2009 Corvette Engine Control Module 12639300 Programmed To Your VIN VIN ECM PCM

Is your 2009 Corvette suffering from mysterious electrical gremlins, poor engine performance, or a persistent Check Engine Light? The Engine Control Module (ECM), the brain of your vehicle’s powertrain, is often the culprit. A failing ECM can lead to a cascade of frustrating issues, from rough idling and stalling to a complete no-start condition. This direct-fit replacement Engine Control Module, part number 12639300, is the definitive solution to restore your vehicle’s performance and reliability.

Unlike generic modules that require expensive and time-consuming trips to the dealership for programming, this ECM arrives at your door fully programmed to your specific vehicle. We use your Vehicle Identification Number (VIN) to load the latest, most stable GM factory software, ensuring seamless integration and optimal performance right out of the box. This plug-and-play solution saves you time, money, and the headache of dealing with incompatible software.

Common Symptoms of a Failing 2009 Corvette ECM

If you’re experiencing any of the following issues, a faulty engine computer may be to blame. A proper diagnosis is always recommended, but these are strong indicators that your ECM needs attention:

• ✔ Check Engine Light is illuminated with communication-related trouble codes (e.g., U-codes).
• ✔ Engine misfires, stumbles, or runs rough.
• ✔ Unexplained drop in fuel economy.
• ✔ Intermittent stalling or difficulty starting the engine.
• ✔ Hesitation or lack of power during acceleration.
• ✔ Automatic transmission shifting erratically or harshly.
• ✔ Seemingly unrelated warning lights on the instrument cluster.
• ✔ Complete failure to start the engine, with no spark or fuel injector pulse.

The Core of Your Vehicle’s Performance

The ECM is a sophisticated computer that acts as the central command for your Corvette’s engine. It constantly analyzes data from dozens of sensors—like the crankshaft position, oxygen sensors, and mass airflow sensor—to make instantaneous adjustments to the fuel mixture, ignition timing, and other critical parameters. When it functions correctly, your engine runs smoothly and efficiently. When it fails, the entire system can be compromised. This replacement module is built to meet or exceed original equipment specifications, ensuring it can handle the demanding environment of your engine bay and restore the precise control your vehicle requires.

Guaranteed Compatibility and Simple Installation

This module is a direct replacement for a wide range of GM vehicles and is interchangeable with several service numbers. To ensure a perfect match, we program it specifically for your car using the VIN you provide during checkout. While the physical installation is straightforward—typically involving disconnecting the battery, unplugging the old module’s wiring harnesses, and bolting the new one in its place—some GM vehicles may require a security relearn procedure (often called a Passlock or VATS relearn). This is a simple process that can usually be done in your driveway without special tools and helps sync the new ECM with your vehicle’s anti-theft system. Instructions for this procedure are widely available online or in service manuals.

This ECM is a direct replacement for the following part numbers: 12636659, 12639300, 1263605, 12628993, 12628911, 12625453, 12622175, 12630464, and 12678512.

It is compatible with a wide array of GM models, including:

• 2009 Chevrolet Corvette (ZR1)
• 2009-2011 Cadillac DTS
• 2009-2011 Buick Lucerne (4.6L)
• 2009 Cadillac CTS (6.2L)
• 2009 Cadillac SRX (4.6L)
• 2009-2010 Cadillac STS (4.4L, 4.6L)
• 2009 Cadillac XLR
• 2009 Chevrolet Trailblazer (6.0L)
• 2009 GMC Envoy (5.3L)
• 2009 Saab 9-7x
• 2009-2012 Chevrolet Colorado
• 2009-2012 GMC Canyon
• 2009-2010 Hummer H3