The owner reported intermittent stalling at idle and the traction control light would flicker randomly during steady cruising. We checked all the usual suspects—battery, alternator, grounds, and wheel speed sensors—and everything tested perfectly. The scan tool showed no hard codes, only a history of lost communication with various modules. On a hunch, we monitored the ECM’s internal voltage and temperature data streams. We noticed the internal voltage readings were erratic, jumping up and down despite the alternator’s steady output. This pointed to an internal failure within the module’s power regulation board. Replacing the faulty unit with a properly programmed 2010-2013 Corvette ECM like this one resolved every single ghost in the machine. It’s a powerful reminder that the ECM can cause symptoms that seem completely unrelated to the engine.
Is Your GM Vehicle Exhibiting These Symptoms?
A failing ECM can manifest in numerous ways. If your vehicle is experiencing any of the following, a faulty engine computer could be the culprit:
- ✔ Persistent Check Engine Light (CEL) that won’t clear.
- ✔ Specific diagnostic trouble codes (DTCs) related to processor failure, memory errors, or sensor reference voltage.
- ✔ Engine misfires, rough idling, or stalling for no apparent reason.
- ✔ A complete no-start condition where the engine cranks but won’t fire.
- ✔ Noticeable decrease in fuel economy or engine power.
- ✔ Erratic automatic transmission shifting behavior.
- ✔ Inability for a scan tool to communicate with the engine computer.
The Importance of a VIN-Programmed 2010-2013 Corvette ECM
Modern vehicles are complex networks of computers. The ECM is the central hub, and it must have the correct software to communicate with the Body Control Module (BCM), Transmission Control Module (TCM), and anti-theft system (Pass-Key/VATS). Our VIN-specific programming ensures that when you install this module, it’s a seamless integration. It will have the correct parameters for your engine, transmission, and emissions equipment, ensuring a true plug-and-play experience. After installation, a simple security relearn procedure (instructions included) is typically all that’s needed to get you back on the road.
Broad GM Compatibility
While this is a primary component for the C6 Corvette, this versatile E38 ECM hardware was used across a wide range of powerful GM vehicles. This module, part number 12633264 (interchangeable with 12678513), is a verified fit for the following applications:
- Cadillac CTS (2010-2015): 6.2L V8 models
- Chevrolet Camaro (2012-2015): 3.6L V6 & 6.2L V8 models (verify ID 12633264)
- Chevrolet Colorado (2010-2012): 5.3L V8 models
- Chevrolet Corvette (2010-2013): 6.2L V8 models (VIN R or T, opt LS9)
- Chevrolet Malibu (2010-2012): 3.6L V6 models
- GMC Canyon (2010-2012): 5.3L V8 models
- Hummer H3 (2010): 5.3L V8 models
Please verify your original part number or consult your mechanic to ensure compatibility.
Frequently Asked Questions
Is this part truly plug-and-play?
Yes, for the most part. We program the module to your VIN, so it has the correct software. However, like any GM module replacement, you will need to perform a security relearn procedure. This is a simple process that we provide instructions for, and it does not require any special tools.
How do I provide my vehicle’s VIN?
After you complete your purchase, please send us a message with your full 17-digit Vehicle Identification Number (VIN). We cannot program and ship your ECM without this critical information.
Will this fix my car’s problem for sure?
This module will correct any issues directly caused by a faulty ECM. However, it is essential that your vehicle has been properly diagnosed. This part will not fix problems related to bad sensors, wiring, or other mechanical failures. We always recommend a professional diagnosis.
Do I need to take my car to the dealer after installation?
No. The main reason for a dealer visit is for programming, which we handle before shipping the part to you. This saves you the cost of programming and potential towing fees.
What is the difference between part numbers 12633264 and 12678513?
These are interchangeable GM service numbers that refer to the same hardware. Our module is a direct replacement for a unit bearing either of these part numbers.