Is Your Chevrolet Volt Acting Up? Let’s Get It Fixed.
If you’re dealing with a frustrating check engine light, erratic engine behavior, or a no-start condition in your 2011-2015 Chevy Volt, a failing Engine Control Module (ECM) is a very likely culprit. As the brain of your vehicle’s advanced powertrain, when the ECM falters, it can cause a cascade of confusing issues, from poor performance and decreased efficiency to complete communication breakdowns between critical systems. Don’t let a faulty module keep your innovative vehicle sidelined.
This is a direct-replacement Engine Control Module, programmed specifically for your vehicle using your VIN. We flash it with the latest, most stable software updates directly from GM, ensuring it works seamlessly with your Volt’s unique systems right out of the box. This isn’t just a part; it’s a complete, ready-to-install solution.
Why Choose Our Pre-Programmed 2011-2015 Volt ECM?
Over my 20+ years in the shop, I’ve seen countless drivers spend a fortune at dealerships for diagnostics and programming. We eliminate that step entirely. By programming the module before it ships, we save you time, money, and the headache of towing your vehicle for a simple module swap.
- โ VIN-Specific Programming: We load the exact software for your vehicle’s options and calibration, ensuring perfect function.
- โ Latest GM Updates: Your new ECM will have the most current software, addressing potential bugs and improving performance from the original factory settings.
- โ No Dealer Required: This module is ready for installation upon arrival. Simply swap the part and you’re done.
- โ Restores Performance: A healthy ECM is critical for proper engine management, fuel delivery, and communication with the hybrid drive system.
“A customer’s 2013 Volt came in last week with a persistent ‘Service High Voltage Charging System’ message and intermittent ‘Reduced Engine Power’ warnings. The codes were all over the place, pointing to communication errors with the battery energy control module and the hybrid powertrain control module. Instead of chasing ghosts, my experience pointed to the central processorโthe ECM. A failing ECM can corrupt the data bus, causing other perfectly good modules to report errors. We installed one of our pre-programmed units, and all the phantom codes vanished instantly. The car ran perfectly. It’s a classic case where the root cause isn’t what the initial codes suggest.”
Simple, Straightforward Installation
Replacing the ECM on your Volt is a manageable job for a confident DIYer. The module is located in the left-hand rear of the engine compartment.
- Safety First: Disconnect the negative terminal from your 12V battery and secure it away from the post.
- Locate the ECM: Find the module in the rear driver’s side of the engine bay.
- Disconnect Connectors: Carefully release the locking tabs and unplug the main wiring harness connectors. Never force them. Inspect the pins for any corrosion and clean with a dedicated electronics cleaner if necessary.
- Remove the Old Module: Unbolt the old ECM from its mounting bracket.
- Install the New Module: Mount your new, pre-programmed ECM and securely reconnect the wiring harnesses until they click into place.
- Reconnect Battery: Reattach the negative battery terminal. The vehicle may need to complete a security relearn procedure, which typically involves cycling the key.
Guaranteed Fitment
This module is a direct replacement for part number 12663405 and is also interchangeable with the following GM part numbers: 12668866, 12668994, 12643636, 12670335, 22819494, and 12692200. Please provide your VIN upon purchase so we can ensure flawless programming for your specific vehicle.
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 Electronic Control Module; (1.4L), ID 12643636 or 12668866
ENCORE 16 Electronic Control Module; (1.4L), VIN B (8th digit, opt LUV)
EXPRESS/SAVANA 2500/3500 VAN 16 Electronic Control Module; (LH rear engine compartment), 4.8L or 6.0L
SIERRA/SILVERADO 2500/3500 PICKUP 12-16 Electronic Control Module; (LH front engine compartment), 6.0L
SIERRA DENALI 2500/3500 12-16 Electronic Control Module; (LH front engine compartment), 6.0L
SONIC 12 Electronic Control Module; 1.4L
SONIC 13-14 Electronic Control Module; ID 12643636
SONIC 15 Electronic Control Module; ID 12643636 or 12668866
SONIC 16 Electronic Control Module
SPARK 14-15 Electronic Control Module; gasoline model
SUBURBAN 3500 16 Electronic Control Module; (LH front engine compartment)
TRAX 13-16 Electronic Control Module