Is Your Corvette LS9 Running Rough or Not Starting?
There’s nothing more frustrating than when your high-performance 2010-2013 Corvette, the pinnacle of GM engineering, is sidelined by electrical gremlins. If you’re dealing with a no-start condition, erratic engine behavior, or a dashboard lit up with warning lights, a failing Engine Control Module (ECM) is a very likely culprit. As the brain of your 6.2L LS9 engine, when the ECM falters, everything from fuel delivery to spark timing is compromised, leaving your powerhouse feeling more like a paperweight.
A Story From the Shop: A customer’s 2011 Corvette Z06 came in last month with a persistent, random misfire code that he’d been chasing for weeks. He had replaced plugs, wires, and even an ignition coil pack to no avail. After connecting my diagnostic scanner, I noticed the live data for the fuel injector on cylinder 3 was dropping out intermittently. Instead of just throwing more parts at it, we scoped the injector’s command signal directly at the ECM connector. The signal was weak and inconsistent. The issue wasn’t the injector; it was a failing driver inside the original ECM. This replacement module solved his problem instantly.
The Direct Solution: A Pre-Programmed 2010-2013 Corvette ECM
This isn’t just a replacement part; it’s a complete, ready-to-install solution. We take a genuine GM ECM, part number 12633264, and professionally program it with the latest GM-certified software updates specifically for your vehicle’s VIN. This critical step ensures that all factory parameters for your Corvette’s engine, transmission, and security systems are perfectly matched, eliminating the need for an expensive trip to the dealership for programming.
Common Symptoms of a Failing ECM:
If you’re experiencing any of the following, your ECM may be the cause:
- โ Engine will not start or is very hard to start
- โ Check Engine Light is on with multiple, often unrelated, trouble codes
- โ Poor fuel economy and loss of power
- โ Stalling, stumbling, or rough idling
- โ Communication errors with diagnostic scan tools
- โ Apparent transmission shifting problems or harsh shifts
Plug-and-Play Installation: No Dealer Visit Required
You can perform this replacement right in your own garage. Our VIN programming service makes this a true plug-and-play repair. Once you receive the module, simply follow these steps:
- Safety First: Disconnect the negative terminal from your vehicle’s battery.
- Locate the ECM: On the 2010-2013 Corvette, the ECM is located in the right-hand (passenger side) engine compartment, near the firewall.
- Disconnect Connectors: Carefully release the locking tabs and unplug the wiring harness connectors from the old module. Inspect the connectors for any signs of corrosion or damage.
- Remove Old Module: Unbolt the old ECM from its mounting bracket.
- Install New Module: Mount your new, pre-programmed ECM and securely plug in the wiring harness connectors. You should hear a ‘click’ as they lock into place.
- Reconnect Battery: Reattach the negative battery terminal. The vehicle may require a security relearn procedure, which typically involves turning the key to the ‘ON’ position for 10-15 minutes.
Guaranteed Compatibility
This Engine Control Module is a direct replacement for service numbers 12633264 and 12678513. While it is a perfect fit for the 2010-2013 Corvette with the 6.2L LS9 engine (VIN R or T), it also fits a range of other GM vehicles. Please verify your part number and specific vehicle options to ensure proper fitment. Simply provide us with your VIN upon purchase, and we’ll handle the rest, ensuring you get the correct, updated software for your exact vehicle.