Is Your Chevy Volt Experiencing Frustrating Electrical Problems?
If you’re dealing with a persistent check engine light, erratic engine behavior, or a no-start condition in your 2011-2015 Chevrolet Volt, the Engine Control Module (ECM) is a likely culprit. As the central computer for your vehicle’s powertrain, a failing ECM can cause a cascade of issues that can be difficult to diagnose. In my 20+ years in the shop, I’ve seen how a faulty module can mimic other problems, leading to wasted time and money on unnecessary parts.
From the Shop Floor: “A customer’s 2013 Volt came in last week with intermittent ‘Service High Voltage Charging System’ warnings and poor gasoline engine performance. They were worried it was a catastrophic battery failure. After running diagnostics, all signs pointed to the battery, but my experience with these platforms suggested a deeper look. We found no faults in the high-voltage system itself. Instead, the ECM was failing to correctly process sensor data, sending false error signals. We replaced it with a properly programmed unit like this one, and all the phantom warnings and performance issues vanished. It saved the customer thousands compared to a battery replacement they didn’t need.”
The Smart Solution: A VIN-Programmed 2011-2015 Volt ECM
Don’t let a trip to the dealership for expensive programming hold up your repair. This Engine Control Module is the definitive solution, arriving at your door fully programmed to your vehicle’s specific Vehicle Identification Number (VIN). We load it with the latest, most stable software updates directly from GM. This ensures that once installed, it communicates perfectly with your Volt’s complex network of modules, restoring performance and reliability without any additional programming fees or hassles.
- โ VIN-Specific Programming: We flash the module with your car’s VIN and the newest GM software before shipping.
- โ Eliminate Guesswork: Solves common issues like false trouble codes, poor fuel economy, hesitation, and no-start conditions.
- โ True Plug-and-Play: No dealer visit is required for programming. Once installed, a security relearn procedure may be necessary, which can be done in your driveway.
- โ Broad Compatibility: This module is a direct replacement for a wide range of GM vehicles, ensuring a perfect fit and function.
Easy Installation to Get You Back on the Road
Replacing the ECM on your Volt is a straightforward process. The module is located in the left-hand (driver’s side) rear of the engine compartment. With basic tools, you can complete this job and restore your vehicle’s brainpower.
- Safety First: Disconnect the negative terminal from your 12V auxiliary battery.
- Locate the Module: Find the ECM in the rear driver’s side of the engine bay.
- Disconnect Connectors: Carefully release the locking tabs and unplug the electrical wiring harnesses from the old module. Inspect the pins for any corrosion or damage.
- Remove the Old ECM: Unbolt the module from its mounting bracket.
- Install the New ECM: Mount your new, pre-programmed module in place and securely fasten it.
- Reconnect Everything: Plug the wiring harnesses back into the new ECM until they click, and then reconnect your battery terminal.
- Perform Security Relearn: You may need to perform a simple key-cycle security relearn procedure. Instructions are readily available online or in your service manual.
Guaranteed Fitment for Your Vehicle
This ECM is the correct replacement for a variety of GM models and part numbers. Please verify your original part number against this list to ensure compatibility. This unit replaces the following part numbers:
12668866, 12668994, 12643636, 12663405, 12670335, 22819494, 12692200
It is the specified Electronic Control Module for the 2011-2015 Chevrolet Volt (gasoline engine) and many other vehicles including the Cruze, Sonic, Trax, Encore, and various GM trucks and vans. After your purchase, simply provide us with your VIN, and we’ll handle the rest, ensuring you receive a part that is ready for installation right out of the box.