Restore Peak Performance to Your 2009 Corvette
The Engine Control Module (ECM), often called the engine computer, is the electronic brain of your 2009 Corvette. It meticulously manages everything from fuel injection and ignition timing to emissions systems and transmission shifting. When the ECM begins to fail, it can cause a cascade of frustrating and difficult-to-diagnose problems, leaving your high-performance machine running poorly or not at all. This replacement Engine Control Module, part number 12636659, is the definitive solution to restore your vehicle’s factory performance, reliability, and drivability.
Unlike a generic part from a local store, this ECM is a complete, ready-to-install solution. The most significant benefit is our professional VIN programming service. Before we ship the module, our technicians will flash it with the latest official GM software updates specific to your Corvette’s Vehicle Identification Number (VIN). This critical step ensures that the computer is perfectly matched to your vehicle’s specific configuration, options, and security systems, eliminating the need for an expensive and time-consuming trip to the dealership for programming.
From the Diagnostic Bay
We recently had a 2009 Corvette ZR1 in the shop with a complaint of intermittent stalling and a flurry of random communication error codes (U-codes). The owner had spent weeks chasing ghosts, replacing sensors and checking wiring harnesses to no avail. After connecting our diagnostic tools, we noticed the ECM would periodically drop off the vehicle’s communication network. This pointed to an internal failure in the module itself. We installed a VIN-programmed 2009 Corvette ECM just like this one, and the car immediately came back to life. All the ghost codes vanished, and the stalling issue was completely resolved. It’s a powerful reminder that for complex electrical issues, the central computer is often the root cause.
Common Symptoms of a Failing ECM
If you’re experiencing any of the following issues, a faulty engine computer could be the culprit. A failing module can often mimic other problems, making diagnosis tricky. Replacing your 2009 Corvette ECM can be the key to resolving these persistent issues.
- ✔ Check Engine Light is on or flashing with various trouble codes.
- ✔ Engine cranks but refuses to start.
- ✔ Rough idling, stalling, or hesitation during acceleration.
- ✔ Noticeable decrease in fuel economy.
- ✔ Poor engine performance and lack of power.
- ✔ Automatic transmission shifting erratically or harshly.
- ✔ Communication errors when using a diagnostic scan tool.
- ✔ Intermittent electrical problems that seem to have no cause.
Why Choose a Pre-Programmed 2009 Corvette ECM?
The key to a successful ECM replacement is the programming. An unprogrammed module simply will not work. Our service saves you hundreds of dollars in dealership labor and towing fees. By providing us with your VIN during checkout, you receive a module that is truly plug-and-play. The internal software will recognize your vehicle’s security system (Pass-Key/VATS), transmission type, and all factory options, ensuring a seamless integration and immediate restoration of function. This module is a direct replacement for a variety of GM service numbers, ensuring broad compatibility.
Interchangeable Part Numbers:
This module is a direct replacement for the following GM service numbers: 12636659, 12639300, 1263605, 12628993, 12628911, 12625453, 12622175, 12630464, and 12678512.
Guaranteed Fitment For:
While this is the primary module for the 2009 Corvette, it also fits a wide range of other GM vehicles. Please verify your part number. This part fits:
- CORVETTE 09 Electronic Control Module; (RH engine compartment), ZR1
- CADILLAC CTS 09 Electronic Control Module; (RH front engine compartment), 6.2L
- CADILLAC DTS 09-11 Electronic Control Module
- CADILLAC SRX 09 Electronic Control Module; (LH engine compartment), (4.6L)
- CADILLAC STS 09-10 Electronic Control Module; (LH frame rail), 4.4L or 4.6L
- CADILLAC XLR 09 Electronic Control Module; (RH front engine compartment)
- CHEVROLET COLORADO 09-12 Electronic Control Module; (RH firewall)
- CHEVROLET TRAILBLAZER 09 Electronic Control Module; (LH engine), 6.0L
- GMC CANYON 09-12 Electronic Control Module; (RH firewall)
- GMC ENVOY 09 Electronic Control Module; (LH engine), 5.3L
- HUMMER H3 09-10 Electronic Control Module; (RH firewall)
- BUICK LUCERNE 09-11 Electronic Control Module; (lower part of air cleaner box), 4.6L
- SAAB 9-7X 09 Electronic Control Module; (LH engine)
Frequently Asked Questions
Do I need to have this ECM programmed by a dealer?
No. We handle all the programming for you before shipment. Simply provide your vehicle’s VIN at checkout, and the module will arrive ready to install, saving you a trip to the dealership.
What is a VIN and why do you need it?
The VIN is your vehicle’s unique 17-digit identification number. We use it to load the exact, correct GM software for your car’s specific engine, transmission, and options, ensuring perfect compatibility.
Is this installation difficult?
For a 2009 Corvette, the ECM is located in the engine compartment on the right-hand side. Installation is straightforward for someone with basic mechanical skills. It involves disconnecting the battery, unplugging the electrical connectors, and unbolting the old module to swap in the new one. A security relearn procedure may be required, which is a simple process you can do at home.
How do I know if this is the correct part for my car?
The best way is to match the service number from your existing ECM to one of the interchangeable numbers listed, such as 12636659. You can also use the fitment list provided or contact us with your VIN, and we can verify compatibility for you.
What happens if I provide the wrong VIN?
Providing the correct VIN is critical. An incorrect VIN will result in the wrong software being loaded, and the module will not work in your vehicle. Please double-check the VIN from your driver’s side door jamb or dashboard before submitting your order.