Is Your Buick Encore Experiencing Frustrating Engine Problems?
If your 2013-2016 Buick Encore is stalling, running rough, refusing to start, or has a persistent Check Engine Light that points to an internal module failure, you’ve likely pinpointed a faulty Engine Control Module (ECM). As the central computer for your engine, when the ECM fails, it can cause a wide range of confusing and debilitating issues, leaving your vehicle unreliable. I’ve seen this countless times in my 20+ years as a technician; a perfectly good engine can be sidelined by a single electronic component failure.
Expert Pro Tip: Before condemning your ECM, always perform a simple “wiggle test.” With the key on, gently wiggle the main wiring harness connectors at the ECM. If the engine stumbles, stalls, or warning lights flicker, you may have a poor connection or a broken wire, not a failed module. Cleaning the connector pins with a dedicated electronic cleaner can sometimes save you the cost of a new part.
The Direct Solution: A VIN-Programmed Replacement ECM
This isn’t just a replacement part; it’s a complete, ready-to-install solution. We take a genuine OEM ECM, part number 12643636, and professionally program it with the latest GM-certified software specifically for your vehicle’s VIN. This critical step ensures all systems, from the fuel injectors to the transmission, communicate correctly right out of the box. You get a reliable part that restores factory performance without the exorbitant cost and hassle of a dealership visit for programming.
Symptoms of a Failing 2013-2016 Encore Engine Module
A failing ECM can manifest in many ways. If you’re experiencing any of the following, this module is the likely solution:
- ✔ Persistent Check Engine Light (CEL) with codes for internal processor failure.
- ✔ Engine cranks but will not start.
- ✔ Unexplained stalling or intermittent cutting out while driving.
- ✔ Severe hesitation, poor acceleration, or reduced fuel economy.
- ✔ No communication with the ECM when using a diagnostic scan tool.
- ✔ Harsh or erratic automatic transmission shifting.
Plug-and-Play Installation: No Dealer Visit Required
We’ve made this repair as straightforward as possible for the DIY mechanic or professional shop. Because we handle the programming before shipping, you can get your Encore back on the road quickly.
- Safety First: Disconnect the negative terminal from your vehicle’s battery and wait 10 minutes for all systems to discharge.
- Locate the ECM: On the Buick Encore, the ECM is typically located in the engine compartment. Consult a repair manual for the exact position.
- Disconnect and Remove: Carefully unplug the wiring harness connectors. Most have a locking tab that needs to be released. Then, unbolt the old module from its mounting bracket.
- Install the New Module: Bolt your new, pre-programmed ECM into place. Securely reconnect the wiring harnesses, ensuring they click and lock into position.
- Reconnect Battery: Reattach the negative battery terminal.
- Final Steps: Your vehicle may require a security relearn procedure, which can often be done without special tools by cycling the key. Start the vehicle and let it idle to allow the computer to acclimate.
This module is a direct replacement for a wide range of original equipment part numbers, ensuring broad compatibility. It is guaranteed to interchange with the following part numbers: 12668866, 12668994, 12643636, 12663405, 12670335, 22819494, and 12692200.
Guaranteed Fitment
This Engine Control Module is verified to fit a vast array of GM vehicles. Please confirm your specific model and options below:
- Buick Encore: 2013-2016 (1.4L)
- Chevrolet Cruze: 2012-2016 (Gasoline, 1.4L, & VIN P Limited)
- Chevrolet Sonic: 2012-2016 (1.4L)
- Chevrolet Trax: 2013-2016 (1.4L)
- Chevrolet Spark: 2014-2015 (Gasoline)
- Chevrolet Volt: 2011-2015
- Cadillac ELR: 2014-2016
- Chevy Express / GMC Savana Vans (2500/3500): 2016 (4.8L, 6.0L)
- Chevy Silverado / GMC Sierra Trucks (2500/3500): 2012-2016 (6.0L)
- Chevrolet Suburban 3500: 2016