Replace the wiper blades by lifting the arms, removing the old blades, installing new ones of the correct size and adapter, then testing the sweep. On the Encore, the driver’s blade is typically 24 inches and the passenger side about 18 inches, and you’ll usually use a standard GM J-hook adapter.
What you’ll need
Before you start, gather the replacement blades and any adapters that fit your Encore’s wiper arms. Having the right sizes and connectors on hand makes the swap quick and clean.
- Two replacement wiper blades sized for your Encore (typical: 24" driver, 18" passenger; verify on your vehicle or in the owner’s manual)
- Adapters compatible with your wiper arm style (GM/J-hook are common)
- Optional: microfiber cloth for cleaning the blades and windshield
With the right blades and adapters ready, you can proceed to remove the old blades and install the new ones.
Steps to replace the blades
Follow these steps in order to replace the blades safely and effectively.
- Park on a level surface, turn the ignition off, and lift each wiper arm away from the windshield so the blade is vertical and free from the glass.
- Remove the old blade from the arm. Depending on the connector, you may need to press a release tab on the blade adapter and slide the blade out, or rotate/slide the blade off a J-hook or pin-style connector. Note how the blade is attached to mirror the setup with the new blade.
- Prepare the new blade by attaching the correct adapter if it isn’t already integrated. Align the adapter with the wiper arm and slide the blade onto the arm until you hear a click, indicating it’s secured. Ensure the blade sits flush against the windshield.
- Lower the wiper arm back onto the windshield gently. Repeat the process for the other side if needed (driver side is typically longer than the passenger side).
- Test the new blades. With the ignition on or in the required position, turn on the wipers to confirm they sweep cleanly without chatter or skipping. If necessary, wipe the blades with a microfiber cloth and re-test.
If a blade doesn’t seat properly or you hear interference, stop and recheck the adapter and alignment before continuing to avoid damage.
Connector types and blade sizing tips
Most 2018 Buick Encores use a GM J-hook connector on the driver side and a compatible adapter on the passenger side. Blade sizes are commonly 24 inches (driver) and 18 inches (passenger); verify on your vehicle or in the manual, as some trims or markets may vary.
Maintenance and troubleshooting
Regular care helps extend blade life and keep visibility high in bad weather. Clean the blades periodically, avoid using blades on dry glass, and replace them at the first sign of streaking, skipping, or missing sections.
Summary
Changing the wiper blades on a 2018 Buick Encore is a quick, practical maintenance task. Use two correctly sized blades (roughly 24" driver and 18" passenger) with the appropriate adapters, detach the old blades by releasing their connectors, attach and secure the new blades, then test the sweep. Regular inspection and timely replacement will maintain clear visibility in rain and snow.