Is Your Corvette Stalling, Running Rough, or Refusing to Start?
There’s nothing more frustrating than when the heart of your high-performance machine, the Engine Control Module (ECM), starts to fail. If you’re dealing with a persistent check engine light, erratic engine behavior, or a complete no-start situation, a faulty ECM is often the culprit. Over my 20+ years in the bay, I’ve seen how a failing computer can mimic a dozen other problems, leading to wasted time and money on unnecessary parts. This isn’t just a component; it’s the brain of your engine, and when it’s not right, nothing is.
“A customer’s 2009 Corvette ZR1 came into my shop last month with intermittent stalling and a slew of random communication codes (U-codes). He had already replaced the throttle body and MAF sensor with no luck. After running diagnostics, we traced the issue to an internal fault in the ECM’s 5-volt reference circuit. We installed one of these VIN-programmed modules, performed the security relearn, and the car has been running flawlessly ever since. It saved him a tow to the dealer and hundreds in diagnostic fees.”
The Direct Solution: A 2009 Corvette ECM Programmed for Your Vehicle
This isn’t just a replacement part; it’s a complete, ready-to-install solution. We take a genuine OEM Engine Control Module and flash it with the latest GM-certified software specifically for your vehicle’s Vehicle Identification Number (VIN). This critical step ensures that all systemsโfrom the fuel injectors and ignition timing to the transmission and security systemโcommunicate perfectly, just as the factory intended. You get a reliable part that restores your vehicle’s original performance and drivability without the hassle and expense of a dealership visit for programming.
Key Symptoms This Module Corrects:
- โ Engine stalling or cutting out while driving
- โ Complete no-start condition with power to all other systems
- โ Multiple, unrelated diagnostic trouble codes (DTCs)
- โ Poor fuel economy and reduced engine power
- โ Harsh or incorrect transmission shifting
- โ Check engine light that won’t clear
Simple, Straightforward Installation
We’ve designed this to be as simple as possible for the DIY mechanic or professional technician. By programming the module before we ship, we eliminate the most complex step of the repair.
- Safety First: Disconnect the negative terminal from your vehicle’s battery.
- Locate the ECM: On the 2009 Corvette, the ECM is located in the right-hand (passenger side) front engine compartment.
- Disconnect Connectors: Carefully release the locking tabs and unplug the wiring harness connectors from the old module.
- Swap the Module: Unbolt the old ECM and mount the new module in its place.
- Reconnect: Securely plug the wiring harnesses into the new ECM. Ensure they click into place. Reconnect the battery terminal.
- Perform Security Relearn: In most cases, you will need to perform a simple security relearn procedure. This typically involves turning the key to the ‘ON’ position for 10-15 minutes, then off, and repeating two more times. This allows the new ECM to sync with your vehicle’s anti-theft system.
Guaranteed Fitment and Compatibility
This module is a direct replacement for a wide range of GM vehicles. Please verify that your original part number is on this list or that your vehicle is listed below to ensure a perfect match.
Replaces Part Numbers: 12636659, 12639300, 1263605, 12628993, 12628911, 12625453, 12622175, 12630464, 12678512
Fits Select Models Including:
- 2009 Corvette (ZR1)
- 2009 Cadillac CTS (6.2L)
- 2009-2011 Cadillac DTS / STS / SRX (4.6L)
- 2009 Trailblazer (6.0L)
- 2009-2010 Hummer H3
- 2009-2012 Colorado / Canyon
- …and many more. Please check the full fitment list.
IMPORTANT: Please provide your vehicle’s 17-digit VIN at checkout. We cannot ship your order until we have this information to program your module correctly.