Is Your Chevy Volt Running Rough or Not Starting?
The Engine Control Module (ECM), often called the brain of your vehicle, is the central command center for your 2011-2015 Chevrolet Volt’s powertrain. When it begins to fail, you can experience a host of frustrating and potentially damaging issues, from a persistent check engine light and poor fuel economy to intermittent stalling or a complete no-start condition. This isn’t just an inconvenience; it’s a critical failure that compromises your vehicle’s performance, efficiency, and reliability. Don’t let a faulty computer keep your advanced hybrid vehicle sidelined.
From the Diagnostic Bay
We had a 2013 Volt come into the shop with a baffling issue: it would randomly refuse to switch from electric to gasoline power, sometimes stalling at intersections. The owner had already replaced the battery and checked the fuel system, but the problem persisted. After running diagnostics, we found intermittent communication loss with the ECM. Instead of a costly and time-consuming diagnostic process at the dealership, we installed a VIN-programmed replacement module. The new ECM, loaded with the latest GM software, immediately restored proper communication between all systems. The Volt ran flawlessly, switching between power modes seamlessly. It’s a perfect example of how the right, correctly programmed part is the only true fix.
Why Choose Our Programmed 2011-2015 Volt ECM?
This is not just a replacement part; it’s a complete, plug-and-play solution. We take a genuine OEM module and flash it with the most current, stable software updates directly from GM, tailored specifically to your vehicle’s Vehicle Identification Number (VIN). This critical step ensures that the ECM communicates perfectly with your Volt’s other complex systems, including the anti-theft system (immobilizer), transmission controller, and hybrid battery management system. By providing us with your VIN upon purchase, you eliminate the need for expensive dealership programming or specialized tools. You receive a module that is ready for installation right out of the box.
Common Symptoms of a Failing ECM
- ✔ Persistent Check Engine Light (CEL) with codes related to module communication or sensor circuits.
- ✔ Engine stalling, stumbling, or hesitating during acceleration.
- ✔ Complete no-start or hard-starting condition.
- ✔ Noticeable decrease in fuel efficiency.
- ✔ Problems with the automatic transmission shifting erratically.
- ✔ Failure to pass state emissions testing.
- ✔ Unexplained warning lights on the dashboard.
Direct-Fit Replacement & Wide Compatibility
This module is a direct replacement for a wide range of GM vehicles, ensuring OEM quality and fitment. It is compatible with multiple original part numbers, making it a versatile solution for many popular models. Please verify your part number or consult the fitment list below. This specific 2011-2015 Volt ECM is guaranteed to restore your vehicle’s factory performance and operational integrity.
Replaces Part Numbers: 12668866, 12668994, 12643636, 12663405, 12670335, 22819494, 12692200
This part will fit these makes and models with these options:
VOLT 11-15 Electronic Control Module; gasoline, (LH rear engine compartment)
CRUZE 12-14 Electronic Control Module; 1.4L
CRUZE 15 Electronic Control Module; gasoline, ID 12643636 or 12668866
CRUZE 16 Electronic Control Module; VIN P (4th digit, Limited)
ELR 14-16 Electronic Control Module; gasoline, (LH rear engine compartment)
ENCORE 13-14 Electronic Control Module; (1.4L)
ENCORE 15-16 Electronic Control Module; (1.4L)
EXPRESS/SAVANA VANS 16 Electronic Control Module; 4.8L or 6.0L
SIERRA/SILVERADO 2500/3500 12-16 Electronic Control Module; 6.0L
SONIC 12-16 Electronic Control Module; 1.4L
SPARK 14-15 Electronic Control Module; gasoline model
SUBURBAN 3500 16 Electronic Control Module
TRAX 13-16 Electronic Control Module; 1.4L
And more. Please verify your part number.
Frequently Asked Questions
What is an ECM and what does it do in my Chevy Volt?
The ECM, or Engine Control Module, is a powerful computer that controls all aspects of your Volt’s gasoline engine. It manages fuel injection, ignition timing, emissions systems, and works in concert with the hybrid control modules to ensure seamless operation and maximum efficiency. A functioning ECM is essential for your vehicle to run correctly.
Is this ECM ready to install out of the box?
Yes! This is the key benefit of our service. Once you provide your vehicle’s VIN, we program the module with the latest GM software specific to your car. This means no additional programming is required. In most cases, a simple security relearn procedure may be necessary, which can be done without special tools. We provide instructions for this.
Why do you need my VIN?
Your Vehicle Identification Number (VIN) contains critical information about your car’s specific options, engine, transmission, and security systems. Programming the ECM to your VIN ensures it works perfectly with all the other modules in your vehicle, preventing compatibility issues and error codes.
Will this fix my check engine light?
If the check engine light is on due to a faulty ECM, then yes, this part will resolve the issue. However, it is crucial to properly diagnose the vehicle first. Other issues, such as a bad sensor or wiring problem, can also cause a check engine light. This module will fix codes specifically related to internal ECM failure or communication errors.
What other part numbers does this module replace?
This module is a direct replacement for several part numbers, including 12668866, 12668994, 12643636, 12670335, 22819494, and 12692200. If your original module has one of these numbers, this part is a guaranteed fit.